Уточнение: не 25 (память подвела), а 29%... ВОт отсюда:Сообщение от wind
Цитата: "TheF-22’s Fuel Fraction is insufficient for pragmatic supersonic cruise missions.
Fuel Fraction, the weight of the fuel divided by the weight of the aircraft at take-off, impacts cruise-range, be it super or subsonic. At today’s state of the art, fuel fractions of 29 percent and below yield subcruisers; 33 percent provides a quasi–supercruiser; and 35 percent and above provides useful missions. The F–22’s fuel fraction is 29 percent equal to those of the subcruising F–4s, F–15s and the Russian MiG-21, Flanker. The Russian medium range supersonic cruise interceptor, the MiG-31 Foxhound, has a fuel fraction of over 45 percent. Supersonic cruise fighters require higher fuel fractions since they must have excessive wing for effective subsonic maneuvering". http://www.d-n-i.net/fcs/doc/riccioni_paper.doc
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