Otto Lilienthal was an inventor whose designs and practice led to the first practical what in the 1890s?
Delta wing glider Hang-gliders Hang gliders Hanglider Hang-gliding Delta wing gliders Delta planiste Hanggliding Delta plane Hang glider Deltaplane Hangliders Hang-glider Hangglider Hang Glider Hang Gliding Hang gliding Triangle control frame
delta plane hang glider delta planiste triangle control frame delta wing glider hanglider hanggliding deltaplane hangglider delta wing gliders hangliders hang gliders hang gliding
hang glider
WikipediaEntity
Hang glider