Sunday, October 06, 2024

Rotating detonation ramjet engine for hypersonic speeds to fly in 2025

Amazing stuff! Will civil aviation be taken to the next level? What is the boom, if any?

"... A case in point is Venus Aerospace's new Venus Detonation Ramjet 2000 lb Thrust Engine (VDR2). ...

Unveiled at the recent Up.Summit in Bentonville, Arkansas the VDR2 looks ridiculously simple in a cutaway view because it's essentially an empty tube without moving parts. This is because it's mainly a ramjet, where the incoming air is compressed by the speed of the engine moving forward instead of by spinning turbine blades as in a conventional jet engine. ...

The VDR2 takes things a step further by incorporating a Rotating Detonation Rocket Engine (RDRE), which overcomes the limitations of a rocket or jet engine by using another novel principle – again, with no moving parts. The RDRE part of the VDR2 consists of two coaxial cylinders with a gap between them. A fuel/oxidizer mixture is squirted into the gap and ignited. The next step is a bit tricky, but if the detonation is configured properly, this generates a closely coupled reaction and shock wave that speeds around inside the gap at supersonic velocity that generates more heat and pressure. ...

It has the high thrust and efficiency needed to power an aircraft to speeds of up to Mach 6 and an altitude of 170,000 ft (52,000 m) [conventional civil aviation planes fly at about 9,000-12,000 meter altitude] and is 15% more efficient than conventional engines, if Venus Aerospace meets its current design goals. ...

The VDR2 is expected to make its first test flight in a test drone next year."

Rotating detonation ramjet engine for hypersonic speeds to fly in 2025

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