A heading indicator in a small aircraft.HI interior
Vacuum systems using a vacuum pump (left) and a venturi (right)
The heading indicator (HI), also known as a directional gyro[1] (DG) or direction indicator (DI),[2][3][4][5] is a flight instrument used in an aircraft to inform the pilot of the aircraft's heading.
^Grumman F11F Tiger Pilot's Flight Operating Instructions. United States Navy. 1 September 2008. p. 51. ISBN 978-1-935327-46-2. Retrieved 17 February 2022.
^Rotorcraft Flying Handbook FAA-H-8083-21A. Federal Aviation Authority. 2012. p. 12-3.
^Kjellstrom, Bjorn; Elgin, Carina Kjellstrom (9 December 2009). Be Expert with Map and Compass. John Wiley & Sons. p. 73. ISBN 978-0-470-40765-3. Retrieved 17 February 2022.
^Cite error: The named reference Bowditch was invoked but never defined (see the help page).
^"Inside the Cockpit of Amelia Earhart's Vega". airandspace.si.edu. Retrieved 17 February 2022.
The headingindicator (HI), also known as a directional gyro (DG) or direction indicator (DI), is a flight instrument used in an aircraft to inform the...
all jet aircraft), the headingindicator is replaced by a horizontal situation indicator (HSI) which provides the same heading information, but also assists...
indicator (commonly called the HSI) is an aircraft flight instrument normally mounted below the artificial horizon in place of a conventional heading...
The attitude indicator (AI), formerly known as the gyro horizon or artificial horizon, is a flight instrument that informs the pilot of the aircraft orientation...
aircraft's heading; the other part indicates whether the aircraft is in coordinated flight, showing the slip or skid of the turn. The slip indicator is actually...
a gyroscope to spin indefinitely; this led to the first prototype headingindicators, and a rather more complicated device, the gyrocompass. The first...
signal, and provide the heading to the station using a direction indicator. In flight, the ADF's RMI or direction indicator will always point to the...
A course deviation indicator (CDI) is an avionics instrument used in aircraft navigation to determine an aircraft's lateral position in relation to a...
mounted in a transparent baseplate containing a direction-of-travel (DOT) indicator for use in taking bearings directly from a map. Other features found on...
in many cases include some form of headingindicator and ILS/VOR deviation indicators. In many cases an indicator of the engaged and armed autoflight...
Corporation in 1912. The autopilot connected a gyroscopic headingindicator and attitude indicator to hydraulically operated elevators and rudder. (Ailerons...
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monitoring; for details, see flight instruments (specifically the headingindicator) and gyroscopic autopilot. The first, not yet practical, form of gyrocompass...
situation indicator (HSI), developed subsequently to the RMI, is considerably more expensive and complex than a standard VOR indicator but combines heading information...
of climb and descent indicator (RCDI), rate-of-climb indicator, vertical speed indicator (VSI), or vertical velocity indicator (VVI) – is one of the...
The complex electromechanical attitude director indicator (ADI) and horizontal situation indicator (HSI) were the first candidates for replacement by...
instruments, such as the attitude indicator, airspeed indicator, altimeter, headingindicator, and course deviation indicator. A small map called the "inset...
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