Flight director (aviation)

Flight director (aviation)

In aviation, a flight director is a navigational aid that is overlaid on the Attitude indicator that shows the pilot of an aircraft the attitude required to follow a certain trajectory.

Description

The flight director computes and displays the proper pitch and bank angles required in order for the aircraft to follow a selected path.A simple example: the aircraft is in level flight on a heading of 045 degree and at an altitude of 15000 feet maintaining a speed of 260 kts, the FD bars are thus centered. Then the flight director is set to a new heading of 090 degrees and a new altitude of 20000 feet. The aircraft must thus turn to the right and climb. This is done by rolling to the right and pulling up. The roll bar will deflect to the right and the pitch bar will deflect upwards. The pilot will then pull back on the control column while rolling the aircraft to the right. Once he reaches the proper pitch and bank angle the FD bars will again center and remain centered until it is time to roll back to wings level (when the heading starts to approach 090). When the aircraft approaches 20000 feet the pitch bar will deflect downwards thus commanding the pilot to reduce pitch in order to level off at the new altitude.

The FD is generally used in direct connection with the Autopilot. Where the FD commands the AP to put the aircraft in the attitude necessary to follow a trajectory. The FD/AP combination is typically used in autopilot coupled low instrument approaches, (below 200 feet agl) or CAT II and CAT III ILS instrument approaches.

The exact form of the flight director's display varies with the instrument type either crosshair or command bars.

ee also

* HUD
* Attitude indicator
* Flight instruments


Wikimedia Foundation. 2010.

Игры ⚽ Нужно решить контрольную?

Look at other dictionaries:

  • Flight director — The term flight director can refer to any one of the following:* the flight controller of a space flight * the flight director of an aviation navigation system …   Wikipedia

  • Flight (disambiguation) — Flight may be:* Flight, the process of flyingOther uses: * A route taken by airplanes and other airborne vehicles * In biology, the fight or flight response * An uninterrupted series of steps in a stairway * Flight (opera) , an opera by Jonathan… …   Wikipedia

  • Flight control surfaces — Aircraft flight control surfaces allow a pilot to adjust and control the aircraft s flight attitude.Development of an effective set of flight controls was a critical advance in the development of the aircraft. Early efforts at fixed wing aircraft …   Wikipedia

  • Flight Attendant — Flugbegleiter/ innen sind arbeitsvertraglich zur Freundlichkeit verpflichtet. Flugbegleiter/ in (engl.: flight attendant, früher auch: steward/ ess) ist die Berufsbezeichnung für Servicekräfte in einem Verkehrsflugzeug, die Passagiere auf… …   Deutsch Wikipedia

  • Flight attendant — Flight attendants or cabin crew (historically known as stewards, air hosts/hostesses, or stewardesses) are members of an aircrew employed by airlines to ensure the safety and comfort of the passengers aboard commercial flights as well as on… …   Wikipedia

  • Aviation history — deals with the development of mechanical flight, from the earliest attempts in kite powered and gliding flight, to powered heavier than air flight, and beyond. Humanity s desire to fly possibly first found expression in China, where people flying …   Wikipedia

  • Flight From Glory — Infobox Film name = Flight From Glory image size = caption = director = Lew Landers producer = Robert Sisk writer = Robert Hardy Andrews (story) David Siverstein John Twist starring = Chester Morris Whitney Bourne Onslow Stevens Van Heflin music …   Wikipedia

  • Flash Airlines Flight 604 — Accident summary Date 3 January 2004 …   Wikipedia

  • Delta Air Lines Flight 723 — Accident summary Date July 31, 1973 Type Controlled flight into terrain Site …   Wikipedia

  • Global Aviation Holdings — Global Aviation Holdings. Type Private Industry Transportation Founded February 19, 2009 Headquarters Peachtree City, Georgia, USA Products Airline Services …   Wikipedia

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”