center of lift

For air and water vehicles is as center of lift (English Center of lift) that dot denotes where the dynamic lift forces that raise the vehicle against gravity attack. The distance between the center of mass of the body and the center of lift affect its dynamic behavior generally much or vary the basic construction methods in this aspect.

Examples

  • With a water vehicle stability during the transition to the sliding ( cf. displacement and gliders ) is relevant: The boat may thereby by the ground effect and a far forward -lying center of lift not be unilaterally lifted forward in that it can roll over backwards otherwise.
  • In an aircraft, the center of gravity is in the slow flight important: by lying in front of the center of lift of gravity, it tilts to a stall to the front and so, with sufficient altitude, again accelerated and thus controllable. Gliders approximately be constructed so that they are easily top-heavy, as long as the pilot has an average body weight - lighter pilots must compensate for this by trimming weights in the cockpit. For cargo aircraft, the permissible location of the center of gravity has to be planned by the loadmaster. The disadvantage of this design is that the center of mass lies in front of the center of lift must be balanced by an output on the horizontal stabilizer, which in turn is compensated by a higher lift on the wing. This results in a higher air resistance and thus fuel consumption.
  • Vertical take-off aircraft end: For rotorcraft such as the helicopter center of gravity is always below the rotor plane, which forms the center of lift. For starters Heck, this ratio is reversed, which makes maneuvering in hover. In turn, the two points quadrocopters are close together or at a level which is a rotation rate requires the damping.
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