Francis Rogallo, “Father of Hang Gliding,” Dies At 97
Francis Rogallo, who patented a flexible wing design in 1948 that has been credited with spurring the development of hang gliders, sport parachutes, and ultralights, died at his home in North Carolina on Sept. 1. In the 1950s, Rogallo and his wife, Gertrude, who was credited as co-inventor of the wing, gave their patent to […]