Specifications

DCS
[P-51D Mustang]
46
AIRCRAFT OVERVIEW
25,000
6.0
4.9
12.6
20,000
7.1
3.3
9.0
15,000
8.1
2.7
9.0
10,000
10.2
2.1
9.0
As an aircraft ascends to high altitudes where the temperature is normally quite low, the oxygen
cylinders become chilled. As the cylinders become colder, the oxygen gauge pressure is reduced,
sometimes rather rapidly. With a 100°F decrease in temperature in the cylinders, the gauge pressure
can be expected to drop by 20%. This rapid fall in pressure is not a cause for alarm. All of the
oxygen remain in place and as the aircraft descends to lower altitude, the pressure will tend to rise
again. A rapid fall in oxygen pressure while the aircraft is in level flight, or while it is descending, is
not normal and should be considered an indication of a leakage or loss of oxygen.
Environmental Systems
Warm air for heating the cockpit and for defrosting the windshield is conducted from a port in the
dome aft of the coolant radiator through a flexible duct to a point behind the pilot's seat. The air then
passes to the cockpit hot air outlet valve at the left side in front of the pilot's seat. From the defroster
valve, warm air is conducted to a distributor fitting, to which windshield defroster tubes are attached.
The two valves are of the gate type. A pointer attached to the valve handle indicates the position of
the gate.
Air for cooling and venting the cockpit is diverted by a scoop above the forward part of the radiator
scoop and conducted through a flexible tube to a valve behind the pilot's seat. Two smaller flexible
tubes attached to the valve conduct the cool air to the outlets located behind and on each side of the
pilot's seat just below the canopy line. The valve is controlled by a handle on the floor in front of the
right side of the pilot's seat.
Radio Equipment
The radio equipment of the P-51D consists of a SCR-522 VHF (Very High Frequency) radio for voice
communication and radio homing, a Detrola LF (Low Frequency) radio receiver, an AN/APS-13 rear-
warning radar, and an SCR-695A IFF (Identification Friend or Foe) radio.
All radio equipment is stored in the fuselage aft of the cockpit. Controls are grouped on the right side
of the cockpit. Each set has a dedicated antenna arrangement: the VHF antenna mast extends
vertically above the fuselage aft of the cockpit, the Detrola wire antenna runs from the back armor
plate to the top of the fin, the AN/APS-13 antenna rods extend horizontally from the sides of the fin,
and the IFF antennae project from the undersides of the wings.