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Ball-Bartoe Jetwing used for blown-wing research. Note the "augmentor", intended to direct the discharged airflow over the wingWilliams [8] states some flap blowing tests were done at the Royal Aircraft Establishment before the Second World War, and that extensive tests were done during the war in Germany including flight tests with Arado Ar 232, Dornier Do 24 and Messerschmitt Bf 109 aircraft.
Powered high-lift systems generally use airflow from the engine to shape the flow of air over the wing, replacing or modifying the action of the flaps. Blown flaps take "bleed air" from the jet engine's compressor or engine exhaust and blow it over the rear upper surface of the wing and flap, re-energising the boundary layer and allowing the ...
The Hunting H.126 is an experimental aircraft that was designed and built by British aviation company Hunting Aircraft.. The aircraft was developed in order to test the performance of blown flaps, which were commonly known in Britain as "jet flaps", At the time, they were a relatively unknown quantity, thus the Ministry of Aviation issued Specification ER.189D for an appropriate research ...
A flap is a high-lift device used to reduce the stalling speed of an aircraft wing at a given weight. Flaps are usually mounted on the wing trailing edges of a fixed-wing aircraft. Flaps are used to reduce the take-off distance and the landing distance. Flaps also cause an increase in drag so they are retracted when not needed.
The MAI Foton was an experimental Czech research aircraft created to test a blown flap system. [ 1 ] [ 2 ] The aircraft featured no ailerons , instead using two small engines under the wing roots for roll control.
The YC-15 prototype was the first jet powered aircraft to use externally blown flaps. [3] For later prototypes, there were several modifications including a computer on the YC-15 was devised that would calculate the best flap angle for various flight conditions given the current gross weight.
A circulation control wing (CCW) is a form of high-lift device for use on the main wing of an aircraft to increase the maximum lift coefficient and reduce the stalling speed. CCW technology has been in the research and development phase for over sixty years. Blown flaps were an early example of CCW. [1]
More uniquely, it incorporates a fifth turboshaft engine inside of the wing center-section solely to provide air for powerful blown flaps. The addition of these two systems gives the aircraft an impressive STOL capability. A Coandă engine (items 3,6–8) replaces the tail rotor in the NOTAR helicopter. 1 Air intake. 2 Variable pitch fan.
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