Specifications

[P-51D Mustang]
DCS
EAGLE DYNAMICS
35
Fuel System
The Mustang features two main fuel tanks, one in each wing. The main tanks have a capacity of 92
gallons in each or a total of 184 gallons. An auxiliary 85 gallon tank is installed in the fuselage aft of
the cockpit. There is also provision for carrying two droppable combat tanks on the wing bomb racks.
These are available in 75-gallon and 110-gallon capacities. The total fuel capacity of the aircraft,
including two 110-gallon droppable tanks, is 489 U.S. gallons.
Figure 18: Fuel Selector Valve
The fuel tanks are self-sealing and so are the fuel lines. The auxiliary drop tanks are not self sealing.
Fuel is forced to the carburetor by an engine driven pump at a normal operating pressure of 16-19
PSI. In addition, there is an electrically powered booster pump in each internal tank. The booster
pumps prevent vapor lock at high altitudes, assure sufficient fuel supply under all flight conditions
and, in case of engine driven pump failure, provide enough fuel to the carburetor for normal engine
operation. The droppable tanks do not have a booster pump. However, a constant and controlled
pressure of 5 lbs./sq.in. is maintained within the combat tanks by pressure obtained from a vacuum
pump. This is in addition to the pressure obtained from the main engine fuel pump.