Specifications

DCS

[P-51D Mustang]

COCKPIT

Vacuum System Instruments

Vacuum system instruments are operated by a vacuum pump driven by the engine and include the

Flight Indicator, Bank and Turn Indicator, Directional Gyro, and Suction Gauge.

Flight Indicator

The AN5736 Flight Indicator (Gyro Horizon Indicator) indicates a miniature plane and a gyro-actuated

horizon bar. This instrument is used during instrument flying to indicate the longitudinal and lateral

attitude of the aircraft. The horizon bar will indicate pitch up to 60° and bank up to 100°. The top

needle of the instrument indicates the angle of bank on the bank scale, graduated from 0° to 90°

and scaled to 30°. The cage knob is used to cage the instrument. To operate the cage knob, left-click

on it to pull the knob out and roll the mouse wheel to turn it clockwise to the caged position. To

uncage the instrument, roll the mouse wheel over the knob to turn it counter-clockwise. The horizon

knob is used to adjust the horizon level. To operate the horizon knob, place the mouse over the knob

and roll the mouse wheel to set the horizon higher or lower.

Figure 39: Flight Indicator

Bank and Turn Indicator

The AN5820 bank-and-turn indicator is composed of a gyroscope-type turn indicator and a ball-type

bank (slip) indicator. The bank indicator is a liquid-filled curved tube in which a free-rolling

inclinometer ball changes position according to the direction of the force of gravity and centrifugal

force. The bank indicator is used to minimize side-slip by keeping the ball centered between the

center reference lines while turning. This instrument has no caging knob.

Horizon knob

Aircraft symbol

Artificial horizon

Bank scale

Angle of bank

indicator

Cage knob