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| | Mikoyan-Gurevich MiG-25 - Wikipedia, the free encyclopedia |
 | | The prototype interceptor, Ye-155-P1, took to the air on 9 September 1964. |
 | | The first prototype, which was actually of the reconnaissance variant and designated Ye-155-R1 by the bureau, made its first flight on 6 March 1964. |
 | | Development, which represented a major step forward in Soviet aerodynamics engineering and metallurgy, took several more years to complete, but several of the prototypes, under the cover designation Ye-266, made a series of record-setting flights in 1965, 1966, and 1967. |
| en.wikipedia.org /wiki/Mikoyan-Gurevich_MiG-25 (1316 words) |
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