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They both noticed, Pirie by direct argument and Dewing with mathematics, that the solution involved adding the average rate of climb in the thermal to the instantaneous rate of sink being experienced in the glide in order to find the corresponding best speed to fly. [11] Karl Nickel and Paul MacCready published separate articles (in German ...
Paul Beattie MacCready Jr. (September 25, 1925 – August 28, 2007) was an American aeronautical engineer. He was the founder of AeroVironment and the designer of the human-powered aircraft that won the first Kremer prize .
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 1-mile (1.6 km)-long figure-eight course.
Although slow, cruising at only 11 mph (18 km/h), it achieved that speed with only 0.35 hp (0.26 kW). [20] The second Kremer prize of £100,000 was won on June 12, 1979, again by Paul MacCready, when Bryan Allen flew MacCready's Gossamer Albatross from England to France: a straight distance of 35.82 km (22 miles 453 yards) in 2 hours, 49 minutes.
The first Kremer prize of £50,000 was won on 23 August 1977 by Dr. Paul MacCready when his Gossamer Condor, piloted by Bryan Allen, was the first human-powered aircraft to fly a figure eight around two markers one half mile apart, starting and ending the course at least 10 feet (3.0 m) above the ground. [3]
Paul MacCready Jr. & Peter Lissaman: Kremer Prize for first cross-channel flight, 12 June 1979. Two records set, both superseded: 35.82 km straight distance [8] and 2h 49 min Duration. [9] Gossamer Condor (Pasadena version) USA: 1976: Paul MacCready Jr. & Peter Lissaman: One short hop only, in the car park of the Pasadena Rose Bowl.
The first version, known by MacCready as the Pasadena version, was a proof-of-concept aircraft which flew only once, in the parking lot of the Rose Bowl in Pasadena. The first aircraft carrying the name Gossamer Condor was known as the Mojave version , without pilot fairings and other niceties, flown at Mojave airport by MacCready's sons on 26 ...
In 1954, Paul MacCready wrote about a sinking speed correction for a total energy venturi. MacCready stated, "In still air...a glider has a different sinking speed at each airspeed...it would be nicer if the variometer automatically added the sink rate, and thus showed the vertical air motion instead of the vertical glider motion.