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MacCready Gossamer Albatross
The Gossamer Albatross is a human-powered aircraft built by American aeronautical engineer Dr. Paul B. MacCready's company AeroVironment. On June 12, 1979 it completed a successful crossing of the English Channel to win the second £100,000 (£ today) Kremer prize.
==Design and development==
The aircraft was designed and built by a team led by Paul B. MacCready, a noted American aeronautics engineer, designer, and world soaring champion. ''Gossamer Albatross'' was his second human-powered aircraft, the first being the ''Gossamer Condor'', which had won the first Kremer prize on August 23, 1977 by completing a -long figure-eight course. The second Kremer challenge was then announced as a flight across the English Channel recalling Louis Blériot's crossing of 1909.
The aircraft is of "canard" configuration, using a large horizontal stabilizer forward of the wing in a manner similar to the Wright brothers' successful "Flyer" aircraft and powered using pedals to drive a large two-bladed propeller. The ''Gossamer Albatross'' was constructed using a carbon fiber frame, with the ribs of the wings made with expanded polystyrene; the entire structure was then wrapped in a thin, transparent plastic (mylar aka PET film). The empty mass of the structure was only , although the gross mass for the Channel flight was almost . To maintain the craft in the air it was designed with very long tapering wings (high aspect ratio), like those of a glider, allowing the flight to be undertaken with a minimum of power. In still air the required power was of the order of , though even mild turbulence made this figure rise rapidly.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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