Hawker Beechcraft Hawker 800XP, Руководство по эксплуатации для пилотов

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P/N 140-590032-0007
Revision A4: Sep, 2010
Section III Sub-section 3
FUEL SYSTEM
Pilot’s Operating Manual
GENERAL
The fuel storage system consists of three fuel tanks:
• Two integral fuel tanks, one in each wing
• A ventral fuel tank under the lower aft fuselage (if installed)
The system has both a wing tank to wing tank transfer capability, and a crossfeed capability from either
wing tank to one or both of the engines. A fuel transfer system permits fuel transfer from the auxiliary
ventral tank into either one or both of the wing tanks.
Jet pumps use motive flow action from electrical fuel pumps to draw fuel from the wings into the number
one compartment (aft center wing section). The electrical fuel pumps deliver pressurized fuel to the
engines. The fuel system has a gravity refueling and a pressure refueling/defueling capability.
For information on the engine fuel system components refer to Sub-section 2 ENGINES.
WING TANKS
Each wing is a sealed structure (wet wing) forming a tank which is divided into six anti-surge
compartments by spars allowing fuel to pass via stringers to the No. 1 compartment which acts as the
fuel reservoir.
With the fuel pumps operating, and the appropriate transfer selection made, fuel can be transferred
between the wing tanks, and from the ventral tank to the wing tanks.
NOTE: The engines cannot receive fuel directly from the ventral tank, the fuel from the ventral tank
must be transferred to the wing tanks first.
Fuel cross-feed and wing to wing transfer is controlled by a lever labelled WING FUEL/X-FEED/
TRANSFER located on the lower center console.
When the WING FUEL cock is moved to the center X-FEED position, the fuel cross-feed valve is
opened to connect both engine feed lines together. This allows either fuel pump to supply fuel to both
engines. Non-return valves prevent fuel being fed back into the tank with the inoperative fuel pump.
When cross-feeding the fuel is drawn from one wing tank only. This results in the wings becoming
progressively out of balance.
NOTE: The maximum lateral imbalance permitted is 500 lbs.
This is monitored on the left and right wing fuel contents indications displayed on the Copilot’s
Multifunction Display (MFD).
To correct any out-of-balance the WING FUEL cock is moved to the bottom TRANSFER position. The
inter-wing transfer valve opens in addition to the cross-feed valve (already opened) and transfer of fuel
from the heavy wing to the lighter wing takes place via the jet pump.