Breakthrough Aerospace ENGINE Is GAME-CHANGING

The RBCC, or strutjet as it is sometimes called, is a combination propulsion system that consists of a ramjet, scramjet, and ducted rocket, where all three systems use a shared flow path. It can lead to both hypersonic flight and space acces!

Sources & Credits:

[jtjames]

The rotating detonation engine was solved with a and old analog solution.

The Tesla valveless valve.

[markfischer]

Sandboxx described an engine being developed by GE in collaboration with DARPA and US Air Force Labs. It combines a turbifan for low speeds, a RAMJET, SCRAMJET, and rotary detonation combustion chamber. Rotary detonation is more efficient extending range and power for a given quantity of fuel compared to deflagration, the method currently in use. The rotary detonation combustion chamber can be retrofitted to existing turbofan engines. The combination would provide a smooth transition from 0 to at least Mach 10 and back to 0. The transition from ramjet to scramjet is made by varying the geometry of the intake manifold. Subsonic air flow for Ramjet, supersonic for scramjet. This looks promising for NGAD and FA/XX.

[Pleiades]

I'm so excited to see it being put into application. Since rotating detonation engines have been shown to be demonstrable and not just theory, I see no reason massive R&D shouldn't be flooded into it.

Awesome!

[StevenMatson]

This is an achievable goal, the secret is to use different fuel types for each stage to achieve the needed thrust performance along with YAG based combustion liners for material integrity at each step...

[MF-ogct]

I can see this being used for very specific aircraft, but not airliners. Noise levels would be a significant problem.
Concord was an extremely loud aircraft with 4 low bypass engines, so I see noise as being a problem with this.

[KnightTheKnight]

I don't know about anything; I'm just saying random stuff;
heat; basically, put engine in the center of rocket, make the wing basically radiators with multiple layers with spacing in between the layers, and a high heat conduit metal around the engine, then add a type of coolant, and put motors/pumps inside of these thin layers to make the liquid in the layers travel to the wing and back to the engine, then the air pressure will strip the heat off the wing's holes and possibly cool it and send it back to the engine.

thou it has to be thin the layers, it has to have a solid build; and making the end tip of the wings of each layer basically very thin as if it was a scapple to cut threw air more effective and push the air into the internal layers, so it can bunce around and rapidly cool the radiators wings.

[aspendell]

We have had a multi-mach ramjet (with afterburners) flying fuel tank for over 60 years. Lockheed did pretty exhaustive R&D on engines before they came up with the pinnacle SR-71 Blackbird. I didn't see anything in this presentation that was new since then.

[TheInsaneupsdriver]

Plasma? it's the only thing i could think off that can get the temps up high enough fast enough, but the challenge is to not have it blown out by the airflow but if it could be done there wouldn't be any fuel, or atleast not much and only used to supplement the thrust.

[JimFeig]

Yes everything in software magically works the same in real life.

[BrandonHampton-ko]

Not sure I know anything but I believe that a removable fan slides in and out of the chamber could take off from the ground and in the air the fan will be mechanically slipped out slipped out the side and then they can ignite the Ramjet

[OldCaliboy]

If possible, I would love to finally see a Rocketeer like rocket and then.... we can scale it up or down 😏 🤔. Let's go!

[jimwinchester]

So... the bottom-line is that not much has changed since the P&W J58's used on the A12 and SR71.
Only the spectre of adding a rocket motor seems new. And you'd need a LOT of volume for oxidizer in the fueselage of the aircraft to get to LEO.

[MichaelWinter-sslx]

So it's the material science again, that we are waiting for. Designing the hull for high speeds and atmospheric reentry is next. These heat tiles are not the optimum solution, unless we make a giant ceramic pot;• ehhm, a ceramic hull from one piece. But there could be much simpler propulsion solutions, if we had the neccessary alloys, where the pilot does not sit in a fuel tank with windows.
🚀🏴‍☠️🎸

[eastindiaV]

Operating range:
Hypertension to dislocation

[linyenchin]

Speeds is ONLY a verb, speed is its own single and plural state, the plural of speed is just speed.

[Tillersweep]

Solving this is on my list right after coming up with a successful washer/dryer in the same box.

[tapashnandy]

Slightly unrelated...what do you think is the future of electrical turbine?

[ecash]

2 points...
The higher you go, the farther you have to travel compared to Sea level.
Higher you go you need to bring Oxygen, MORE and MORE..
At 100, 000 feet, you are traveling 19 miles Which equals at sea level 1 mile.
40, 000 feet is 7.5 miles, equal to 1 mile at sea level..
200 mph at 40, 000 will take ABOUT 2.5 minutes. And only get you 1 mile at sea level.

[waynerl]

Let's see how the merely Supersonic Business Jet does its ICAO4 departure.
This certainly will not, leaving the tech in ICAO14 : an EIS for an all new remote facility status.

[timothyblazer]

SSTO? It's really unnecessary. Fuel cost is a very small percentage of a launch. The added complexity and weight of an air breathing engine and control surfaces makes payload capacity less as well.

A two stage with a returning jet stage might make sense though, for small payloads. The aerodynamics would be nasty, but it could be fully reusable. And could launch from nearly anywhere.