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ISRO accomplishes successful test fire of scramjet engine for satellite launch
Indian space scientists and engineers have achieved yet another land mark in rocket science in the form of a successful testing of scramjet engine for the first time.

It has been reported that the Indian Space Research Organisation (ISRO) has successfully tested its scramjet engine at the Satish Dhawan Space Centre, Sriharikota. The new rocket, usable for the atmospheric phase of the flight took off early morning today with the availability of appropriate wind speed limits.

With the success testing of new engine the satellite launch cost will get cut down appreciably since it will make use of atmospheric oxygen for a part of its flight. It will reduce the rocket load and partly save the cost of liquefied oxidiser that rockets carry for the complete journey into space.

The scramjet engine, used only during the atmospheric phase of the rocket's flight, will help in bringing down the launch cost by reducing the amount of oxidiser to be carried along with the fuel.

A scramjet is, in fact, a supersonic combusting ramjet in which air-breathing by the engine takes place in supersonic airflow itself.  It is the high vehicle speed that forcefully compresses the incoming air before combustion by maintaining supersonic flow of the air throughout the entire jet engine. This provision allows the scramjet to operate efficiently at extremely high speeds unlike ramjet engines.

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