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WordReference Random House Unabridged Dictionary of American English © 2024Im•mel•mann (im′əl män′, -mən),USA pronunciation n. - Aeronauticsa maneuver in which an airplane makes a half loop, then resumes its normal, level position by making a half roll: used to gain altitude while turning to fly in the opposite direction. Also called Im′melmann turn′.
- after Max Immelmann (1890-1916), German aviator of World War I, who is said to have devised it 1915–20
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