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| | FLYING MACHINES - John J. Montgomery |
 | | Montgomery recalled in 1905 that the wing-flapping glider was "the first and only real disappointment in the study." In 1884 he constructed a monoplane glider with curved wing surfaces, in which he made a glide of some considerable length, from Otay Mesa, near San Diego, California. |
 | | Montgomery's second monoplane glider, with flat wings, was built in 1884-85, and featured hinged surfaces at the rear of the wings to maintain lateral balance, thus anticipating ailerons. |
 | | Montgomery's third monoplane glider, constructed in 1886, dispensed with (rather than developed) the ailerons in favor of rocking the wings (which were modeled on turkey buzzard wings), independently or together, to maintain lateral balance as well as to provide pitch control. |
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