Hawker Beechcraft Hawker 800XP, Руководство по эксплуатации для пилотов

Страница: 128 / 923

Page 3-7
P/N 140-590032-0007
Revision A4: Sep, 2010
Section III Sub-section 3
FUEL SYSTEM
Pilot’s Operating Manual
Gravity Filler
A flush mounted fuel filler assembly is located on the upper surface of each wing near the outboard
leading edge. The assembly includes a wing skin adaptor, flap valve, lockable cap and a lanyard that
attaches the cap to the wing. Each cap is recessed to allow for the flush fitting handles and is marked
with an arrow to indicate the open and closed positions. The filler cap adaptor also incorporates a
rubber flap valve that prevents fuel spillage during flight, in the event that the cap is inadvertently left off.
The ventral tank is gravity fueled through the ventral tank filler assembly, which is accessible through a
hinged door aft of the rear equipment bay door beneath the aft section of the right engine. The ventral
tank is gravity fueled in the same manner as the wing tank.
Pressure Refueling
A standard type 2 1/2 inch pressure refueling coupling is accessible through a hinged door recessed
into the ventral tank fairing at the rear right side of the airplane. The airplane fuel system accepts a
maximum refueling supply pressure of 50 psi.
Incorporated into the fuel system is a pressure reducing valve that reduces the refueling pressure within
the system to 25 psi. Restrictors limit flow rates into tanks and surge relief valves modulate transient
high pressures.
FUEL PROBES and FLOAT SWITCHES
Both wing tanks have a capacitance type contents indicating system. Six capacitance type transmitter
probes in each wing supply fuel quantity information to the fuel quantity indications on the Copilot’s
Multifunction Display (MFD).
The fuel probes are positioned within the tanks so that between certain limits, the airplane attitude does
not effect the indicated contents. A high level/low level float switch in the ventral tank supplies fuel level
information to the Data Concentrator Unit (DCU) which is then indicated on the Copilot’s Multifunction
Display (MFD).
NOTES:
1. When gravity refueling is used the tank capacities will increase by 3 U.S. gallons
(11 Liters).
2. For airplanes without an external toilet servicing facility, the capacity of the ventral tank
will increase by 5 U.S. gallons (19 liters).
Table 1: Pressure Refueling Quantities
Tank U.S. Gallons Liters
Wing Left 631 2391
Wing Right 631 2391
Ventral Tank 224 850
Total 1486 5632