Aviation Photo #1927362 Mikoyan-Gurevich MiG-21bis - Serbia - Air Force

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    Anton Balakchiev - BGspotters
    Serbia - Air Force
    Mikoyan-Gurevich MiG-21bis
    Mikoyan-Gurevich MiG-21
    Mikoyan-Gurevich MiG-21
    Mikoyan-Gurevich
    17409
    Belgrade - Batajnica
    Serbia
    May 21, 2011
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Photo Added: May 28, 2011

Comments (1)

Anonymous
6 years ago
Check this out (Ref: Wikipedia):

Like many aircraft designed as interceptors, the MiG-21 had a short range. This was not helped by a design defect where the center of gravity shifted rearwards once two-thirds of the fuel had been used. This had the effect of making the plane uncontrollable, resulting in an endurance of only 45 minutes in clean condition. The issue of the short endurance and low fuel capacity of the MiG-21F, PF, PFM, S/SM and M/MF variants—though each had a somewhat greater fuel capacity than its predecessor—led to the development of the MT and SMT variants. These had a range increase of 250 km (155 mi) compared to the MiG-21SM, but at the cost of worsening all other performance figures (such as a lower service ceiling and slower time to altitude).

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