LightAircraft GD023

The heading indicator (also known as the directional gyro, or DG; sometimes also called the gyrocompass, though usually not in aviation applications) displays the aircraft's heading with respect to geographical north. Principle of operation is a spinning gyroscope, and is therefore subject to drift errors (called precession) which must be periodically corrected by calibrating the instrument to the magnetic compass.

Features:

• operating voltage: 14 ± 10% V DC
• ambient temperature: -40 - +50 °C
• ambient relative humidity: no more than 95%
• vibration strength: 1.5g

• working range: indicating heading angle within the range of 360°
• accuracy: the drift error is not more than 4°/10 min
• operating current is not more than 0.72A
• rated Rotating speed is 22000 turns per min: it warns when power-off the rotating speed is below 70% of the rate rotating speed
• the insulating resistance between the power and case is not less than 20MΩ