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
deltaplane hanglider delta wing gliders hang gliding hangliders hang glider triangle control frame hang gliders hangglider delta planiste delta wing glider delta plane hanggliding
hang glider
WikipediaEntity
Hang glider