HSTDV: The Mach 6 Technology Demonstrator That Laid the Foundation for India’s Hypersonic Cruise Missile Programme
The programme was led primarily by the Defence Research and Development Laboratory, or DRDL, in Hyderabad, part of DRDO’s Dr APJ Abdul Kalam Missile Complex. At the heart of HSTDV was an indigenous Supersonic Combustion Ramjet, or scramjet, designed to burn fuel while the airflow passing through its combustion chamber remained supersonic.