A Secret Russian Plane T-25 Hells Reaper

Work on the preliminary selection of parameters of a special-purpose assault aircraft was started on the arrest together with the Institute of Theoretical and Applied Mechanics of the Siberian Branch USSR Academy of Sciences on the basis of the decision of the Presidium From July 17 , 1969, theoretical and experimental studies have shown that supersonic aircraft existing schemes and sizes could create shock waves with a pressure drop of 500 + when flying at supersonic speed at altitudes of 30-50 m 1,000 kg per square meter
a Secret Russian Plane T-25 Hells Reaper