Specifications

[P-51D Mustang]
DCS
EAGLE DYNAMICS
65
Engine Instruments
The engine instruments include the Manifold Pressure Indicator, Tachometer, Carburetor Air
Temperature Indicator, Coolant Temperature Indicator, and the Engine Gauge.
Manifold Pressure Indicator
The Manifold Pressure Indicator is used to set the desired engine power setting by adjusting the
throttle. As the throttle handle is moved forward, a throttle butterfly opens and allows more air to
flow through the carburetor to be compressed by the supercharger and delivered to the manifold for
combustion in the cylinders.
The Type D-10 Manifold Pressure Indicator is a vaporproof, absolute-pressure instrument. The gauge
measures pressure in inches of mercury (inHg) and is graduated from 10 to 75 inHg. The face is
scaled to 1 inHg. The green range indicates the normal operating range of 26-36 inHg. The Red Line
indicates full military power of 61 inHg. When running in War Emergency Power, the manifold
pressure can be increased to a maximum of 67 inHg.
Figure 46: Manifold Pressure Indicator
Tachometer
The Tachometer provides remote indication of engine speed. The instrument is graduated from 0 to
4500 and indicates engine speed as Revolutions Per Minute (RPM) in hundreds of RPM. The face is
scaled to 100 RPM throughout. The green range indicates normal operating RPM of 1600 - 2400. The
Red Line indicates maximum normal RPM of 3000.