36)The angle of incidence of a wing is an angle formed by lines. Option A. parallel to the chord line and longitudinal axis. Option B. parallel to the chord line and the vertical axis. Option C. parallel to the chord line and the lateral axis 37)The centre of pressure of an aerofoil is located. Option A. 30 - 40% of the chord line forward of the leading edge. Option B. 50% of the chord line back from the leading edge. Option C. 30 - 40% of the chord line back from the leading edge 38)Compressibility effect is. Option A. drag associated with the form of an aircraft. Option B. the increase in total drag of an aerofoil in transonic flight due to the formation of shock waves. Option C. drag associated with the friction of the air over the surface of the aircraft. 39)What is the definition of Angle of Incidence?. Option A. The angle the underside of the mainplane or tailplane makes with the horizontal. Option B. The angle the underside of the mainplane or tailplane makes with the longitudinal datum line. Option C. The angle the chord of the mainplane or tailplane makes with the horizontal. 40)A decrease in incidence toward the wing tip may be provided to. Option A. prevent adverse yaw in a turn. Option B. retain lateral control effectiveness at high angles of attack. Option C. prevent span wise flow in maneuvers.
Posted on: Fri, 14 Mar 2014 08:53:15 +0000
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