Definitions for horizontal situation indicator
hor·i·zon·tal sit·u·a·tion in·di·ca·tor

WikipediaRate this definition:0.0 / 0 votes

1. Horizontal situation indicator

   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. This reduces pilot workload by lessening the number of elements in the pilot's instrument scan to the six basic flight instruments. Among other advantages, the HSI offers freedom from the confusion of reverse sensing on an instrument landing system localizer back course approach. As long as the needle is set to the localizer front course, the instrument will indicate whether to fly left or right, in either direction of travel. On the HSI, the aircraft is represented by a schematic figure in the centre of the instrument – the VOR-ILS display is shown in relation to this figure. The heading indicator is usually slaved to a remote compass and the HSI is frequently interconnected with an autopilot capable of following the heading select bug and of executing an ILS approach by following the localizer and glide slope.On a conventional VOR indicator, left–right and to–from must be interpreted in the context of the selected course. When an HSI is tuned to a VOR station, left and right always mean left and right and TO/FROM is indicated by a simple triangular arrowhead pointing to the VOR. If the arrowhead points to the same side as the course selector arrow, it means TO, and if it points behind to the side opposite the course selector, it means FROM. The HSI illustrated here is a type designed for smaller airplanes and is the size of a standard 3 ¼-inch instrument. Airline and jet aircraft HSIs are larger and may include more display elements. The most modern HSI displays are electronic and often integrated with electronic flight instrument systems into so-called "glass cockpit" systems.

WikidataRate this definition:0.0 / 0 votes

1. Horizontal situation indicator

   The horizontal situation indicator is an aircraft instrument normally mounted below the artificial horizon in place of a conventional heading indicator. It combines a heading indicator with a VOR/ILS display, reducing pilot workload by lessening the number of elements in the pilot's instrument scan to the six basic flight instruments. Among other advantages, the HSI offers freedom from the confusion of reverse sensing on a localizer backcourse approach. On a front course approach, the HSI needle is set to the inbound track; on a back course approach, the HSI needle is set to the outbound rather than the inbound track, causing needle deflection that mimics a front course approach instead of displaying the normal reverse sensing. The HSI is also used on spacecraft like the Space Shuttle. On the HSI, the airplane is represented by a schematic figure in the center of the instrument – the VOR/ILS display is shown in relation to this figure. The heading indicator is usually slaved to a remote compass, and the HSI is frequently interconnected with an autopilot capable of executing an approach by following the localizer and glide slope. On a conventional VOR indicator, left/right and to/from must be interpreted in the context of the selected course. When an HSI is tuned to a VOR station, left and right always mean left and right and TO/FROM is indicated by a simple triangular arrowhead pointing to the VOR. If the arrowhead points to the same side as the course selector arrow, it means TO, and if it points behind to the side opposite the course selector, it means FROM. The HSI illustrated here is a type designed for smaller airplanes, and is the size of a standard 3-1/4 inch instrument. Airline and jet aircraft HSIs are larger and may include more display elements. The most modern HSI displays are electronic and often integrated with electronic flight director systems into so-called "glass cockpit" systems.

Dictionary of Military and Associated TermsRate this definition:0.0 / 0 votes

1. horizontal situation indicator

   An instrument which may display bearing and distance to a navigation aid, magnetic heading, track/course and track/course deviation.

How to pronounce horizontal situation indicator?

1. Alex

   US English

   David

   US English

   Mark

   US English

   Daniel

   British

   Libby

   British

   Mia

   British

   Karen

   Australian

   Hayley

   Australian

   Natasha

   Australian

   Veena

   Indian

   Priya

   Indian

   Neerja

   Indian

   Zira

   US English

   Oliver

   British

   Wendy

   British

   Fred

   US English

   Tessa

   South African

How to say horizontal situation indicator in sign language?

Numerology

1. Chaldean Numerology

   The numerical value of horizontal situation indicator in Chaldean Numerology is: 3

2. Pythagorean Numerology

   The numerical value of horizontal situation indicator in Pythagorean Numerology is: 8

References

1. ^ Wikipedia
   https://en.wikipedia.org/wiki/Horizontal_Situation_Indicator
2. ^ Wikidata
   https://www.wikidata.org/w/index.php?search=horizontal situation indicator
3. ^ Dictionary of Military and Associated Terms
   https://www.tradoc.army.mil/wp-content/uploads/2020/10/AD1029823-DOD-Dictionary-of-Military-and-Associated-Terms-2017.pdf