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Schempp-Hirth Flugzeugbau ARCUS M Flight Manual
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Schempp-Hirth Flugzeugbau ARCUS M Flight Manual

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SCHEMPP-HIRTH FLUGZEUGBAU GmbH., KIRCHHEIM/TECK
Model:
Serial-No.:
Registr.-No.:
Date of issue:
Pages as indicated by „appr." are approved by
This powered sailplane is to be operated in compliance with information and limitations
contained herein.
Approval of translation has been done by best knowledge and judgement.
In any case the original text in German language is authoritative.
P R O V I S I O N A L
FLIGHT MANUAL
for Powered Sailplane
A R C U S
O c t o b e r
M
2 0 1 1

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  • Page 1 SCHEMPP-HIRTH FLUGZEUGBAU GmbH., KIRCHHEIM/TECK P R O V I S I O N A L FLIGHT MANUAL for Powered Sailplane A R C U S Model: Serial-No.: Registr.-No.: O c t o b e r 2 0 1 1 Date of issue: Pages as indicated by „appr.“...
  • Page 2 SCHEMPP-HIRTH FLUGZEUGBAU GmbH., KIRCHHEIM/TECK Arcus M FLIGHT MANUAL Record of revisions Any revisions of the present manual, except actual weighing data, must be recorded in the following table and in the case of approved sections be en- dorsed by the responsible airworthiness authority.
  • Page 3 SCHEMPP-HIRTH FLUGZEUGBAU GmbH., KIRCHHEIM/TECK Arcus M FLUGHANDBUCH / FLIGHT MANUAL 0.1 Erfassung der Berichtigungen / Records of revisions Lfd. Nr. Datum Datum der Datum der Zeichen Anerkennung Ein- /Unter- Berichtigung Abschnitt Seiten Berichtigung Bezug arbeitung schrift Revision Affected Affected Date of...
  • Page 4 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Arcus M FLUGHANDBUCH / FLIGHT MANUAL Verzeichnis der Seiten / List of affected pages Abschnitt Seite Ausgabe-Datum Bezug Affected section Affected pages Date of issue Reference 0.1.1 0.1.2 0.2.1 0.2.2 0.2.3 0.2.4 0.2.5 0.2.6 0.2.7 0.2.8 0.3.1...
  • Page 5 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Arcus M FLUGHANDBUCH / FLIGHT MANUAL Verzeichnis der Seiten / List of affected pages Abschnitt Seite Ausgabe-Datum Bezug Affected section Affected pages Date of issue Reference 1.1.1 Oktober 2011 1.1.2 Oktober 2011 Oktober 2011 Oktober 2011 1.4.1...
  • Page 6 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Arcus M FLUGHANDBUCH / FLIGHT MANUAL Verzeichnis der Seiten / List of affected pages Abschnitt Seite Ausgabe-Datum Bezug Affected section Affected pages Date of issue Reference 3.1.1 Oktober 2011 3.1.2 Oktober 2011 Oktober 2011 anerk. Oktober 2011 anerk.
  • Page 7 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Arcus M FLUGHANDBUCH / FLIGHT MANUAL Verzeichnis der Seiten / List of affected pages Abschnitt Seite Ausgabe-Datum Bezug Affected section Affected pages Date of issue Reference 4.5.1.1 Oktober 2011 anerk. 4.5.1.2 Oktober 2011 anerk. 4.5.1.3 Oktober 2011 anerk.
  • Page 8 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Arcus M FLUGHANDBUCH / FLIGHT MANUAL Verzeichnis der Seiten / List of affected pages Abschnitt Seite Ausgabe-Datum Bezug Affected section Affected pages Date of issue Reference 5.1.1 Oktober 2011 5.1.2 Oktober 2011 5.2.1 Oktober 2011 anerk.
  • Page 9 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Arcus M FLUGHANDBUCH / FLIGHT MANUAL Verzeichnis der Seiten / List of affected pages Abschnitt Seite Ausgabe-Datum Bezug Affected section Affected pages Date of issue Reference 7.1.1 Oktober 2011 7.1.2 Oktober 2011 7.2.1 Oktober 2011 7.2.2 Oktober 2011 7.2.3...
  • Page 10 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Arcus M FLUGHANDBUCH / FLIGHT MANUAL Verzeichnis der Seiten / List of affected pages Abschnitt Seite Ausgabe-Datum Bezug Affected section Affected pages Date of issue Reference Oktober 2011 Oktober 2011 Oktober 2011 Oktober 2011 Oktober 2011 7.9.1...
  • Page 11 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Arcus M FLUGHANDBUCH / FLIGHT MANUAL Verzeichnis der Seiten / List of affected pages Abschnitt Seite Ausgabe-Datum Bezug Affected section Affected pages Date of issue Reference 8.1.1 Oktober 2011 8.1.2 Oktober 2011 8.2.1 Oktober 2011 8.2.2...

  • Page 12: Table Of Contents

    SCHEMPP-HIRTH FLUGZEUGBAU GmbH., KIRCHHEIM/TECK Arcus M FLIGHT MANUAL Table of contents Section General (a non-approved section) Limitations (an approved section) Emergency procedures (an approved section) Normal procedures (an approved section) Performance (a partly approved section) Weight & balance (a non-approved section)

  • Page 13: General

    SCHEMPP-HIRTH FLUGZEUGBAU GmbH., KIRCHHEIM/TECK Arcus M FLIGHT MANUAL Section 1 General Introduction Certification basis Warnings, cautions and notes Descriptive data Three-side view October 2011 Revision -- 1.1.1...
  • Page 14 SCHEMPP-HIRTH FLUGZEUGBAU GmbH., KIRCHHEIM/TECK Arcus M FLIGHT MANUAL Introduction The Flight Manual for this powered sailplane has been prepared to provide pilots and instructors with information for the safe and efficient operation of the "Arcus M". This manual includes the material required to be furnished to the pilot by CS 22.
  • Page 15 SCHEMPP-HIRTH FLUGZEUGBAU GmbH., KIRCHHEIM/TECK Arcus M FLIGHT MANUAL Certification basis This self launching powered sailplane, model designation A r c u s M has been approved by the EASA in compliance with “CS 22", effective on November 14 , 2003.
  • Page 16 SCHEMPP-HIRTH FLUGZEUGBAU GmbH., KIRCHHEIM/TECK Arcus M FLIGHT MANUAL Warnings, cautions and notes The following definitions apply to warnings, cautions and notes used in this Flight Manual: "WARNING" means that the non-observation of the corresponding procedure leads to an immediate or important degradation of the flight safety "CAUTION"...
  • Page 17 Optionally a water ballast trim tank with a capacity of 11 Litres (2.9 US Gal., 2.4 IMP Gal.) is provided in the fin. Controls All controls are automatically hooked up when the Arcus M is rigged. October 2011 Revision --...
  • Page 18 The fuel level in the control unit is displayed in LITERS. In its appearance the “Arcus M” differs from the model “Arcus T” only by having longer doors covering the engine compartment.
  • Page 19 SCHEMPP-HIRTH FLUGZEUGBAU GmbH., KIRCHHEIM/TECK Arcus M FLIGHT MANUAL TECHNICAL DATA Wing Span 20.00 m 65.62 ft Area 15.59 m² 167.81 ft² Aspect ratio 25.7 0.824 m 2.70 ft Fuselage Length 8.73 m 28.64 ft Width 0.71 m 2.33 ft Height 1.00 m...
  • Page 20 SCHEMPP-HIRTH FLUGZEUGBAU GmbH., KIRCHHEIM/TECK Arcus M FLIGHT MANUAL 1.5 Three-side view October 2011 Revision --...

  • Page 21: Limitations

    SCHEMPP-HIRTH FLUGZEUGBAU GmbH., KIRCHHEIM/TECK Arcus M FLIGHT MANUAL Section 2 Limitations Introduction Airspeed Airspeed indicator markings Power plant, fuel and oil Power plant instrument markings Weights (masses) Center of gravity Approved maneuvers Maneuvering load factors 2.10 Flight crew 2.11 Kinds of operation 2.12...
  • Page 22 SCHEMPP-HIRTH FLUGZEUGBAU GmbH., KIRCHHEIM/TECK Arcus M FLIGHT MANUAL Introduction Section 2 includes operating limitations, instrument markings and basic placards necessary for safely operating the powered sailplane, its standard systems and standard equipment. The limitations included in this section and in section 9 have been approved by EASA.
  • Page 23 SCHEMPP-HIRTH FLUGZEUGBAU GmbH., KIRCHHEIM/TECK Arcus M FLIGHT MANUAL Airspeed Airspeed limitations and their operational significance are shown below: SPEED (IAS) REMARKS Never exceed speed in calm air. 280 km/h Do not exceed this speed in any Flaps set at 151 kts operation and do not use more "0", "-1", "-2"...
  • Page 24 SCHEMPP-HIRTH FLUGZEUGBAU GmbH., KIRCHHEIM/TECK Arcus M FLIGHT MANUAL Airspeed (ctd.) Speed (IAS) Remarks Maximum speed with 180 km/h Do not exceed this speed with propeller extended 97 kt propeller extended 112 mph Maximum speed for 120 km/h extending / retracting...
  • Page 25 SCHEMPP-HIRTH FLUGZEUGBAU GmbH., KIRCHHEIM/TECK Arcus M FLIGHT MANUAL 2.3 Airspeed indicator markings Airspeed indicator markings and their colour code significance are shown below: MARKING VALUE OR RANGE SIGNIFICANCE (IAS) - 180 km/h Positive flap operating range White arc (lower limit is the speed 1.1V...
  • Page 26 SCHEMPP-HIRTH FLUGZEUGBAU GmbH., KIRCHHEIM/TECK Arcus M FLIGHT MANUAL Power plant, fuel and oil Engine manufacturer: Solo Kleinmotoren GmbH. D-71050 Sindelfingen, Germany Engine model: SOLO 2625-02i Take-off power at 6600 RPM (MSL, ISA): 50 kW (68 HP) Max. continuous power at 6700 RPM:...
  • Page 27 SCHEMPP-HIRTH FLUGZEUGBAU GmbH., KIRCHHEIM/TECK Arcus M FLIGHT MANUAL Power plant instrument markings Power plant instrument markings and their colour code significant are shown below: Caution Maximum Instrument Normal Range Range Limit Signal green yellow Tachometer RPM-Indicator *) 6700 - min...
  • Page 28 SCHEMPP-HIRTH FLUGZEUGBAU GmbH., KIRCHHEIM/TECK Arcus M FLIGHT MANUAL Weights (masses) Maximum permitted take-off weight (mass): 800 kg (1764 lb) Maximum permitted landing weight (mass): 800 kg (1764 lb) Maximum permitted take-off and landing weight (mass) w i t h o u t...
  • Page 29 SCHEMPP-HIRTH FLUGZEUGBAU GmbH., KIRCHHEIM/TECK Arcus M FLIGHT MANUAL Centre of gravity Centre of gravity in flight Aircraft attitude: Tail raised up such that a wedge-shaped block, 100 : 4.5, placed on the rear top fuse- lage, is horizontal along its upper edge...
  • Page 30 SCHEMPP-HIRTH FLUGZEUGBAU GmbH., KIRCHHEIM/TECK Arcus M FLIGHT MANUAL Approved manoeuvres The powered sailplane model Arcus M is certified in category U T I L I T Y, (self-launching) The following aerobatic manoeuvres are only permitted „ without wing water ballast, „...
  • Page 31 SCHEMPP-HIRTH FLUGZEUGBAU GmbH., KIRCHHEIM/TECK Arcus M FLIGHT MANUAL Manoeuvring load factors The following manoeuvring load factors must not be exceeded: With airbrakes locked and at V = 180 km/h, 97 kts, 112 mph = + 5.3 - 2.65 With airbrakes locked and at V = 280 km/h, 151 kts, 174 mph = + 4.0...
  • Page 32 See also section 6.2: “Weight and Balance Record / Permitted Payload Range”. When flown with two pilots, the Arcus M can be operated from the rear seat as Pilot in command in compliance with the following requirements: „...
  • Page 33 SCHEMPP-HIRTH FLUGZEUGBAU GmbH., KIRCHHEIM/TECK Arcus M FLIGHT MANUAL 2.11 Kinds of operation With the prescribed minimum equipment installed (see page 2.12), the “Arcus M” is approved for VFR-flying in daytime October 2011 Revision -- appr. 2.11...
  • Page 34 SCHEMPP-HIRTH FLUGZEUGBAU GmbH., KIRCHHEIM/TECK Arcus M FLIGHT MANUAL 2.12 Minimum equipment Instruments and other basic equipment must be of an approved type and should be selected from the list in the Maintenance Manual. Normal operations Airspeed indicator (range up to 300 km/h, 162 kts, 186 mph) with colour markings according to page 2.3...
  • Page 35 SCHEMPP-HIRTH FLUGZEUGBAU GmbH., KIRCHHEIM/TECK Arcus M FLIGHT MANUAL Cloud flying only permissible „ without wing water ballast „ up to a maximum all-up mass of 690 kg (1521 lb) In addition to the minimum equipment listed under a) the following is required: Turn &...
  • Page 36 SCHEMPP-HIRTH FLUGZEUGBAU GmbH., KIRCHHEIM/TECK Arcus M FLIGHT MANUAL 2.13 Aerotow and winch launch Aerotow (propeller retracted) Only permissible on the nose tow release and with retracted propeller! Maximum towing speed: 180 km/h (97 kts, 112 mph) Weak link in tow rope: max.
  • Page 37 SCHEMPP-HIRTH FLUGZEUGBAU GmbH., KIRCHHEIM/TECK Arcus M FLIGHT MANUAL 2.14 Other limitations Below 2°C outside temperature no water ballast may be used! Inspection program for the extension of the service time 1. Service Limits When the sailplane (or the powered sailplane) has reached a service time of 6000 hours, an inspection must be done in accordance with the inspection program mentioned under chapter 3.
  • Page 38 LOAD min. max. min. max. Note: 115* 115* the seats of this "Arcus M" (to which this manual front seat load 154* 254* 154* 254* Further placards are shown in the Maintenance Manual. refers) may differ from these typical weights, the...
  • Page 39 SCHEMPP-HIRTH FLUGZEUGBAU GmbH., KIRCHHEIM/TECK Arcus M FLIGHT MANUAL Section 3 Emergency procedures Introduction Canopy jettisoning Bailing out Stall recovery Spin recovery Spiral dive recovery Engine failure (carburettor icing) Fire Other emergencies October 2011 Revision -- 3.1.1...

  • Page 40: Emergency Procedures (An Approved Section)

    SCHEMPP-HIRTH FLUGZEUGBAU GmbH., KIRCHHEIM/TECK Arcus M FLIGHT MANUAL Emergency procedures Introduction Section 3 provides check lists and amplifies procedures for coping with emergencies that may occur. Emergency situations can be minimized by proper pre-flight inspections and maintenance. October 2011 Revision --...
  • Page 41 SCHEMPP-HIRTH FLUGZEUGBAU GmbH., KIRCHHEIM/TECK Arcus M FLIGHT MANUAL Jettisoning the canopy The canopy is to be jettisoned as follows: Swing b a c k one of the red locking levers provided on the left side of the canopy frame up to the stop (approx. 90°) and swing canopy sideways fully open.
  • Page 42 SCHEMPP-HIRTH FLUGZEUGBAU GmbH., KIRCHHEIM/TECK Arcus M FLIGHT MANUAL Bailing out If possible, first stop the engine (iginition off) and retract propeller (manual control switch "Retraction" resp. press emergency system switch DOWN). Then jettison canopy (see section 3.2) and release harness.
  • Page 43 SCHEMPP-HIRTH FLUGZEUGBAU GmbH., KIRCHHEIM/TECK Arcus M FLIGHT MANUAL Stall recovery Propeller retracted When stalling during straight and level fight or in a banked turn, normal flying attitude is regained by firmly easing the control stick forward and, if necessary, applying opposite rudder and aileron.
  • Page 44 With the center of gravity in the foremost position, a steady spinning motion is not possible. The Arcus M stops rotating after a half to a full turn and usually ends in a spiral dive. In a spiral dive the sailplane accelerates very rapidly. Therefore a spiral dive should be ended immediately.
  • Page 45 SCHEMPP-HIRTH FLUGZEUGBAU GmbH., KIRCHHEIM/TECK Arcus M FLIGHT MANUAL Spiral dive recovery Depending on the use of the controls, a spin may turn into a spiral dive if the centre of gravity is in forward positions. This is indicated by a rapid increase in speed and acceleration.
  • Page 46 SCHEMPP-HIRTH FLUGZEUGBAU GmbH., KIRCHHEIM/TECK Arcus M FLIGHT MANUAL Engine failure Engine failure on take-off Ease the control stick forward immediately to obtain sufficient airspeed. Ignition OFF. Should the engine fail on take-off from a runway of sufficient length, land straight ahead.

  • Page 47: Performance

    SCHEMPP-HIRTH FLUGZEUGBAU GmbH., KIRCHHEIM/TECK Arcus M FLIGHT MANUAL Engine failure in flight Should the engine fail in flight, check „ fuel quantity „ fuel shut-off valve (OPEN?) Should it be impossible to restart the engine, land with the propeller retracted.
  • Page 48 SCHEMPP-HIRTH FLUGZEUGBAU GmbH., KIRCHHEIM/TECK Arcus M FLIGHT MANUAL Extending / Retracting the propeller in spite of a defective electronic control unit The emergency extension/retraction switch is accessible by tilting up its red guard (located at the base of the front instrument panel).
  • Page 49 SCHEMPP-HIRTH FLUGZEUGBAU GmbH., KIRCHHEIM/TECK Arcus M FLIGHT MANUAL Starting the engine despite a flat batteries (via the optional ground service receptacle) Plug in special starting cable into the receptacle provided below the aft seat on the left hand side. Clamp negative ground strap to proper terminal of an external 12 V power source, then clamp power strap to positive terminal.
  • Page 50 SCHEMPP-HIRTH FLUGZEUGBAU GmbH., KIRCHHEIM/TECK Arcus M FLIGHT MANUAL Fire „ CLOSE fuel shut-off valve „ Open throttle fully „ If the engine stops: master switch at “OFF” „ Leave propeller in extended position This sequence should be followed – if possible –...
  • Page 51 SCHEMPP-HIRTH FLUGZEUGBAU GmbH., KIRCHHEIM/TECK Arcus M FLIGHT MANUAL Other emergencies Flying with uneven water ballast If, on dumping water ballast, the wing tanks are emptying unevenly or on one side only - which is recognized at lower speeds by having to apply opposite aileron for normal flying attitude -entering a stall must be avoided.
  • Page 52 SCHEMPP-HIRTH FLUGZEUGBAU GmbH., KIRCHHEIM/TECK Arcus M FLIGHT MANUAL Emergency landing with retracted undercarriage An emergency landing with the main wheel retracted is on principle not recommended, because the potential energy absorption of the landing gear is many times higher as compared to the fuselage shell.
  • Page 53 SCHEMPP-HIRTH FLUGZEUGBAU GmbH., KIRCHHEIM/TECK Arcus M FLIGHT MANUAL Section 4 Normal operating procedures Introduction Assembly 4.2.1 Rigging and de-rigging 4.2.2 Refuelling 4.2.3 Power plant, removal and reinstallation Inspections a) Daily inspection b) Inspection after reinstalling the power plant Pre-flight inspection Normal procedures and recommended speed 4.5.1...
  • Page 54 SCHEMPP-HIRTH FLUGZEUGBAU GmbH., KIRCHHEIM/TECK Arcus M FLIGHT MANUAL Normal operating procedures Introduction Normal procedures associated with optional equipment are found in section 9. This section provides checklists and amplified procedures for conducting the daily and pre-flight inspection. Furthermore this section includes normal operating procedures and recommended speeds.
  • Page 55 FLIGHT MANUAL 4.2.1 Rigging and de-rigging Rigging The Arcus M can be rigged by two people if a wing stand or trestle is used under one wing tip. Prior to rigging, all pins and their corresponding bearings on fuselage, wing panels and tailplane should be cleaned and greased.
  • Page 56 SCHEMPP-HIRTH FLUGZEUGBAU GmbH., KIRCHHEIM/TECK Arcus M FLIGHT MANUAL Wing tip extensions (outboard. panels) Insert the spar of the wing tip extension – with locking pin pushed down and aileron deflected upwards – into the spar tunnel of the corresponding inboard wing panel.
  • Page 57 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Arcus M FLIGHT MANUAL De-rigging Remove sealing tape from wing panels and tailplane, disconnect fuel line and vent line of wing tank(s). Draining fuel from wing tank(s): Connect fuel hose to the wing tank(s). Raise respective wing and empty wing tank(s) into a separate canister.
  • Page 58 FLIGHT MANUAL 4.2.2 Refueling The Arcus M is equipped with a rigid fuselage tank and optional with up to two flexible wing tanks. The electrical fuel pump installed to the fuselage allows the fuelling of the fuselage tank with the aid of a fuel hose equipped with a quick-disconnect coupling.
  • Page 59 SCHEMPP-HIRTH FLUGZEUGBAU GmbH., KIRCHHEIM/TECK Arcus M FLIGHT MANUAL b) Wing tank(s) (Option) Refuelling of the wing tank(s) has to be done at the rigged glider. The wing tank(s) don’t have an own fuel level indication. Therefore it is recommended to use calibrated fuel canisters for refuelling the wing tank(s).
  • Page 60 SCHEMPP-HIRTH FLUGZEUGBAU GmbH., KIRCHHEIM/TECK Arcus M FLIGHT MANUAL b) Wing tank(s) (Option) (continued) Refuelling with external fuel pump Connect the external fuel hose of the external filling pump directly with the fuel line of the respective wing tank at the root rib in front of the spare stubs and start the external filling pump.
  • Page 61 SCHEMPP-HIRTH FLUGZEUGBAU GmbH., KIRCHHEIM/TECK Arcus M FLIGHT MANUAL Determination of fuel contents a) fuselage tank The fuel content of the fuselage tank is measured with a capacitive sensor. The panel mounted engine control unit MCU II displays the fuel content of the fuselage tank (max.
  • Page 62 SCHEMPP-HIRTH FLUGZEUGBAU GmbH., KIRCHHEIM/TECK Arcus M FLIGHT MANUAL Determination of fuel contents (continued) b) Wing tank(s) (option) The fuel content of the wing tank(s) is not measured. Therefore the amount of fuel filled into the wing tank(s) has to be determined during refuelling.
  • Page 63 SCHEMPP-HIRTH FLUGZEUGBAU GmbH., KIRCHHEIM/TECK Arcus M FLUGHANDBUCH Installed Refueling System Expansion reservoir in baggage compartment vent line wing tank Quick-disconnect coupling fuel line wing tank On/OFF switch for installed fuel pump October 2011 Revision – appr. 4.2.2.6...
  • Page 64 When walking around the Arcus M, check all surfaces for paint cracks, dents and unevenness. In case of doubt, ask an expert for advice.
  • Page 65 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Arcus M FLIGHT MANUAL Check for the presence of foreign objects Check fuel quantity Check fuel line(s) and vent line(s) – especially those for the wing tank(s) - for proper connection Check tire pressure: Nose wheel: 3.0 bar (43 psi)
  • Page 66 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Arcus M FLIGHT MANUAL (4) a) Check fuselage for damage, especially on its lower side Check that the Static pressure ports for the airspeed indicator on the tail boom are clear (1.02 m / 3.35 ft forward of the base of the fin)
  • Page 67 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Arcus M FLIGHT MANUAL a) Check condition of tall skid or wheel. If the latter is installed, check tire pressures 3.0 bar (44 psi) b) Should a total energy compensation probe be used, mount it (head pointing upwards) and check the line (when blowing gently into the probe, the variometer(s) connected should read "climb")
  • Page 68 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Arcus M FLIGHT MANUAL a) Check correct battery installation in vertical tail according to loading chart b) Check horizontal tailplane for proper attachment and locking c) Check elevator and rudder for free movement d) Check trailing edge of elevator and rudder for damage...
  • Page 69 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Arcus M FLIGHT MANUAL Preflight inspection CHECK LIST BEFORE TAKE-OFF Water ballast in fin tank ? (if installed) Loading charts checked ? Parachute securely fastened ? Safety harness secured and tight ? Seat back, head rest and pedals in...
  • Page 70 As the tow rope tightens, apply the wheel brake gently (by actuating the stick-mounted lever) to prevent the Arcus M from over running the rope. In crosswind conditions, keep in mind that at the beginning of the take off roll, there is an increase of the lift generated on the downwind wing from the tug’s...
  • Page 71 The undercarriage may be retracted during the tow; this is not, however, recommended at low altitude, as changing hands on the stick could easily cause the Arcus M to lose station behind the tug. When releasing the tow rope, pull the yellow T-shaped handle fully multiple times and turn only after the rope has definitely disconnected.
  • Page 72 Depending on the load on the seats, the Arcus M is lifted off with the control stick pushed slightly forward in the case of aft c/g positions and pulled slightly back with the c/g in a forward position.
  • Page 73 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Arcus M FLIGHT MANUAL CAUTION: Winch launching at the maximum permitted all-up mass should only be done if there is an appropriately powerful winch and a cable in perfect condition available. Furthermore, there is not much point in launching by winch for a soaring flight if the release height gained is less than 300 m (984 ft).
  • Page 74 SCHEMPP-HIRTH FLUGZEUGBAU GmbH., KIRCHHEIM/TECK Arcus M Engine starting, run-up and taxiing Apply wheel brake and proceed as shown in the following list: POWER PLANT EXTENSION / STARTING PROCEDURE Power plant master switch ON OPEN fuel shut-off valve ON THE GROUND:...
  • Page 75 SCHEMPP-HIRTH FLUGZEUGBAU GmbH., KIRCHHEIM/TECK FLUGHANDBUCH Starting the engine in flight Set speed to 95 through 100 km/h for extending the powerplant and starting the engine The starting process of the engine in flight is the same as on the ground.
  • Page 76 SCHEMPP-HIRTH FLUGZEUGBAU GmbH., KIRCHHEIM/TECK Arcus M FLIGHT MANUAL 4.5.2 Take off (on own power) and climb Conduct take-off check (see page 4.4) and observe page 5.2.3 (take-off distances). For take-off the wing should be held level by an assistant. Compensate an asymmetric fuel load in the wing tanks by applying opposite aileron when commencing the take-off run.
  • Page 77 SCHEMPP-HIRTH FLUGZEUGBAU GmbH., KIRCHHEIM/TECK Arcus M FLIGHT MANUAL WARNING: Taking-off in rain, with wet or iced-up wings is not permitted, as the take-off distance increases considerably. Furthermore the climb performance is adversely affected! Caution: If, at high ambient temperatures, the coolant liquid temperature rises too high, the cause may also be the anti-freeze proportion being too much for such temperatures.
  • Page 78 4.5.3 Flight / Cross country flight a) Powerplant retracted The Arcus M has pleasant flight characteristics and can be flown effortlessly at all speeds, loading conditions (with or without water ballast), configurations, and c/g positions. With a mid-point c/g position the maximum speed range covered by the elevator trim is from about 70 km/h (38 kts, 43 mph) (flap L) to about 200 km/h (108 kts, 124 mph) (flap S).
  • Page 79 WARNING: It is strictly noted that in a dive with the airbrakes extended, the Arcus M has to be pulled out less abruptly (maximum 3.5 g) than with retracted brakes (5.3 g), see section 2.9 "Manoeuvring Load Factors". Therefore pay attention when...
  • Page 80 SCHEMPP-HIRTH FLUGZEUGBAU GmbH., KIRCHHEIM/TECK Arcus M FLIGHT MANUAL Optimum flap positions The camber-changing flaps alter the wing section such that the laminar bucket is always well suited to the actual flying speed. Use of flaps for flaps units AUW = 625 kg...
  • Page 81 SCHEMPP-HIRTH FLUGZEUGBAU GmbH., KIRCHHEIM/TECK Arcus M FLIGHT MANUAL Low speed flight and stall behaviour (power plant retracted) In order to become familiar with the powered sailplane it is recommended to explore its low speed and stall characteristics at a safe height. This should be done using the various flap settings while flying straight ahead and also in a 45°...
  • Page 82 (power plant retracted) When stalled during a coordinated 45° banked turn and a forward c/g, the Arcus M - with the control stick pulled fully back -will continue to fly in a stalled condition. With aft c/g during the turning stall, the inside wing will drop and the nose will drop below the horizon.
  • Page 83 6600 RPM is approx. 150 km/h (81 kt, 93 mph) with flaps set at “-1”. At this speed the “Arcus M” shows a stable behaviour and is easy to control. Flown in a shallow dive, the maximum permitted engine speed of...
  • Page 84 SCHEMPP-HIRTH FLUGZEUGBAU GmbH., KIRCHHEIM/TECK Arcus M FLIGHT MANUAL Cruising on own power As clearly shown by the figures of section “Flight Performance”, the longest range results from the “sawtooth method”, which consists of the following flight sections being repeated as required: „...
  • Page 85 SCHEMPP-HIRTH FLUGZEUGBAU GmbH., KIRCHHEIM/TECK Arcus M FLIGHT MANUAL Stopping the engine, retracting the propeller See also the following checklist: Remarks regarding the vertical positioning of the propeller If the propeller hasn’t reach its vertical position after the engine has stopped,...
  • Page 86 SCHEMPP-HIRTH FLUGZEUGBAU GmbH., KIRCHHEIM/TECK Arcus M FLIGHT MANUAL Extending the prop, starting the engine in flight 1. With the prop extended and engine off, the rate of descent is approx. 2.25 m/s (443 fpm) at a speed of 105 km/h (57 kt, 65 mph), resulting in a glide ratio of only about 13 : 1 –...
  • Page 87 SCHEMPP-HIRTH FLUGZEUGBAU GmbH., KIRCHHEIM/TECK Arcus M FLIGHT MANUAL Low speed flight and stall behaviour (propeller extended) Compared with the stall behaviour in “clean” configuration (prop retracted), there are no significant differences when aircraft stalls from straight and level or from turning flight.
  • Page 88 WARNING: Both the performance and the aerodynamic characteristics of the ARCUS M are affected adversely by rain or ice on the wing. Be cautious when landing! Increase the approach speed at least 5 to 10 km/h (3-5 kts, 3-6 mph).
  • Page 89 Power plant extended (only permissible with ignition switched OFF and in emergency case) With power plant extended (and ignition OFF), the “Arcus M” can be landed in a similar manner as in “clean configuration” (prop retracted). However the disturbances of the extended power plant influence the airflow around the fin, whereby a manipulation of the effectiveness of rudder and elevator control is possible.
  • Page 90 SCHEMPP-HIRTH FLUGZEUGBAU GmbH., KIRCHHEIM/TECK Arcus M FLIGHT MANUAL 4.5.5 Landing a) Propeller retracted For off-field landings the undercarriage should always be extended, as the protection of the crew is much better, especially from vertical impacts on landing. Main wheel and tail wheel resp. skid should touch down simultaneously.
  • Page 91 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Arcus M FLIGHT MANUAL 4.5.6 Flight with water ballast Water ballast is required for reaching the maximum permitted all-up mass. Wing ballast tanks The water tanks are integral compartments in the nose section of the main wing panels.
  • Page 92 When flying at maximum permitted all-up mass, the low speed and stall behaviour of the Arcus M is slightly different from its flight characteristics without water ballast: The stall speeds are higher (see section 5.2.2) and for correcting the flight attitude larger control surface deflections are required.
  • Page 93 SCHEMPP-HIRTH FLUGZEUGBAU GmbH., KIRCHHEIM/TECK Arcus M FLIGHT MANUAL Water ballast fin tank The tank label is on the right hand side of the fin. To ensure optimum performance in circling flight, a forward centre of gravity, caused by water ballast in the wing nose and/or by a crew member in the rear seat, may be compensated by carrying water ballast in the fin tank.
  • Page 94 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Arcus M FLIGHT MANUAL Water is dumped from the fin tank through an opening on the underside of the fuselage tail boom - adjacent to the rudder. The fin tank dump valve is linked to the torsional drive for the valves in the main wing panels so that these three tanks are always emptying simultaneously.
  • Page 95 5. Never pressurize the tanks - for instance by filling them directly from a water hose – and always pour in clean water only. 6. The Arcus M, should never be parked with full ballast tanks if there is any danger whatsoever of them freezing.
  • Page 96 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Arcus M FLIGHT MANUAL 4.5.7 High altitude flight When flying at high altitude it should be noted that true airspeed (TAS) increases in relation to indicated airspeed (IAS). This difference does not af- fect the structural integrity or load factors, but to avoid any risk of flutter, the...
  • Page 97 SCHEMPP-HIRTH FLUGZEUGBAU GmbH., KIRCHHEIM/TECK Arcus M FLIGHT MANUAL Note: From many years of experience, the polyester finish on this aircraft is known to become very brittle at low temperature. Particularly when flying in wave at altitudes in excess of about 6000 m (approx.
  • Page 98 Flight in rain a) Power plant retracted: When flying the “Arcus M” with a wet surface or in rain, the water drops adhering to the wings cause a deterioration of its flight performance which cannot be expressed in numerical values due to the difficulties involved with such measurements.
  • Page 99 WARNING: The Arcus M is a high performance powered sailplane. Therefore the Arcus M will gain speed very rapidly in dive. Aerobatic manoeuvres with the Arcus M should only be performed if you can handle these aerobatic manoeuvres safely with similar sailplane types or if you’ve been briefed in detail by a pilot experienced...
  • Page 100 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Arcus M FLIGHT MANUAL Inside loop Enter manoeuvres at a speed between 180 km/h and 210 km/h (recommended). The speed during the recovery of this manoeuvre should remain in the same speed range. The load factor during the manoeuvre depends on the selected entering speed.
  • Page 101 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Arcus M FLIGHT MANUAL Spinning Stationary spinning is possible with middle to rear centre of gravity positions and is only allowed with flap position "0". Spinning is induced with the standard method: Stall the powered sailplane slowly until the first signs of separated airflow can be recognized, i.e.
  • Page 102 SCHEMPP-HIRTH FLUGZEUGBAU GmbH., KIRCHHEIM/TECK Arcus M FLIGHT MANUAL Section 5 Performance Introduction LBA-approved data 5.2.1 Airspeed indicator system calibration 5.2.2 Stall speeds 5.2.3 Take-off distances 5.2.4 Additional information Additional information – LBA approval not required 5.3.1 Demonstrated crosswind performance 5.3.2 Flight polar / Range 5.3.3 Noise data...
  • Page 103 This section provides approved data for airspeed calibration, stall speeds and non-approved additional information. The data in the charts has been computed from actual flight tests with a Arcus M in good condition and using average piloting techniques. October 2011 Revision --...
  • Page 104 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Arcus M FLIGHT MANUAL Approved data 5.2.1 Airspeed indicator system calibration Errors in indicated airspeed (IAS) caused by Pitot/Static pressure errors may be read off from the calibration chart below. These charts are applicable to free flight.
  • Page 105 SCHEMPP-HIRTH FLUGZEUGBAU GmbH., KIRCHHEIM/TECK Arcus M FLIGHT MANUAL 5.2.2 Stall speeds The following stall speeds (IAS) at various flap settings were determined in straight and level flight: Configuration POWER PLANT RETRACTED All-up mass 800 kg 800 kg (approx.) 1764 lb...
  • Page 106 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Arcus M FLIGHT MANUAL 5.2.3 Take-off distances (at calm air) All figures shown below refer to ICAO standard atmosphere and are based on the maximum permitted all-up mass of 800 kg (1764 lb). Ground run distance:...
  • Page 107 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Arcus M FLIGHT MANUAL 5.2.4 Additional information N o n e October 2011 Revision -- appr. 5.2.4...
  • Page 108 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Arcus M FLIGHT MANUAL Non-approved additional- information 5.3.1 Demonstrated crosswind performance The maximum crosswind velocity, at which take-offs and landings have been demonstrated, is 20 km/h (11 kts ). October 2011 Revision -- 5.3.1...
  • Page 109 SCHEMPP-HIRTH FLUGZEUGBAU GmbH., KIRCHHEIM/TECK Arcus T FLIGHT MANUAL 5.3.2 Flight polar All values shown below refer to MSL (0 m) and 15° C (59° F). a) Power plant retracted (or removed) All-up weight (mass) 620*) kg 800*) 1367 1764 Wing loading kg/m²...
  • Page 110 SCHEMPP-HIRTH FLUGZEUGBAU GmbH., KIRCHHEIM/TECK Arcus M FLIGHT MANUAL October 2011 Revision -- 5.3.2.2...
  • Page 111 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Arcus M FLIGHT MANUAL Range (without influence of wind) Values below refer to level flight at cruising power (continuous RPM): Cruising speed approx.: 150 km/h (81 kt, 93 mph) Fuel consumption approx.: 24.50 Liter/h (6.47 US Gal./h, 5.39 IMP Gal./h)
  • Page 112 5.3.3 Noise data In a climb according to chapter X of the Aircraft Noise Protection Require- ments (LSL), the measured noise level of the „Arcus M“ equipped with the Solo engine 2625-02i is xxx dB(A) and is thus far below (- dB(A)) the noise level limit of 73.4 dB(A).
  • Page 113 SCHEMPP-HIRTH FLUGZEUGBAU GmbH., KIRCHHEIM/TECK Arcus M FLIGHT MANUAL Section 6 Weight (mass) and balance Introduction Weight (mass) and balance record and permitted payload range Determination of: „ Water ballast in wing tanks „ Water ballast in fin tank October 2011 Revision -- 6.1.1...
  • Page 114 Arcus M FLIGHT MANUAL Introduction This section contains the seat load range within which the Arcus M may be safely operated. Procedures for weighing the powered sailplane and the calculation method for establishing the permitted payload range and a comprehensive list of all equipment available are contained in the Arcus M Maintenance Manual.
  • Page 115 Maintenance Manual. Both loading charts (weight & balance log sheets) are only applicable for this particular Arcus M, the serial number of which is shown on the title page. A front seat Ioad of less than the required minimum is to be compensated by ballast - there are three (3) methods: 1.
  • Page 116 Altering the front seat load by using trim ballast Optional trim ballast mounting provision On request the Arcus M is equipped with one or two mounting provisions for trim ballast, thus allowing a reduction of the placarded minimum front seat load (when flown solo) as shown in the table below.
  • Page 117 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Arcus M FLIGHT MANUAL WEIGHT AND BALANCE LOG SHEET (loading chart) FOR S/N ... POWER PLANT INSTALLED Date of weighing: Empty mass [kg] Equipment list dated count count count count Installed batteries C1/C2 C1/C2 C1/C2 C1/C2...
  • Page 118 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Arcus M FLIGHT MANUAL WEIGHT AND BALANCE LOG SHEET (loading chart) FOR S/N ... POWER PLANT REMOVED Date of weighing: Empty mass [kg] Equipment list dated count count count count Installed batteries C1/C2 C1/C2 C1/C2 C1/C2...
  • Page 119 SCHEMPP-HIRTH FLUGZEUGBAU GmbH., KIRCHHEIM/TECK Arcus M FLIGHT MANUAL Maximum water ballast load Maximum all-up mass including water ballast: 1764 C/G position of water ballast in wing tanks (forward of datum): 0.70 Total capacity of wing tanks: 185 Litre (48.9 US. Gal /40.7 IMP Gal)
  • Page 120 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Arcus M FLIGHT MANUAL Water ballast in (optional) fin tank In order to shift the centre of gravity close to its aft limit (favourable in terms of performance), water ballast may be carried in the fin tank (m...
  • Page 121 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Arcus M FLIGHT MANUAL Water ballast in (optional) fin tank Important Note: When determining the maximum usable load in the fuselage, the quantity of water ballast in the fin does not need to be taken in account because of flight mechanic reasons.
  • Page 122 SCHEMPP-HIRTH FLUGZEUGBAU GmbH., KIRCHHEIM/TECK Arcus M FLIGHT MANUAL Lever arm of water ballast in fin tank (m ): 5292 mm (17.36 ft) aft of datum plane Fin tank capacity: 11 kg/Liter (2.91 US Gal., 2.42 IMP Gal.) Max. water ballast in main wing panels 40.70 48.87 185...
  • Page 123 SCHEMPP-HIRTH FLUGZEUGBAU GmbH., KIRCHHEIM/TECK Nimbus-4DM FLIGHT MANUAL Section 7 Description of the aircraft and its system Introduction Cockpit-Description Instrument panels Undercarriage Seats and restraint systems Static pressure and Pitot pressure system Airbrake system Baggage compartment Water ballast system(s) 7.10 Power plant system 7.11 Fuel system...

  • Page 124: Supplements

    SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Arcus M FLIGHT MANUAL Introduction This section provides a description of the powered sailplane including the operation of its systems. For details concerning optional- systems and equipment refer to section 9 "Supplements". For further descriptions of components and systems refer to section 1 of the Maintenance Manual.
  • Page 125 SCHEMPP-HIRTH FLUGZEUGBAU GmbH., KIRCHHEIM/TECK Arcus M FLIGHT MANUAL Cockpit-Description October 2011 Revision -- 7.2.1...
  • Page 126 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Arcus M FLIGHT MANUAL All instruments and control elements are within easy reach of the crew. Instrument panels With canopy opened, the instruments for either seat are easily accessible. The front instrument panel can be pivoted upwards if the canopy is open.
  • Page 127 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Arcus M FLIGHT MANUAL (3a) Rudder pedal adjustment (front seat) Black T-shaped handle on the right hand side near the base of the control stick. Forward adjustment: Release locking device by pulling the handle, push pedals to desired position with the heels and let them engage.
  • Page 128 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Arcus T FLIGHT MANUAL Ventilation a) Small black knob on the front instrument panel on the right: (Ventilation air quantity) Pull to open ventilator nozzle Push to close ventilator nozzle b) Adjustable bull-eye-type ventilator starboard of the right:...
  • Page 129 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Arcus M FLIGHT MANUAL Elevator trim Green knob (for either seat) at the seat pan mounting flange on the left. The spring-operated elevator trim is gradually adjustable by swinging the knob slightly inwards, sliding it to the desired position and swinging it outwards to lock.
  • Page 130 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Arcus M FLIGHT MANUAL (11) Rip cord anchorage (not illustrated) Front seat: Red steel ring on tubular frame between the seats on the left Rear seat: Red steel ring at the front of the steel tube center (not...
  • Page 131 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Arcus M FLIGHT MANUAL Undercarriage (15 ) Front / Rear seat Retracting : Disengage black handle below the cockpit inner skin on the right, pull it back and lock in rear recess Extending: Disengage handle, push it forward and lock in front recess...
  • Page 132 SCHEMPP-HIRTH FLUGZEUGBAU GmbH., KIRCHHEIM/TECK Arcus M FLIGHT MANUAL (17) Prop arresting device Black T-shaped handle on the front of the left cockpit inner skin (for either seat) T-shaped pulled back: brake operation (for manual stopping and holding prop) (18) Fuel shut-off valve...
  • Page 133 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Arcus M FLIGHT MANUAL Instrument panels Front panel: For a description of components No. I through VII refer to the following pages: 7.3.2 through 7.3.18. A description of the instrumentation and an illustration of the rear instrument panel is not deemed necessary.
  • Page 134 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Arcus M FLIGHT MANUAL Engine Control Unit MCU II The engine control unit MCU II is build up out of the operating unit in the instrument panel (see picture above) and a control unit (below the rear seat pan).
  • Page 135 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Arcus M FlLIGHT MANUAL Engine control unit MCU II (continued) Overview of readouts and control elements RPM Indicator: No signal - RPM below 2500 or engine not running Green light - RPM between 2500 and 6600...
  • Page 136 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Arcus M FLIGHT MANUAL Engine control unit MCU II (continued) Overview of readouts and control elements (continued) Manual operation switch (Pylon drive switch) The manual operation switch is used to extend and retract the power plant:...
  • Page 137 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Arcus M FLIGHT MANUAL Engine control unit MCU II (continued) Overview of readouts and control elements Menu push-button: Features: Scroll through the menu of the LCD display Affirmation of warnings and error messages Rset of short period elapsed-time counter...
  • Page 138 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Arcus M FLIGHT MANUAL Engine control unit MCU II (continued) Overview of readouts and control elements Ignition switch: (continued) Note: To start the automatic retraction process of the power plant with switching off the ignition the rpm of the engine has to meet the following...
  • Page 139 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Arcus M FLIGHT MANUAL Engine control unit MCU II (continued) Overview of readouts and control elements Test switch for Ignition circuits I – II: Rocker switch for testing both ignition circuits. In upper position ignition circuit 1 is active, in lower position ignition circuit 2 is active.
  • Page 140 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Arcus M FLIGHT MANUAL Engine control unit MCU II (contd.) Ι a) Overview about the readouts and control elements (contd.) LCD-Display In the eight-digit LCD-display the following values are displayed in the auto- matic mode when the engine is extended and running (powered sailplane mode): - Engine speed (RPM) and cooling liquid temperature (°C):...
  • Page 141 SCHEMPP-HIRTH FLUGZEUGBAU GmbH., KIRCHHEIM/TECK Arcus M FLIGHT MANUAL ON/OFF switch for the redundancy engine control system Upward position: Engine operation with redundancy system Downward position: regular Engine operation Pneumatic valve Panel-mounted two-way cock (should a total energy compensation probe be used).
  • Page 142 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Arcus M FLIGHT MANUAL Fuse console (at panel base): Engine master switch Avionic master switch Circuit breaker-Generator Circuit breaker-Spindle drive Circuit breaker-Power plant system Circuit breaker-Emergency system Circuit breaker-Injection sys- Circuit breaker-Fuel pump Circuit breaker-Relay Circuit breaker-Avionic M...
  • Page 143 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Arcus M FLIGHT MANUAL Circuit breaker-Spindle drive 12 A Protection of spindle drive used for extending and retraction of the power plant. Circuit breaker-Power plant system 7,5 A Protection of power plant system Circuit breaker-Emergency system 7,5 A...
  • Page 144 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Arcus M FLIGHT MANUAL Priority selector switch (optional) Key down: engine control unit in front panel active Key up: engine control unit in rear panel active Note: The inactive engine control unit retains all its indicating functions –...
  • Page 145 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Arcus M FLIGHT MANUAL 13. Emergency switch (ctd.) The extreme pylon positions are recognized as follows: Extended: Pivoting motion of pylon is stopped by arresting wire (watch rear-view mirror) and the circuit breaker will trip. (If spindle drive circuit breaker trips, reset it instantly).
  • Page 146 Arcus M FLIGHT MANUAL Undercarriage The main wheel of the Arcus M is retractable with shock absorber struts and features a hydraulic disc brake. The nose wheel (if installed) and tail wheel (or skid) are fixed. The extension/retraction process of the main wheel is described on page 7.2.7 (cockpit description).
  • Page 147 While the shoulder straps for the front seat are attached to the steel tube transverse frame, those for the rear seat are anchored to the steel tube center frame. A list of approved restraint systems is provided in section 7.1 of the Arcus M Maintenance Manual. October 2011...
  • Page 148 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Arcus M FLIGHT MANUAL Static pressure and Pitot pressure system Static pressure sources a) Static pressure ports are on either side of the fuselage tail boom, 1.02 m / 40.16 in. forward of the base of the fin.
  • Page 149 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Arcus M FLIGHT MANUAL Airbrake system Schempp-Hirth type airbrakes are employed on the upper surface of the main wing panels. A schematic view of the airbrake system is given in the Maintenance Manual. October 2011 Revision --...
  • Page 150 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Arcus M FLIGHT MANUAL Baggage compartment An enclosed baggage compartment is not provided. For soft objects (like jackets etc.), however, there is space above the spar stubs. Any such items must be taken into account when determining the permissible load on the seats.
  • Page 151 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Arcus M FLIGHT MANUAL Water ballast system(s) A steel cable connects the operating lever in the cockpit to the dump valve of the (optional) fin tank and a further steel cable to the torque tube actuating the wing tanks - see page 7.9.3.
  • Page 152 SCHEMPP-HIRTH FLUGZEUGBAU GmbH., KIRCHHEIM/TECK Arcus M FLIGHT MANUAL WATER BALLAST SYSTEM - WING Water tank filler opening with strainer and vent hole Water dump valve actuation for wing coupled with dump valve actuation for fin tank to water dump connecting rod...
  • Page 153 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Arcus M FLUGHANDBUCH WASSERBALLASTSYSTEM-SEITENFLOSSENTANK Wasserablaßbetätigung-Flügel Wasserablaß-Verbindungsstange Wasserablaßantrieb-Seitenflossentank Ablaßventil Entwässerungsbohrung Einfüllöffnung Ablaßbohrung Wasserstandsanzeige Oktober 2011 Revision -- 7.9.3...
  • Page 154 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Arcus M FLIGHT MANUAL 7.10 Power plant system Engine and propeller (for a description and relevant data refer to the engine and propeller manual) are accommodated in a special CFRP mounting structure (pylon), which is pivoted to the fuselage steel tube center frame by means of two rubber shock mounts (vibration isolators).
  • Page 155 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Arcus M FLIGHT MANUAL 7.11 Fuel system A view of the fuel system is given on page 7.11.2 – for a specification of the fuel to be used refer to page 2.4 Up to two flexible tanks may be used inside left and right wing optionally.
  • Page 156 SCHEMPP-HIRTH FLUGZEUGBAU GmbH., KIRCHHEIM/TECK Arcus M FLIGHT MANUAL 21 20 FUEL SYSTEM M09 RT 882 October 2011 Revision -- 7.11.2...
  • Page 157 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Arcus M FLUGHANDBUCH Stückliste zur Seite 7.11.2 O P T I O N E N T-Stück NORMA Schlauchkupplung LP-002-0-SL006-23-2 WALTHER Stecknippel LP-002-1-SL006-23 WALTHER Schlauchkupplung SP-006-0(2)-SL006-11-2 WALTHER Zugentlastung Flügeltank li. (1500 x 250) HFK-W-TLF HEIMANN Teil Stück...
  • Page 158 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Arcus M FLIGHT MANUAL 7.12 Electrical system Gliding avionics When operated in the plain sailplane configuration, the minimum instrumentation prescribed does not require an electrical power source. Additional- equipment is to be wired as shown on page 7.12.3 and 7.12.4 “ELECTRICAL SYSTEM –...
  • Page 159 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Arcus M FLIGHT MANUAL Electrical system (ctd.) Gliding avionics Using a selector switch, power may also be provided by the power plant battery. A main switch controls the power sources for power plant and gliding avionics.
  • Page 160 SCHEMPP-HIRTH FLUGZEUGBAU GmbH., KIRCHHEIM/TECK Arcus M FLIGHT MANUAL Note: VHF-Transceiver and other additional equipment to be wired in compliance with the manufacturer's 1 battery 12V / 16 - 18Ah instructions and be fused individually. (OPTION) 1 - 2 batteries 12V / each 5.7 - 9Ah (OPTION) 1 - 2 batteries 12V / each 5.7 - 9Ah...
  • Page 161 Note: After oxygen systems are installed, it is necessary to re-establish the empty mass c/g position of the concerned Arcus M to ensure that the centre of gravity is still within the permitted range. A List of oxygen regulators, currently approved, is found in the Arcus M Maintenance Manual.
  • Page 162 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Arcus M FLIGHT MANUAL ELT-installation The installation of an Emergency Locator Transmitter is possible in the following places and must comply with the instructions obtained from Schempp-Hirth: „ In the region of the rear seat on either seat pan mounting flange „...
  • Page 163 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Arcus M FLIGHT MANUAL Section 8 Handling, care and maintenance Introduction Inspection periods Alterations or repairs Ground handling / road transportation Cleaning and care October 2011 Revision -- 8.1.1...
  • Page 164 CAUTION: It is wise to follow a planned schedule of lubrication and preventative maintenance based on climate and flying conditions encountered -see section 3.2 of the Arcus M Maintenance Manual. October 2011 Revision -- 8.1.2...
  • Page 165 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Arcus M FLIGHT MANUAL Powered sailplane inspection periods (for details concerning the maintenance of this powered sailplane refer to its Maintenance Manual) Airframe maintenance Under normal operating conditions no airframe maintenance work is required between the annual inspection, except for the routine greasing of the spigots and ball bearings of the wing and tailplane attachment fittings.
  • Page 166 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Arcus M FLIGHT MANUAL Power plant maintenance Propeller: Maintenance work on the propeller is required after every 25 hours of engine time or at least once every year and must comply with the instructions given in propeller manual.
  • Page 167 CFRP/GFRP structure etc. If there is any uncertainty whatsoever regarding the significance of damage discovered, the Arcus M should always be inspected by a CFRP/GFRP expert. There is no objection to minor damage - which does not affect the airworthiness in any way - being repaired on site.
  • Page 168 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Arcus T FLIGHT MANUAL Ground handling / road transportation a) Towing / pushing When towing the powered sailplane behind a car, a tail dolly should always be used to avoid unnecessary tailplane vibration on the fittings - especially in tight turns.
  • Page 169 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Arcus M FLIGHT MANUAL Cleaning and care Although the surface coating of a composite aircraft is robust and resistant, always take care to maintain a perfect surface. For cleaning and caring the following is recommended: Clean the surface (especially the leading edge of wing panels, horizontal stabilizer and fin) with clear water, a sponge and a chamois leather.
  • Page 170 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Arcus M FLIGHT MANUAL The canopy should be cleaned with a plexiglass cleaner (e.g. "Mirror Glaze", "Plexiklar” or similar) or with warm water if necessary. The canopy should be wiped down with a soft clean chamois leather or a very soft material such as cotton.
  • Page 171 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Arcus M FLIGHT MANUAL Section 9 Supplements Introduction List of inserted supplements October 2011 Revision -- 9.1.1...
  • Page 172 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Arcus T FLIGHT MANUAL Introduction This section contains the appropriate supplements necessary to safely and efficiently operate the Arcus T when equipped with various optional systems and equipment not provided with the standard aircraft. October 2010 Revision -- 9.1.2...
  • Page 173 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Arcus M FLIGHT MANUAL List of inserted supplements Date Section Title of inserted supplements...
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