Yakovlev Yak-25 (1947)
Encyclopedia : Y : YA : YAK : Yakovlev Yak-25 (1947)
Yakovlev Yak-25 was an early turbojet-powered interceptor aircraft designed by the Yakovlev OKB. The designation was later reused for a different interceptor design. See Yakovlev Yak-25. Designation Yak-30 initially applied to a swept-wing version of Yak-25 was also reused for a jet trainer. See Yakovlev Yak-30.
Development
Yak-25 was an early post-World War II design. Typical of the aircraft of its time, it had a straight wing and bulbous fuselage with round cross-section to accommodate the large centrifugal-flow turbojet engine. The aircraft first flew on October 31, 1947. Despite the successful test flight program and good performance, the project was cancelled in 1948 because the more advanced Mikoyan-Gurevich MiG-15 was entering production.Variants
Although the straight-winged Yak-25 was cancelled, Yakovlev OKB attempted to further developed the design by fitting it with a 35° swept wing. The resulting aircraft, called Yak-30, first flew on September 4, 1948. During testing, it reached a speed of Mach 0.935 in a dive. The aircraft's top speed was increased by 40 km/h (25 mph) and service ceiling was increased by 1,000 m (3,280 ft) compared to its predecessor. However, the swept wing was found to be unsatisfactory with poor aileron authority. Like Yak-25, the aircraft did not enter production because MiG-15 was superior and Lavochkin La-15 also powered by the RD-500 engine was already in production. The Yak-30 designation was later reused for a jet trainer.Specifications (Yak-25)
Related content
From Wikipedia, the Free Encyclopedia. Original article here. Support Wikipedia by contributing or donating.
All text is available under the terms of the GNU Free Documentation License See Wikipedia Copyrights for details.