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Aviation History
1956
1956 - 1464.PDF
616 THRUST ONE of the fundamental laws of pro-pulsion is that the higher the velocity of a propulsive jet, the greater will be its thrust for a given mass flow. No other jet propulsion prime mover can match the efflux velocity of the rocket and such units can therefore produce very high thrust from a modest compass. Three of the accompanying photographs show various aspects of rocketry. On the left is an unusual and striking view of the contrail of the Canberra test bed for the Napier Scorpion rocket motor. Above is the impressive launching of a Martin Viking research rocket for the U.S. Navy; this vehicle, weighing 1\ tons and powered by a single, 21,100 lb thrust chamber, reached 144 miles altitude. On the right is a "Flight" photograph of a Vickers- Armstrongs Valiant taking off with assis- tance from two de Havilland Super Sprite rocket motors. The final photograph shows a supersonic jet from the after- burner nozzle of the Allison J71 turbojet of a McDonnell F3H-2N Demon.
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