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Ragnar wrote in message ... snipped generally acurrate stuff Its an interceptor, which is what the F-15 was also designed to be. Recce models of the 25 came AFTER. Err... yes and no, equaly distributed. According to the Deputy of the Chief Constructor Valentin Aleksandrovich Stepanov, official history of MiG-25 design is: - 1959, research for a FIGHTER capable to intercept A-12; - 1960, general design solution ; - 1961, March 10-A.I. Mikoyan reported about -starting- of the design prototype E-155; - 1962, Mockup commision assembled for RECONNAISSANCE version; - 1963, December-very first prototype brought out from the factory; - 1964, MARCH 6-first flight of the RECONNAISSANCE prototype (E-155R-1) by Alexandar Fedotov. - 1964, SEPTEMBER 9-first flight of the FIGHTER prototype (E-155P-1). Now, having in mind that there were no major -aerodynamical- changes in MiG-25P/R, the "mockup" commision, probably, mainly had to deal with arrangement of the nose-installed equipment while the prototype was in construction-maybe even more for the convenience of the flight test equipment placement in the "steel" nose of R version. Both were tested for flight performance (needed for a fighter) and modified accordingly-the aerodynamic/mechanical flaws were the same on the both version. The installation of "Smerch" fighter radar was known from Tu-128 "Fiddler" and MiG YE-151/152 prototypes and I speculate it was a "no big deal" to build a "functional" fighter prototype (or at least with ballast and test equipment), but when the R-60 test missilet firing begun, the thrust/exaust and assymetrical load when that huge and hevy missile(s) was fired created flight problems. To rectify this, automatic compensation of the tail surfaces was added on a fighter prototype-which was probably retained on both serial fighter and recce versions (since the simmilar compensation is needed for a bomb dropping on RB version. So, MiG-25 was designed to be a fighter, but a -recconnaissance- prototype flew first! Nele NULLA ROSA SINE SPINA |
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