Publicity from the Paresev tested-and-flown hang gliders and the various space contractors sparked interest in the Rogallo-promoted wing design among several tinkerers in order: Thomas H. Later in Australia John Dickenson in mid-1963, set out to build a controllable waterskiing kite/glider as he admitted adapting from a Ryan Aeronautical flex-wing aircraft. Another player in the continuing evolution of the Rogallo wing hang glider was James Hobson whose "Rogallo Hang Glider" was published in 1962 in the Experimental Aircraft Association's magazine Sport Aviation, as well as shown on national USA television in the Lawrence Welk Show. In 1961–1962, aeronautical engineer Barry Palmer foot-launched several versions of a framed Rogallo wing hang glider to continue the recreational and sporting spirit of hang gliding. The trailing edge of the wing – which is not stiffened – allows the wing to twist, and provides aerodynamic stability without the need for a tail (empennage). Flexibility allows the wing to be less susceptible to turbulence and provides a gentler flying experience than a similarly sized rigid-winged aircraft. The Charles Richards design and use of the Rogallo wing in the NASA Paresev project resulted in an assemblage that became the stark template for the standard Rogallo hang-glider wing that would blanket the world of the sport in the early 1970s.īeyond that, the wing is designed to bend and flex in the wind, and so provides favorable dynamics analogous to a spring suspension. Rogallo had more than one patent concerning his finding the due-diligence expansion of his invention involved cylindrical formats, multiple lobes, various stiffenings, various nose angles, etc. The Rogallo wing is most often seen in toy kites, but has been used to construct spacecraft parachutes, sport parachutes, ultralight powered aircraft like the trike and hang gliders. In other words, how it is attached and manipulated determines what type of aircraft it becomes. The wing itself is not a kite, nor can it be characterized as glider or powered aircraft, until the wing is tethered or arranged in a configuration that glides or is powered. The Rogallo wing is a simple and inexpensive flying wing with remarkable properties. Fast subsonic and supersonic Rogallo wings have long, narrow cones. Slow Rogallo wings have wide, shallow cones. Nowadays the term "Rogallo wing" is synonymous with one composed of two partial conic surfaces with both cones pointing forward. Later, the Rogallo wing was the initial choice for the Project Gemini capsule, but development problems ultimately forced its replacement with the parachute. NASA briefly considered the Rogallo wing to replace the traditional round parachute for the Project Mercury capsule during temporary development problems. aerospace manufacturers worked on parachute designs for space capsule recovery. Rogallo wing considered as a candidate recovery system for the Apollo spacecraft NASA research Gemini Rogallo wing during tests at Edwards Air Force Base in August 1964. Selling the Flexi-kite as a toy helped to finance their work and publicize the design. Rogallo and his wife received a patent on a flexible square wing in March 1951. By the end of 1948 they had two working designs using a flexible wing - a kite they called "Flexi-Kite" and a gliding parachute they later referred to as a "paraglider". They could not find official backing for the wing, including at Rogallo's employer National Advisory Committee for Aeronautics (NACA), so they carried out experiments in their own time. He and his wife built and flew kites as a hobby. Rogallo had been interested in the flexible wing since 1945. NASA considered Rogallo's flexible wing as an alternative recovery system for the Mercury and Gemini space capsules, and for possible use in other spacecraft landings, but the idea was dropped from Gemini in 1964 in favor of conventional parachutes. In 1948, Francis Rogallo, a NASA engineer, and his wife Gertrude Rogallo, invented a self-inflating flexible wing they called the Parawing, also known after them as the "Rogallo Wing" and flexible wing. The Rogallo wing is a flexible type of wing. NASA Paresev, a Rogallo flexible wing tested by NASA for spacecraft landing research.
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