Game Composites GB1 GameBird, Руководство по обслуживанию

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Maintenance Manual GB1 GameBird
Page date: April 24, 2020
28-2
Fuel System General
The fuel system consists of two separate wing tanks and the Acrotank in the forward fuselage.
Only the use of Avgas 100 / 100LL is permitted.
Acrotank, located in the forward fuselage: 25 Gal (95 litres)
Wings fuel tanks, left and right:
28 Gal (108 litres) each
Total fuel capacity: 81 Gal (311 litres)
The composite Acrotank features a separated ‘header’ volume with 2.3 US gallons (9 Litres) capacity , which is
gravity-fed during positive load, and features a stand pipe to prevent draining in negative loading.
The main section of the Acrotank is filled with an explosion and slosh suppressing foam.
Fuel is picked up through a flop tube (flexible hose with a bob weight at the pick-up end) designed to maintain
fuel flow to the engine during aerobatic manoeuvres.
The Acrotank is shown below in upright and inverted positions.
Upright Inverted
The wing tanks are sealed sections of the composite wing structure (wet wings), with fuel pickups, vent line
and fuel sensor located in the root rib. Those components are accessible when the wing is removed from the
fuselage.
The wing tank vent outlets are located on the bottom of the fuselage near the leading-edge wing roots.
The Acrotank vent is located aft of the right-hand landing gear leg fairing.
Each tank has a drain valve. The three drain points are located under the centre part of the airplane and are
marked with placards.
Strainers are installed at the pickup points of each tank, and a Gascolator is located aft of the right-hand
landing gear leg fairing.
In addition to the mechanically driven fuel pump on the engine, an electrically driven auxiliary fuel pump is
installed. It is used for priming before engine start. The auxiliary pump is able to supply the engine at full
power should the engine driven pump fail. It can also be used as a boost pump.
The wing tanks have float-type level sensors; Acrotank features a capacitive sensor.
The mechanically actuated fuel selector valve is mounted below the main tank and behind the firewall.
Torque-tubes with universal joints connects the selector switch in the rear centre
console to the valve.
To select a tank, turn the red handle 90° (LEFT/ RIGHT) or 180° (ACRO) so that it
points towards the tank in use.
To cut off the fuel supply, lift the knob and simultaneously turn the handle until it
faces downward (OFF).