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No. 21659
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Lord, love a Leduc!
Designed by René Leduc in 1938, it was built at the Breguet Aviation factory after a protracted, semi-secret construction phase kept at arm's length from German occupation authorities, and was finally completed in 1947. The aircraft featured a double-walled fuselage, with the pilot controlling the aircraft from within the inner shell. The circular gap between this and the outer, cylindrical shell provided the inlet for the ramjet.
Testing: It could not take off unassisted (ramjets cannot produce thrust at zero airspeed and thus cannot move an aircraft from a standstill) and was therefore intended to be carried aloft by a Sud-Est Languedoc mothership and released at altitude. Following test flights of the Languedoc/0.10 composite, independent unpowered gliding tests began in October 1947. After three such flights, the first powered flight was made on 21 April 1949 over Toulouse. Released in a shallow dive at an altitude of 3,050 m (10,010 ft), the engine was tested at half power for twelve minutes, propelling the aircraft to 680 km/h (420 mph).
In subsequent tests, the 0.10 reached a top speed of Mach 0.85 and demonstrated the viability of the ramjet as an aviation powerplant, with a rate of climb of 40 m/s (7,900 ft/min) to 11,000 metres (36,000 ft), exceeding that of the best jet fighters of the time.
Of the two 0.10s originally built, one was destroyed in a crash in 1951 and the other severely damaged in another crash the following year. Both pilots survived with serious injuries. https://en.wikipedia.org/wiki/Leduc_0.10
- French Leduc 0.10 1949 ramjet interceptor carried by a Sud-Est Languedoc mothership.
A piloted ramjet, first flown in powered flight on April 21st 1949. As a ramjet needs forward speed to operate, it was carried aloft by a Sud-Est Languedoc mothership and released at altitude. In flight testing, it reached speeds as high as M=.85. On display in the Musee de l'Air et de l'Espace. Of the two names on the aircraft, Rene Lorin was the inventor of the ramjet and Jean Villey published the detailed theory of the ramjet. http://www.airliners.net/photo/Leduc-010/1492573/L/
http://www.operatorchan.org/v/res/14172.html#14221
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