What is a hypersonic engine?

A hypersonic engine is an engine which helps a vehicle attain hypersonic speeds, i.e. at least Mach 4 – four times the speed of sound. You can read about the Hypersonic Technology Demonstrator Vehicle (HSTDV) – unmanned scramjet technology of DRDO in the given link.

Further readings:

  1. Advanced Technology Vehicle – India, one of the 4 Countries To Develop Scramjet Engine
  2. Reusable Launch Vehicle – Technology Demonstrator (RLV – TD)

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