Velontra recently tested its hypersonic turbo-ramjet engine for the first time in Purdue University's Zucrow Laboratories in a High Pressure Combustion Lab. Air-breathing hypersonic powerplants are ...

Producers of military jet engines are rolling out new lines of small turbofans, eyeing an expected boom in demand for uncrewed fighter aircraft. US propulsion suppliers Pratt & Whitney (P&W), GE ...