India successfully tested an indigenously-developed hypersonic technology demonstrator vehicle (HSTDV) powered by a scramjet (supersonic-combustion ramjet) engine on September 07, 2020. This test is an essential step towards building next-generation hypersonic cruise missiles. The Defence Research and Development Organisation (DRDO)  achieved a significant technological achievement when it flew a cruise vehicle at a hypersonic speed of Mach 6, for 20 seconds.

Understanding the Technology

The latest Sukhoi T-50 prototype – PAK-FA – a twin-engine fifth-generation stealth jet fighter aborted a takeoff at the recently held MAKS Air Show outside Moscow on 21 August 2011 after four days of successful demo flights. While two prototypes of PAK-FA have cumulatively made 48 flights since 29 January 2010, it will be important to know the reasons of this mishap.