By Dr. V. Babu, Professor,
Department of Mechanical Engineering,
Indian Institute of Technology Madras, Chennai, India
Conventional jet engines use a turbine-driven compressor to compress air prior to combustion of fuel. The exhaust from the combustion drives the turbine and creates thrust from the nozzle to propel the plane. Ramjet engines replace the compressor with a specially shaped duct, open at the front, that uses the forward motion of the aircraft to compress air. No moving parts are required in a ramjet.
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