What does "rotation speed" mean when talking about take-offs?

Is it the minimum speed required for take-off?

http://en.wikipedia.org/wiki/F-15_STOL/MTD

(demonstrated vectored takeoffs with rotation at speeds as low as 42 mph (68 km/h)

4 Answers

Relevance
  • John R
    Lv 7
    7 years ago
    Best Answer

    In a tricycle gear aircraft, it's the speed on the take off roll that you raise the nose. On most aircraft it's a little below the speed actually required to fly.

    If you watch a heavily loaded airliner takeoff, it may take several seconds after rotation, with the plane nose high with only the main gear on the ground, before it leaves the ground.

  • 7 years ago

    the speed when the pilot pitch up the aircraft to get airborne

  • 7 years ago

    Rotation speed is the speed at which you raise the nose during the takeoff. Raising the nose increases the angle of attack of the wings and produces more lift to get you airborne.

    Rotating too early will cause drag and slow down your acceleration. Rotating too late means you are holding the airplane on the ground.

  • 7 years ago

    Rotation speed is the calculated speed at which the nose is raised to something like a 5°–15° nose up pitch attitude to increase lift from the wings and effect liftoff.

    For what it's worth, the term comes from the aircraft rotating about the axis of the main gear.

Still have questions? Get your answers by asking now.