heading indicator

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heading indicator

An instrument which displays heading transmitted electrically from a remote compass system.
References in periodicals archive ?
Without a nav or GPS interface, think of the G5 simply as a digital directional gyro with heading reminder, plus there is a data field at the top of the display showing current heading.
NASDAQ: GRMN), has announced the approval of the G5 electronic flight instrument for installation as a replacement directional gyro (DG) or horizontal situation indicator (HSI) in type-certificated fixed-wing general aviation aircraft, the company said.
We were still IMC, had unreliable radios and appeared to have lost our directional gyro.
Simply put, think of an HSI as a directional gyro with a course deviation indicator mounted on the compass card.
Tenders are invited for Manufacture And Supply Of Se-Ts-Dg Test Bench For Directional Gyro
Additionally, the system enables directional gyro mode operation, which minimizes magnetic compass errors.
Two of these navigational aids are the Gyro Horizon Indicator and the Directional Gyro Indicator, designed by Sperry and built by Sperry and Fisher Body.
The directional gyro, which has a horizontal spin axis, measures yaw rate.
Utilizing these highly accurate data sensors along with a Directional Gyro (DG) mode the IMSU features 7 degrees per hour heading stability without use of external magnetometers.
Mechanical versions of the artificial horizon or directional gyro slowly are being replaced with more-reliable electronic implementations, but there's still a bunch of aircraft flying around with what is a quaint technology: vacuum-driven instruments.
My vacuum directional gyro was replaced once due to excessive precession and will need to be replaced again soon.
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