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Books about Rogallo:
Guide to Rogallo Flight: Basic: A Hand Book for Beginning Hang Glider Pilots by Bob Skinner, Rich Finley, Robbie Skinner and John McVey (1974)
Guide to Rogallo Flight Basic : A Hand Book for Beginning Hand Glider Pilots by Bob & Rich Finley Skinner and Robbie Skinner (Jan 1, 1974)
Guide To Rogallo Flight Basic 3ed by SkinnerBob (1974)
Wiki information Rogallo:
The Rogallo wing is a flexible type of airfoil. In 1948, Gertrude Rogallo, and her husband Francis Rogallo, a NASA engineer, invented a self-inflating flexible wing they called the Parawing, also known after them as the "Rogallo Wing" and flexible...
Francis Melvin Rogallo was an American aeronautical engineer inventor born in Sanger, California, U.S.A.; he is credited with the invention of the Rogallo wing, or "flexible wing", a precursor to the modern hang glider and paraglider. His patents...