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@kbeasley72

4 ай бұрын

Can this engine be used to get to space or low orbit?

@geraldmarshall22

4 ай бұрын

😊

@lanecole-jc4pm

4 ай бұрын

Great news about GEs rotating ignition, I still don't know how it works

@steveshoemaker6347

4 ай бұрын

We know that its already in use don't we.....Thanks Alex🇺🇸 for all of your excellent research that goes into your fine videos......... Merry Christmas to you and yours...

@thehobbyguy7089

4 ай бұрын

From the Movie Stealth: "The Talon is capable of hypersonic flight with two combined Pulse Detonation/Scramjet engines." Science fiction has become reality.

Does anyone else think it's funny how turbo fans are mechanically complex but the easiest to make them work whereas scramjets are just a tube but are incredibly hard to make them work?

@zspud21

4 ай бұрын

Toob

@hussarguitar

4 ай бұрын

This is a great illustration of the difference between simple and easy. It also shows that just because something is simple doesn't mean it's easy.

@merlesmith6794

4 ай бұрын

Then think about how complex a piston engine is and how much gearing and machining is required to create “power”.

@rokadamlje5365

4 ай бұрын

More like, mechanics makes it possible to control the air. Scramjet is too hot for mechanics. Well thats my view.

@kurtwinslow2670

4 ай бұрын

@@rokadamlje5365 I think your correct metallurgy is limited by temperature and pressure.

This makes me really appreciate how truely advanced, for its time, the SR-71s J58 engine was.

@RealKlausSchwab

4 ай бұрын

💯 % They were designing jet engines that utilize the nose cone shock waves to work properly in a fuselage so advanced it was inadvertently stealthy... in the fifties while writing and designing on pen and paper with a straight edge for reference. Absolutely amazing.

@ronkreed

4 ай бұрын

I appreciate the same thing.

@frankmcgowan9457

4 ай бұрын

Slide rules...

@amazin7006

4 ай бұрын

It was advanced, but just for some perspective, a single F22 F119 engine produces 10,000 pounds more thrust, or about 40% more while weighing 2000 pounds less or about 35% lighter.

@sundhaug92

4 ай бұрын

@@amazin7006 The complexity of the J58 came from how big the speed-range it had to deal with was

The biggest hurdle is going to be finding an acronym for the fancy dual mode rotating detonation turbo fanjet thingy.

@zsigmondfeher4624

4 ай бұрын

Yes lol😂

@YmusAnon

4 ай бұрын

Dmrdj

@vanguard9067

4 ай бұрын

FanScramDetJet. There, done:-)

@rustymustard7798

4 ай бұрын

@@vanguard9067 It doesn't count because you didn't spend $20 million tax dollars to create it. Also it makes too much sense.

@johnle6982

4 ай бұрын

Where is the rotating moniker?

To quote Perun: “When most have to chose an option, the US (and GE) just says yes.”

As a 74 year old geezer, much of this video zooms over my dome at hypersonic speed! Still an interesting presentation! Thanks.😵‍💫

@Tam0de

4 ай бұрын

Hey, you were once a strapping young man at some point. And we'll all get to where you are at some point. It's all a matter of time!

@chipsawdust5816

4 ай бұрын

I'm 65 but have been in the aviation business for over 2/3 of that time so I got a bit more of it...maybe!

This sounds like the aviation equivalent of cars going from carburetters to direct fuel injection 👍

@jayantadebnath781

4 ай бұрын

I still use carburetor for the Cessna 172 I fly.

@n111254789

4 ай бұрын

Yeah, people in developing nations still plow fields using horses too we ain't saying it don't work just saying there is distinct technological leaps and this is one of em'

@vanguard9067

4 ай бұрын

Maybe add transition from low-compression flathead to high-compression dual OHC too.

@vanguard9067

4 ай бұрын

@@n111254789a leap for sure.

@helldad4689

4 ай бұрын

Honestly it might be even bigger. Like if fuel injection, turbochargers, and hybrid powertrains all dropped at the same time. If they can get it working reliably enough for military use, it might be able to power the atmospheric leg of an SSTO spaceplane launch. That's probably a few generations away though.

NASA just fired a RDRE for over 4 minutes. That's more than enough for a rocket stage.

@vanguard9067

4 ай бұрын

I wonder at what altitude you need to BYOO (Bring Your Own Oxidizer)

@Hebdomad7

4 ай бұрын

​@@vanguard9067depends on how fast you're going.

@w8stral

4 ай бұрын

For rockets RDRE makes 100% sense as they need the TIME quotient of thrust to be longer as the time component is squared while the acceleration component is linear and ALSO allows them to have a larger throttle envelope which currently is severely lacking in rocket motors. This is not true in current turbine designs. Maybe it is for scramjets(I do not know, not something I have studied, but varying the opening size would seem to be a fairly effective throttle) Rockets can squeeze the oxygen, but its combustion chamber is fixed in volume whereas in a turboscramjet it is not as limiting factor is fuel in a small volumetric area already.

@vanguard9067

4 ай бұрын

@@Hebdomad7 there must be some maximum altitude where there is is insufficient oxygen to support sufficient combustion to maintain thrust. Thinking specifically about the comment about using the engine as a rocket stage.

@fxarts9755

4 ай бұрын

@@vanguard9067 the RDRE that nasa tested was a rocket engine with oxidizer. so they work outside the atmosphere. ngl i never heared of rdre in the sense of a normal air breathing jet engine

This was an excellently created video, and I appreciate how you walked through all the technologies like we never heard them before to really grasp how big of a deal this is

@jayl878

4 ай бұрын

It really is a good video. I had to rewind a couple of parts a couple of times to ensure I understood it. I have a grasp on it now. Thank you for the great descriptions and graphics to illustrate a complex subject in a more simple way.

And Kitty Hawk was only 120 years ago.. amazing technological advancements since then. I really appreciate the clear and concise explanations you give in "layman understandable" language... Bravo Zulu

@jamesholden5664

Ай бұрын

I'm sure the chineese appreciate the clear and concise explanation to.

@philatwood2086

Ай бұрын

If this info was released to OUR public, there is no way China hadn't been aware of the tech already. It's not a secret.. it's not so much how something works as much as can it be built.

I think the major engineering problem is building an aircraft that can handle high Mach speeds. What materials can handle the heat. All the liquids on the SR-71 were preheated and specially formulated. Especially the fuel, which was also used for cooling. Weapons may be feasible, something that is 1 time use, but something that's going to last long enough to be financially feasible is going to be rough

@Boomkokogamez

4 ай бұрын

Well, Sr-71 use tech from 1960s. A lot has advanced since then. So it shouldn't really be a problem.

@RAWDEAL064

4 ай бұрын

I think this will be more useful, and subsequently pushed harder, for unmanned craft

@enginerdy

4 ай бұрын

“financially feasible”

@joebeach7759

4 ай бұрын

@@enginerdy nothing is "financially feasible " then you're 32 trillion in the hole.

@chipsawdust5816

4 ай бұрын

I vote for ceramic leading edges.

🎯 Key Takeaways for quick navigation: 03:09 🚀 *GE Aerospace has achieved a Hypersonic dual-mode Ramjet test with rotating detonation combustion, a breakthrough in propulsion technology.* 05:41 ⚙️ *GE aims to integrate four different engine technologies (turbofans, ramjets, scramjets, rotating detonation combustion) into a single combined system for Hypersonic flight.* 07:43 🛫 *GE's dual-mode Ramjet with rotating detonation combustion may overcome the velocity gap challenge, allowing efficient operation at speeds below Mach 3 and above Mach 2.* 12:20 💡 *Rotating detonation combustion offers greater efficiency in ignition, potentially leading to smaller, more fuel-efficient engines for Hypersonic aircraft.* 23:07 📆 *GE expects to demonstrate the rotating detonation combustion dual-mode Ramjet by 2024, with potential applications in Hypersonic reconnaissance planes or precision strike platforms.* 24:34 💥 *The U.S. publicly commits to non-nuclear Hypersonic weapons, focusing on conventional systems for immediate use, raising questions about the cost-effectiveness of $100 million missiles.* 25:00 🔄 *Reusable Hypersonic aircraft capable of delivering conventional munitions, collecting intelligence, and returning for another mission could shift the cost-benefit ratio and make Hypersonic speeds part of day-to-day operations.* 25:27 🌐 *The exact timeline for the deployment of such technology is uncertain, but breakthroughs like GE's rotating detonation combustion engine suggest that the day of practical, reusable Hypersonic aircraft is inevitable and closer than anticipated.* Made with HARPA AI

Just FYI, the great thing about a rotation detonation engine is that they work both in space and air. In space, for the RDE to work, you just need to carry liquid oxygen with you. You can throw LOX into an RDE and continue to fly with no problem.

YESSSSS! I’ve been waiting excitedly to hear more about RDEs for so long! They always seemed like they had such huge potential

Thanks for covering this, Alex. Love your videos!

Some of your best content yet bro. Love the Deep dive on each part of the motor

Another great and informative video Alex, thank you for that. Hope you feel better soon and have a great holiday.

It took a while, but GE collaborating with Honda on the Honda Jet, has finally brought us a VTEC jet engine 🤣

@jlehm

4 ай бұрын

Looked more like the passport20 to me.

Thank you Sir, this was by far the most exciting break through to ponder the US's continued dominance of the sky.

@Aaron-zu3xn

4 ай бұрын

now think of it on a missile welcome to the Sentinel program the ICBM of the future

@nineofnine

4 ай бұрын

Spoken like a true Alpha country.

@tropicthndr

4 ай бұрын

Now if we could just produce some dominance over the southern border before our country turns to sht, all this would be worth while.

@codprawn

4 ай бұрын

China has more advanced than this apparently. Also look at the British Reaction Engines Sabre. Getting a lot of interest from the US. Be nice if we had got a mention.

@HTV-2_Hypersonic_Glide_Vehicle

4 ай бұрын

​@@codprawn how so?

I watched the test-firing of the rotation, detonation engine the other day. It looks a lot better than when I first heard of the engine. From seconds to now minutes.

Alex, your reporting and videos are simply “next level”! Please keep it up and great work!!

Makes me glad I have an interview with GE next week

@vanguard9067

4 ай бұрын

Good luck with the interview!

@daveyhansen

4 ай бұрын

Shine your shoes.

@philtorrez4198

4 ай бұрын

Hope you have a nice tie!

@daveyhansen

4 ай бұрын

Shoes are most important. It is what people judger you on first, so I am told. Maybe a nice neck tatoo that says "Ram This" would help.@@philtorrez4198

@MrTmenzo

Ай бұрын

Washing machine department 😜

Loved todays intro track and a great show as always.

Been a while since ive watched Sandboxx. Im always left impressed at the delivery and ability to make an interested layman such as myself grasp whats being covered. Well done....as always.

I really enjoyed this one Alex. Nice work. Merry Christmas to you and your family and I hope you all start feeling better real soon.

You are great at explaining very complicated subjects in an understandable manner. Merry Christmas

@beingsentient

4 ай бұрын

No he isn't. He never explains what rotating detonation really is.

This was so well explained that I’m sharing it with my USAFA FB group. Hopefully it gets in front of the cadets so they understand the tech they will be flying soon. 👏

This was an excellent video both in information density and respect for the viewers time. AND you're unwell. Appreciate your efforts. Merry Christmas Alex.

Absolutely incredible presentation. I learned a huge amount about what is being developed in aircraft engines today. I see why you are such a valued channel. thanks so much for all your work and your expertise of presenting that information.

This is a legitimate great press + engineering synopses. -Aerospace Engineer

An engine such as this has very limited application. The reason is the hypersonic flight envelope is very restricted. The faster you go, the more ballistic your flight path has to get. You have to go very high to avoid the extreme air-frame heating and when you do that, your stall speed approaches your cruise speed. The U2 and the SR-71 both had this issue. The A-12 took 150 miles and about 4 minutes to make a 180 degree turn. For Vietnam and Laos, the A12 and SR-71 could take off from Kadena, fly over Vietnam and Laos, descend and turn over Thailand, Climb back to 79,000, cross back over Laos and Vietnam and return to Kadena. While we could do this in the middle east, such an airplane would not really be able to safely overfly China or Russia, and these are really the only places where you would need hypersonic flight. Otherwise, the primary use would likely be more along the lines of an "Interceptor'" but even here, if you were closing on stealthy jet traveling at Mach 1 towards you at 40,000 feet (closing speed of 70 miles a minute) by the time you detected them you would have only seconds to get a radar lock and if they were not more or less directly in front of you, it is doubtful that a missile launched at such an altitude and speed could even turn in time to make the intercept. (At Mach 6.5, the X-15 needed a special ablative coating. and even with this, the aircraft suffered damage during these high mach flights. Cooling an aircraft flying at this speed for more than a few minutes would be a serious problem.) Airliners would be a better application because they don't have to turn mid flight. One could take off from London and NY in a more or less ballistic flight path but the problem here would be range. Even if this engine was 50% more efficient than the J-58, the range would likely still be less that 4000nm, and here the problem is the 45 minutes of reserve fuel that is required for commercial airliners.

@j.f.fisher5318

4 ай бұрын

the other side of the interceptor question is that a missile uses most of its fuel just getting up to speed. Combined with hit-to-kill this would allow very miniaturized weapons or weapons with enormous range. And at high altitude then any missile is also benefitting from conversion of potential energy to help maintain its kinetic energy. How big of a hit-to-kill glide bomb would you need to top-attack kill a tank? And how many of those could you carry?

@shenmisheshou7002

4 ай бұрын

@@j.f.fisher5318 The biggest issue with using them as a weapon is simply the cost. For a one time use, a simple and inexpensive solid fuel motor is a far better choice. Also, as we have learned from the war in Ukraine, Tanks are extremely susceptible to attack by MANPADS. In fact, the Marines could see this vulnerability and with the enormous logistics required to keep a tank battalion on the move, they decided that it was better to have drones than tanks, and when they made this decision about 5 years ago, the vast majority of people thought the Marines were crazy. I was in the very small minority that actually was a Marine and was all to familiar with the limitations of tanks. In fact, during Desert Storm, helicopters, Bradly's, A-10s combined killed far more tanks than the Abrams did.

@hazard3020

4 ай бұрын

A while ago now but USSR detected Gary Powers travelling quickly at 75000+ ft.... and 4-5 were lost at a similar altitude near China.

@shenmisheshou7002

4 ай бұрын

@@hazard3020 As far as I know, two U2s were shot down. Powers in 1960 while overflying the USSR, and Ronald Anderson, shot down on a flight over Cuba in 62. There were no SR-71s shot down, but I think 12 lost in accidents. There is limited application for hypersonic recon aircraft because Drones are fine for tier 3 nations like Iraq or Syria and the National Reconnaissance Office has 49 active spy satellites, and these have better resolution than can be achieved in aircraft at high altitudes. while there may be some small demand for a hypersonic airliner, it is doubtful that one could be profitable. There may be a market for small, private hypersonic business jets though.

@hazard3020

4 ай бұрын

@@shenmisheshou7002 Many thanks for your kind reply. Yes that's what i remembered. I agree with you that Satellites provide far better long term solutions.

Wow, fantastic technology, concise explanations. And articulated clearly enough that I can watch them at 2x. Thank you! Really good work, both in preproduction and production. Keep it up!

Thank you for all your hard work to simplify all this into something I could understand, mostly!

Hopefully this technology will be applied to the next generation US air superiority aircraft, this would put it in a class of its own.

@sonneh86

4 ай бұрын

And hopefully they will not let themselves get hacked or spied on again by the Chinese

@smoshfan439

4 ай бұрын

@@sonneh86 they better use device independent quantum key distribution

Greetings Alex, I appreciate your YT channel and all of the Info and updates on various military technologies - just an FYI as a former employee of Leidos (Ret 2 yrs ago) - we always pronounced it as "Ly-dos". It's name is derived from ka-leidos-cope.

@j.d.604

23 күн бұрын

Is it pronounced LIE-DOSE or LAY-DOSE???

Some estimates put the theoretical upper limit of scramjets at around mach 24, which happens to be pretty close to orbital velocity. I don't know enough to say if that will actually be possible, but it's definitely worth keeping an eye on

@georgesikimeti2184

4 ай бұрын

Would any materials survived at this speed considering the heat it generates,it didn’t mention here but certainly a vital part in the puzzle.

@kalebbruwer

4 ай бұрын

@@georgesikimeti2184 You are right, and it would make rocket engineering significantly more complicated than it is today. But the rocket equation is exponential so any increase in efficiency is a big deal. I'm just wondering if it will be feasible several decades from now

Wow! Learned more watching this one video, than years of knowledge assimilation through casual video watching!

Wow I'm an idiot and I was able to follow along and even learn a lot! Thanks Alex and thanks to Dr Combes !

@caracoidwren944

4 ай бұрын

Funny, I'm an idiot too and I wasn't able to follow it.

Interesting subject and Excellent video. I saw the SR-71 take off and land many many times. It was always very impressive. The commentary was very smart but, I've never quite heard 'ad infinitum' (22:16) pronounced that way. Peace.

EXCELLENT FREAKING PRESENTATION....I sat there spell bound. Well done young man!

Alex thanks for the update on the new GE engine. Get to feeling better 💪

One other problem is the turbines would be destroyed by the shockwave from detonation combustion. Therefore, you need to use Expansion-Cycle turbomachinery using the 'cracking' into etheline and ethane, and expansion of the fuel vapor as a working fluid driving the turbines before the gas is injected into the dual-mode rotating-detonation combustor. And this could also incorporate a rocket mode..

@dynestis2875

4 ай бұрын

So what you're saying is we should nuke Africa?

@imperialguardsman135

4 ай бұрын

Or just use a turbine bypass duct lol

@MadMichigander1313

4 ай бұрын

@@imperialguardsman135, care to explain what that is? You need something to drive the fuel pump and or compressors before you get to ram/scramjet speeds.

@MadMichigander1313

4 ай бұрын

The idea is similar to the REX-series engines created by Garrett AirResearch/Pratt&Whitney for Project Suntan (originally planned successor for U-2) hydrogen powered aircraft, and led to the development of the RL-10 Cryogenic Rocket Engine.

@jeffkavanaugh6988

6 күн бұрын

@@imperialguardsman135: I see you're not familiar with the "Keep It Simple Stupid" principle, the engine will be running constantly in detonation mode since that is the nature of the combustor

Alex, you are absolutely amazing. You just gave a lecture on sub and supersonic combustion engines, and it was entertaining AF!!!! I hope to meet you in person one day so we can grab a beer and talk about aerospace tech:D

You covered a rather complex, little known about subject extremely well. Great vid

This has been a hobby study of mine for quite a few years. This is a nice video. Thanks.

It is awesome that we now have great 3D illustrations and videos to help visualize these engines.

Sounds quite scary but, can't have another hyper sonic gap. Just squeeze it till it pops is what it sounds like. Fine job Alex. Still hoping for a balloon from the United States Air Force for you on Christmas day. Thank you for keeping us updated. G. Hames

@bluemarlin8138

4 ай бұрын

The thing is, there’s no more of a hypersonic gap than there was a missile gap in 1960. Ruzzia and China can’t compete in technology, so they just pretend to have lots of scary weapons. Then, we develop lots of weapons that are far superior to what they falsely claimed that their fake weapons could do. They never seem to realize that all their false bravado works against them.

@user-ij6mf2hp3r

4 ай бұрын

Thank you for liking my comments. I like your podcast more than you know! Professional and informative. Merry Christmas Alex. Santa is coming, saw the NORAD track on your channel. Keep it up. Jane's probably wants you. Greg Hames

Merry Christmas Alex! Love your videos!

Go Alex, go! Awesome presentation on a very interesting and world-shattering reality that is fast approaching!

This cites weight as the big hurdle to overcome. But just as important is heat management. The SR-71 struggled with heat in the Mach 3 regime, and those engines were widely spaced. The heat management of a RDE is orders of magnitude harder than anything humans have dealt with before. Throw in the heat of all these various engines all in one system, and your cooling system is going to as big and heavy as the entire engine.

@pauljs75

4 ай бұрын

The fuel routing will be part of the heat management, doesn't seem like there's much of another way.

thats prety impressive RDEs i think can deliver like 25% increased efficiency over traditional combustion

Thanks for the ground news tip I’ll actually use this. May quite actually be the first KZread suggestion/sponsorship that I’ve ever followed up on. Thanks for shilling the right way;) I mean that as a compliment

Truly fascinating video, really well done!

I’ve never understood the Sandbox News moniker when all the shows are given the name AirPower (unless someday in the far distant future there’s a scope to introduce other shows or media), regardless Alex makes some of the best content out there!!

@weilam03

4 ай бұрын

the sandbox refers to the deserts weve been fighting in since 9/11. you still need airpower in the sandbox

U.S.: Develops Waverider experimental hypersonic scramjet missile. Russia: Pretends to have hypersonic missiles. U.S.: “Hey Ivan, remember when you pretended that the Mig-25 was so good, and I made the best fighter ever just in case you weren’t lying, but your plane turned out to be terrible? Well, I did it again, but with missiles.” Russia: “Fuckski.”

@aznguy771

4 ай бұрын

The U.S. should be able to say the same above for China. China's mostly stolen reversed engineered inferior technology and tactics will be crushed by the superior tech and tactics of U.S. and its Allies!

@Irowned

4 ай бұрын

Americans are only stealing things and then they develop it further and then claim that they invented it... They don't invent things. For example, the rocket engine was invented by a german. And the pulse jet was also invented by some european guy et cetera.

Bravo Alex Thank You! Get better soon!

I feel edumacated. Thanks for the hard work and generosity to share this with us. Hawaii

It seems that they might be able use these new engines in legacy platforms as well someday. I wonder how fast you can drive an F-15EX before it melts and bends? Maybe Mach 3.5?

@radical137

4 ай бұрын

Maybe a Mach 3.2 super hornet with 50 percent more range would be huge for USN.

@TymaDem

4 ай бұрын

Doesn’t make sense to put it into F15. I don’t think F15 airframe is designed to withstand Mach 3.5+ let alone the materials used in it. Also you have to make so many modifications to install inside the F15, that at some point it stops being an F15

@vanguard9067

4 ай бұрын

I would not want to be the test pilot:-)

@heathwirt8919

4 ай бұрын

The increased efficiency and range would be a welcome improvement but it's doubtful these existing airframes could handle hypersonic speeds and surface temperatures.

@CaptRR

4 ай бұрын

@@TymaDem True, I don't think they would push too much extra speed, but what it could do is make the F15 supercruise-like capable, which also extends its range dramatically. This would have huge ramifications in theaters like the pacific.

It's really interesting to me to see all this detail, as a friend and I were discussing all this back in the 90s when Area 51 was first being publicly discussed and what they were developing out there. It was all theory and written text at the time but we understood the idea of a hybrid engine that reconfigured or "morphed" from a conventional turbofan to a scramjet and ultimately to ramjet, allowing for a craft like the mythical "Aurora" that all the UFO buffs talked about. Thanks for the vid.

Excellent coverage of RDE's. If there's a need to go even faster, or to space, check out the work of Stoke Space and their use of RDE's to make reusable spacecraft. No need to add a 5th stage to the multi-stage engine, just need an extra tank to cary some lox.

@georgesikimeti2184

4 ай бұрын

….no air no lox!!,

Sweet jeez. Imagine flying Mach 5+ with a scramjet/detonation engine and just OBLITERATING some poor bird.

@DominikPinkas

4 ай бұрын

I believe there are very few birds at 60 000 feet…

@TymaDem

4 ай бұрын

I mean the fact that some birds could fly at 100k+ feet altitude is scarier that potential midair

FOURTEENTH!!4

@secretbassrigs

4 ай бұрын

PUTIN!!!4 PRESIDENT!!!

@secretbassrigs

4 ай бұрын

SAY YOU SUPPORT PUTIN!

Greatly enjoyed this presentation, my friend. Been looking forward to this for some time. Pray that you and your family enjoyed a safe, blessed and merry Christmas, followed by a prosperous new year. 👍🏻🇺🇸🦅🇺🇸👍🏻

Alex; Your very good at what you do! I really, really enjoyed The Son of Blackbird video & this too was superbly done! You are an asset to aviation & greatly appreciated!

I heard they're also working on a Twin Ion Engine Fighter and experimenting with Kyber Crystals.

Outstanding explanations Alex! Very clear. Did you discover in your research the minimum speed at which rotating detonation is expected to function?

Over my years as an inspector at P&WA. My highlights are having inspected random parts for the J58 back in the late 70's. The F119 prototype then into production and the last F119. The F135 prototype then into production. Sad part is P&W isn't working on stuff like this. They made the J58 back in the early 60's and haven't made anything that fast in 60+ years.

Magnificient analysis...Thank you so much

It amazes me that this kind of strategically important tech is being discussed publicly like this. Especially as US relations with strategic adversaries continue to deteriorate daily.

@curtishakes3577

Ай бұрын

They have something better in those skunk Works that they haven’t shown us. Like reverse, engineered, alien spacecraft.

Nice job! Very well explained...

Great report Alex. As always. Thank you

I was struggling to find something to listen to while in the store. 3 minutes ago. Perfect timing!! Edit: damn alright. This has come sooner than I expected. Excited to see how this shows up

@j.f.fisher5318

4 ай бұрын

same, I thought they'd be _next_ next gen systems, not for the coming gen.

Thank you sir! Wonderful report. You must work on these videos day & night with the data collection, the script writing, filming, editing & production. I'm glad you do it though!

Fine job, Mr. Hollings! Thanks.

Thank you for the clear report.

Mr "Sandboxx", as an engineer, and VERY interested, in anything "rotating or moving", I am very impressed, as always, concerning Your news. This, is very big news, I hope, US gives it a chance. Keep those news coming, I will follow. Great work. from a Finn in Diaspora

Offers speed & range just what is needed in the Pacific. Nice presentation Alex

We know for a fact that pulse jet tech was being flight tested with existing air frames just a few years ago. The photo and video evidence is all over the old interweb. The F-15EX and F-16 Super Falcon have been test beds for several different combined jet propulsion systems, but also innovative flight surface controls (cavitation breaking and semi ridged defamation surfaces). Old SR-71 frames have been brought out of the mothball fleet in recent years for high altitude, high speed proof of concept demonstrations, too. I’ve even heard rumblings concerning B1b Lancer being considered for retrofit and used for its original design as a high altitude, high speed recon/strike role. I’m truly amazed that these 30 to 50 year old systems have so much left to offer. The Lancer was originally designed with little more than slide rulers!

Thanks for those awesome F-22 shots at the end.

This is great stuff. I need to watch this a couple more times but that GE engine is super interesting!

There are a lot of dual scramjet engine prototypes that are deep underground in every american base. The concept was studied way back in the 60's, 70's and 80's, with the concepts shown in classified black prohect hypersonic prototype/pre production lift lifting body aero/space craft.

Merry Christmas Mate!

Really interesting. The question it raises though is just what used to fly along the coast and then inland that saw the DoD upgrade seismometers in Southern California so that they weren't disturbed by sonic booms. The estimated speeds for that craft were very high Mach numbers.

Thank you for this report

Great episode Alex, thanks!

Alex i know you had hell making this video trying to say rotating detonation turbofan scramjet combined cycle engine as many times as you did. Kudos my guy 👏 i sense more military abbreviations coming soon 😂

Wow...clever stuff. I built a pulsejet with my 14yr old son last summer. We had a lot of fun and thankfully didn't burn down the garage!

About 15 years ago Techland Research built a rotating pulse detonation engine that was successful in testing. It was mechanically rotating instead of creating a rotating wave. They were in talks to sell the technology but it fell through. I have worked on some of these projects over the years and they have been moving away from bypass configurations to single duct style.

Wow, you really brought the science on this one!👍🏼

@SurakIII

4 ай бұрын

It might even be fair to say that you blinded me with science.

Phenomenal job on video

This was GREAT, subscribed.

We've even had a nuclear detonation pulse propulsion spacecraft design back in the 60s called Orion. It was our best theoretical option for interplanetary travel for back then.

Great video but would have been nice to see something included about the British Reaction Engines Sabre. The US military are investing quite a bit with them now. Their pre cooler technology has many applications.

@delfinenteddyson9865

4 ай бұрын

I am really looking forward to see an ssto someday

I'm excited to learn about this advancement in engine technology. The future is literally here today!!!

There's an alternative detonation wave engine that's been mentioned is the oblique wave detonation engine that instead of using multiple detonation waves travelling around in a circle to generate thrust, it uses a single standing detonation wave that consistently generated thrust that can push an aircraft up to mach 17 theoretically at least.

Huh... I never would've thought you even COULD combine rotating donation, with air breathing engines! Of course, I've only seen them talked about as a rocket engine, which fuel and oxidizer are fed at their own rates, unrelated to the outside airspeed! _edit:_ 🤔 _Hmm... Using it as an _*_intermediary_*_ propulsion between turbo-fan/jet and SCRAM, might work and is quite smart!!_ 👏😮 Yay Strep Throat! 😢 But on that note... I hope you and yours have a happy and safe holidays! ♥️

Outstanding lecture 😊

I thoroughly enjoy your videos. Have you thought about a series on Nuclear Powered Jets? Thanks!

As a lifelong AvGeek it’s great to see Aurora finally coming to life!

The incredible tech it takes to get a continuous detonation engine to run, not even talking about the original idea, is out of this world. It's truly amazing.