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 Which of these is used as a high lift device? 

 Which of these is used as a high lift device?  Correct Answer flaps

Concept:

Relatively thin airfoils with low camber generally give low drag at high speeds. Unfortunately, these airfoils also typically have relatively low values of maximum lift coefficient. Most aircraft are equipped with devices that can be used to increase lift when needed, at expense of additional drag. These devices are

  • Flaps
  • Strakes
  • Leading edge Flaps and Slats

Aileron: A movable surface, usually near the trailing edge of a wing, that controls the roll of the airframe or effects maneuvers.

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Rudder: A movable auxiliary airfoil on an airplane usually attached at the rear end that serves to control direction of flight in the horizontal plane

Elevator: An elevator or lift is a vertical transport vehicle that efficiently moves people or goods between floors of a building. They are generally powered by electric motors that either drive traction cables and counterweight systems, or pump hydraulic fluid to raise a cylindrical piston.

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