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  • What exactly is the meaning of detent in aviation?
    A detent is usually a discontinuity in force at a certain position: the control likes to move into that position, and moving it away takes more than average force
  • What is the meaning of flap detent names (e. g. , 10 degrees)?
    The "Degrees" of flap deployment generally refers to the deflection from the neutral (0° - flush with the rest of the wing) position of the flaps For most GA aircraft this is an actual angular measurement - 10° of flaps corresponds to the flaps lowering 10° from their neutral position, but the degree of travel can also be given as a percentage (0-100%) The aircraft's maintenance manual
  • What are autothrust and manual thrust on an A320 (or other aircraft)?
    The PF sets them to a specific detent on the thrust lever range The A THR system provides cues that indicate the energy of the aircraft: • Speed, acceleration, or deceleration, obtained by the speed trend vector • N1, and N1 command on the N1 gauge All these cues are in the flight crew’s direct line of vision
  • What are the various thrust modes in the Airbus A320?
    If the thrust lever is set in a detent, the FADEC selects the rating limit corresponding to this detent (Airbus A320 FCOM - Powerplant - Thrust Control System - Thrust Rating Limit)
  • Why (and how) do aircraft rudders center themselves without input?
    A backward swept hinge line on the vertical tail means that the center of gravity of the rudder will be lowest in the center position, so the rudder will self-center on the ground by gravity alone Still, it is desirable to tailor the force gradient of any control surface such that there is a detent at the center position to give force-feedback to the pilot when the control surface is in its
  • Why is the DC-9-80 (MD-80) prohibited from taking off with a flap . . .
    The crew moves the flap lever to the appropriate detent depending on the flight condition (i e take-off, landing) The flap lever has fixed detents at UP, 0, 11, 15, 28, and 40 The lever can also be positioned in one-degree increments for takeoff settings using the Dial-A-Flap from 0 to 24, except for a small do-not-use range at 14
  • jet engine - How do pilots set the exact amount of thrust needed for a . . .
    The thrust levers had a detent that selected "100%" thrust for the given mode the FADEC is operating in If you pushed the thrust levers past the detent to "max" this would give you extra thrust The mode the FADEC is operating in is selected by a button in the cockpit that cycles through the available modes
  • What does feathering mean and how does it work technically?
    Before I ask "What does Feathering mean when it comes to Jet Propeller Engines" I have to say what I think I know: Feathering jet prop engines mean achieving a sufficient turbine rotation speed at


















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