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A speed to fly ring (known as a 'MacCready Ring'), which is fitted around the aircraft's variometer, will indicate the optimum airspeed to fly between thermals for maximum crosscountry performance. The ring is usually calibrated in either knots or meters per second and its markings are based on the aircraft's polar curve. [ 16 ]
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.
Its successor, the MacCready Gossamer Albatross can fly as slow as 9.23 miles per hour (14.85 km/h). [1] It has a maximum speed of 18 miles per hour (29 km/h). [2] The Ruppert Archaeopteryx has a certified stall speed of 30–39 kilometres per hour (19–24 mph). [3] The Vought XF5U can fly as slow as 32 kilometres per hour (20 mph). [4]
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 Two records set, both superseded: 35.82 km straight distance [8] and 2h 49 min Duration.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.
All of the images are spectacular, but the money shot is a surreal photo of the No. 5 fighter jet flying at a very low altitude as it passes above the bridge while cars and pedestrians cross over ...
Lockheed YF-94 (S/N 48-373). This was the second aircraft built (from TF-80C) On 16 April 1949, the first YF-94 prototype performed its maiden flight. [6] To accelerate development, these early test aircraft were converted from existing T-33s; they maintained roughly 75% commonality in terms of components with those used in the earlier F-80 and T-33As.
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]