[DUMBGRUNT]

Going to need a monster muffler for this one.

[CTyank]

https://books.google.com/books/about/The_Starship_and_the_Canoe.html?id=oziTGwAACAAJ

[ConservativeMind]

Reminds me of a Jerry Pournelle/Niven book named “Footfall.”

[decal]

Like a cosmic Wankel engine, eh?

[Alas Babylon!]

...Ahmed tells us...

Ahmed? Go ahead and call me racist, but what are his political loyalties when it comes to his religion? Islam Uber Alles?

[Right Wing Assault]

Will China be selling these tomorrow?

[Huskrrrr]

Make sure it wasn’t built by Acme.

[blam]

A UCF team has produced a continuously firing prototype of a H2/O2 rotating detonation engine, capable of running until the fuel is turned off – a feat previously thought impossibleProfessor Kareem Ahmed, University of Central Florida

[Bommer]

“The study presents, for the first time, experimental evidence of a safe and functioning hydrogen and oxygen propellant detonation in a rotating detonation rocket engine,” says Kareem Ahmed, an assistant professor in UCF’s Department of Mechanical and Aerospace Engineering who led the research

Any bets how long Kareem will be keeping it secret before Iran just happens to develop the same engine?

[daniel1212]

So another invention the military lets America’s enemies know they should also focus on.

[marktwain]

Detonation releases significantly more energy from significantly less fuel mass than combustion,

That does not ring true with me. It might release energy *faster* but it seems unlikely to release *more* energy per kilo of fuel and oxidizer.

[Daniel Ramsey]

Should have kept it top secret dumbnuts...

Not a comment directed to the OP..

[21twelve]

“In 2012, the Naval Research Laboratory estimated that rotating detonation engines could save the Navy 15-20 percent off a ~US$2-billion annual fuel bill...

With the price of fuel now, they’ll save $382.

Actually, that is an issue when it comes to developing power plants. Here in the Pacific Northwest there have been lots of places where plans have been developed and studies done to develop low environmental impact small water-powered electrical generation.

But they keep getting shelved and they put up a fairly quick and easy natural-gas plant instead as gas is so cheap. And of course they are hoping that gas will stay cheap for the next 8(?) years or whatever.

[Tallguy]

Cross between a rocket motor and a scram-jet. Note the “string of diamonds” shockwave in the exhaust.