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The horizontal situation indicator (commonly called the HSI) is an aircraft flight instrument normally mounted below the artificial horizon in place of a conventional heading indicator. It combines a heading indicator with a VHF omnidirectional range - instrument landing system (VOR-ILS) display.
A horizontal situation indicator (HSI), developed subsequently to the RMI, is considerably more expensive and complex than a standard VOR indicator but combines heading information with the navigation display in a much more user-friendly format, approximating a simplified moving map.
These include the Horizontal Situation Indicator (HSI) and Attitude Director Indicator (ADI). The HSI combines the magnetic compass with navigation signals and a Glide slope. The navigation information comes from a VOR/Localizer, or GNSS. The ADI is an Attitude Indicator with computer-driven steering bars, a task reliever during instrument flight.
The ADC supplies altitude, airspeed and temperature data, heading data from magnetic sources such as flux valves, heading selected on the Horizontal Situation Indicator (HSI) (or Primary flight display (PFD)/multi-function display (MFD)/ electronic horizontal situation indicator (EHSI)), navigation data from Flight Management System (FMS), VHF ...
The names Electronic Attitude Director Indicator and Electronic Horizontal Situation Indicator are used by some manufacturers. [1] However, a simulated ADI is only the centerpiece of the PFD. Additional information is both superimposed on and arranged around this graphic. Multi-function displays can render a separate navigation display unnecessary.
The captain, therefore, set the left-side horizontal situation indicator (HSI) to 270°, i.e. a due-west course. This heading is clearly inconsistent with a route from Marabá to Belém. After setting the HSI, Garcez programmed the aircraft performance management system (PMS) [13] [14] to
A licensed pilot in his 20s, Arthur Collins led the pioneering development of the Horizontal Situation Indicator (HSI) and other integrated flight instruments that combined in one display the pitch, roll, and yaw attitudes of the aircraft as well as its compass heading. Collins Radio became a world leader in avionics during the 1950s and 1960s.
Indicador de situación horizontal; Usage on ja.wikipedia.org 水平位置指示装置; Usage on ko.wikipedia.org 수평자세 지시계; Usage on sl.wikipedia.org HSI; Usage on sv.wikipedia.org Horizontal situation indicator; Usage on test.wikipedia.org Korean Air Lines Flight 007 alternative theories