单词	sweepback
释义	sweepback /ˈswiːpbak / noun [mass noun] The angle at which an aircraft’s wing is set back from a right angle to the body.The wing sweepback angle varies from 16° to 69°, with respect to the wing leading edge with four outer-wing panel fixed positions of 16°, 35°, 45° and 69°.... Physically, the new wing will have a higher aspect ratio and a more pronounced sweepback angle, allowing for more efficient high-speed cruise performance. The German introduction of the turbojet engine and moderate wing sweepback to improve high-speed flight performance was matched by Allied developments.
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