The ST-180 Horizontal Situation Indicator (HSI) system combines a magnetically slaved gyroscopic compass with a VOR/Localizer and glideslope display . ... When the aircraft is in turning flight the magnetic sensor provides errors similar to those in a magnetic compass.
How do you read HSI?
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. TO/FROM is indicated by a simple triangular arrowhead pointing to the VOR.
How does a HSI work?
The HSI works by combining a VOR/DME receiver and an electrically-slaved heading indicator . (Not all HSIs are slaved but the HSIs in the Flight Simulator aircraft are.) ... The heading indicator shows the aircraft’s magnetic heading and its green pointer shows the course the pilot has selected.
What is the function of HSI?
HSI is the principal investigative arm of the U.S. Department of Homeland Security, responsible for investigating transnational crime and threats , specifically those criminal organizations that exploit the global infrastructure through which international trade, travel and finance move.
How do you use an HSI?
With the HSI display, the pilot flies the aircraft towards the steering bar until the steering bar moves to the course selector. At that point you’re on the radial, so you turn the aircraft to the desired course.
What is the difference between a standard VOR and HSI?
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.
What is an HSI and how does it work?
The HSI works by combining a VOR/DME receiver and an electrically-slaved heading indicator . (Not all HSIs are slaved but the HSIs in the Flight Simulator aircraft are.) ... The heading indicator shows the aircraft’s magnetic heading and its green pointer shows the course the pilot has selected.
What is slaved gyro?
[′slāvd ′jī·rō mag′ned·ik ′käm·pəs] (navigation) A directional gyro compass with an input from a flux valve to keep the gyro oriented to magnetic north .
What information can the HSI provide?
Horizontal Situation Indicator (HSI) The HSI provides a basic horizontal view of the aircraft’s navigation picture . In the F-15E, it can provide navigation data to selected ground navigation facilities (TACAN or Instrument Landing System (ILS)) or to onboard navigation systems like the Inertial Navigation System (INS).
What is the difference between HSI and CDI?
A standalone CDI (Course Deviation Indicator) is an instrument that shows your deviation from a VOR radial that is selected using the OBS (Omnibearing Selector) knob located on the instrument itself. An HSI (Horizontal Situation Indicator) is an entirely separate instrument that combines a CDI and a heading indicator .
What HSI means?
Homeland Security Investigations (HSI)
Does an HSI reverse sense?
The HSI combines a heading indicator with CDI needles. As long as you tune the front course for the localizer, you won’t get reverse sensing .
How does an HSI eliminate reverse sensing?
Reverse sensing occurs on the back course using standard VOR equipment. With a horizontal situation indicator (HSI) system, reverse sensing is eliminated if it is set appropriately to the front course .
How does a VOR indicator work?
A VOR ground station uses a phased antenna array to send a highly directional signal that rotates clockwise horizontally (as seen from above) 30 times a second. It also sends a 30 Hz reference signal on a subcarrier timed to be in phase with the directional antenna as the latter passes magnetic north.
How does turn and slip indicator work?
The turn indicator is a gyroscopic instrument that works on the principle of precession . ... In the turn coordinator, the gyro is canted 30 degrees from the horizontal so it responds to roll as well as yaw. The display contains hash marks for the pilot’s reference during a turn.
