In case you missed it at the very end of the video. We just announced our latest project startpropeller.com/. Propeller is an engineering recruitment platform that we created to share the most exciting and innovative jobs in engineering. Take a look at the jobs with our launch partners Hermeus, Relativity Space and Helion. If you don't see anything relevant be sure to sign up to our newsletter to get updated on engineering news and opportunities.

My reason for No success in life: I have no basement.

Getting some real "SR1-Normandy" vibes from this aircraft.

In Skunk Works (the company that designed the U-2, SR-71, X-15, F-22, F-35, etc etc ad infinitum) engineers regularly went to work in overalls, because desks don't invent anything. It sounds like Hermeus is taking the same, time-proven tactic. Awesome to see.

I used to be in the Canadian Airforce as an Avionics Tech. I'm currently going to to school for electrical engineering. This whole video and discussion about the work environment involving every member and aspect of the job is something I've been saying is needed when I was in the Airforce. This has been a very exciting video to watch while working on my Applied Physics Lab Report and Stats Assignment.

As a young aerospace engineer, the discussion about manufacturing at the end of the video was what sold me on the potential of this company. Being able to get up from your desk and talk with a machinist who will make your part or a technician who will handle it is what makes the difference between a project that goes from a blank sheet of paper to flight in 5 years and one that gets cancelled after 15 years of wasting money. The business case might be dubious, but with a great mindset and team like that building the aircraft will be no issue.

"engineers are mathematically inclined artists" love that sentence!

Moved over to work at Relativity Space 6 months ago after 3 years at Tesla, and I’m genuinely so glad to see that your platform here on UKposts is being used to broadcast such a great company to a larger audience. It’s a wonderful place to work where the leadership really care about you and share the engineering drive that so many of us young engineers have. Come build the future with us!

when did he start to show his face omfg not what i expected, dude looks chill asf

I love the idea that Brian had a neuron activation moment the moment he saw a working Turboramjet. That’s some crazy technological advancement for a company like that.

I'm not an engineer, and a lot of these videos take me hours to get through because i'm always going down rabbit holes on other tabs googling things talked about to get a better understanding, but this is by far my favourite channel on youtube. Every time you release a video I get excited that my dinner is about to have some great entertainment to go with it. Thanks for everything you do!

As an engineer.... Hats off to you for developing a platform that focuses and prioritises companies that wants to allow engineers to do their job. Incredibly well said that so many get pigeon holed, and we know all too well about the advantages of putting the people qualified to make decisions into the decision making process - such a simple concept so many overlook!! All the best with the new platform, and thanks as always for such incredibly detailed, insightful and entertaining videos, keep up the great work 👌👌

I'm doing a final project work in civil engineering for UG and stumbling on different challenges and overcoming them is challenging and tiring. These guys are making an aeroplane engine within 6 months. Seeing them facing so many big issues but solving them along the way is very inspiring. This video encourages the "engineering spirit" within me.

That's the kind of company I want to work at. Talented, passionate, and driven individuals working towards a beautiful goal. Love the Propeller concept. We definitely need more focus like this.

The romance of supersonic flight easily captures the heart. But fuel costs per seat is the metric you will have to solve in order to capture the minds of airlines.

love the conversation with tonio, im an engineering manager and designer at my company and we always are constantly going from engineering to the shop floor speaking with machinists to make the best parts possible. Its the only way to do it

What a genius move. Just through sheer views alone you're going to get tons of applicants, and high quality ones. That competition for the best applicants will incentivize people to do what they excel at. It's literally "may the best man win and rightfully get paid the most".

so funny that they matched their outfit 😂

I have a masters degree in mechanical engineering. In university I used to assist in teaching machining. When I got my first and still current job (17 years) after graduating I was unceremoniously booted out of the machine shop as I wasn't formally educated in machining and the technicians felt I was stealing their work. I just worked around it by switching to 3D printers and laser cut parts. To maintain my skills and continue to grow them I gradually bought myself every tool needed to obtain all the fabrication skills I ever wanted in my home garage. No ideal but scratches that itch to build.

As someone who's fixed J85 engines, it's astonishing to watch what is a relatively under-powered engine for modern times to something that could theoretically push high-mach speeds. Credit to their work, I wish them the best!

Just want to say I've loved your content for a long time and I wish nothing but the best for the team behind this channel.

What an honest dude accepting his shortcomings and methods of testing.

Can take a moment to appreciate the breathtaking 3d animations in this video. The turbojet at 11:50 made me audibly gasp.

Love your curiosity, Brian! You're always the first person in the room to ask great questions no matter what! That's why I love Real Engineering videos; practically pulling the questions out of my own head well over half the time. It makes for the most informative videos out there! Keep up the awesome work.

I'm a Machinist - still an apprentice, but I have been in the trade for six years. That final bit about everyone working together from each discipline was so inspiring and true; I love that mentality.

Crazy to see the J85 engine put up against the F100 engine, the size difference is astonishing. I really hope this company does well, ever since I learned in detail about the Concorde, I've been fascinated with supersonic travel and hypersonic challenges. Also making your own site for engineers to find a job is such a cool idea, great way to use your influence as an educational platform!

Inconel being called "just steel" at 23:38 is pretty funny. I know it's a minor detail but it is mostly nickel and chromium, iron is a small percentage of the alloy. It's notoriously hard to machine, which is the reason why they are using additive processes to make a lot of these parts (as well as to make impossible geometries).

Would you ever talk about apprenticeships for engineering and how great they are and how they allow for an engineer to get hands on work with a company while also getting their degree. Am currently on one myself, you were a large part of why I find the field so interesting so thank you, but id like to see your take on them an maybe even incorporating them into propeller as well?

just watched a 47 minute advertisement

4:12 Translation: The military industrial complex has the most money

By far the best thing about the US Naval Academy's engineering program is the fact that our prototyping shop is in the basement, and every work order has to be viewed by both a faculty advisor, and a machinist before it is approved.

Good job editing out everything he was pointing to on his first engine. Very helpful.

I cannot stress enough how important it is for engineers to work with not only manufacturing, but the mechanics who maintain these vehicles. I’m an aviation mechanic working on Boeing 747s, 767s, and 757s. There are components we are required to replace that the engineers clearly never intended to be removed once leaving the factory. For example, the bracket of a thrust reverser blocker door requires that a mechanic squeeze his hand in between the T/R’s exterior translating cowl and the inner T/R composite wall. We have to remove two castle nuts that are cotter pinned with sealant over them while working blindly, i.e. by feel, in order to remove them. The process takes over two hours to accomplish once you know which tools to use. This challenge could have been solved quite easily by creating a small access panel on the translating cowl which would reduce the time for removal and installation from five hours to about 1.5 hours.

Babe wake up real engineering just posted Edit: God damn y'all I just saw that a youtuber that I liked posted and commented to boost it with the algorithm, what's with the hate?

IMHO AF1 is a bit of a relic of the mid-20th century - although they have high-tech toys all over it. I'm pretty sure that somewhere in some top-secret hangar there's a stealth version of Air Force One, of course not as large. I'm just speculating but it makes sense. If/when the SHTF government and high-level military chain of command will need protection/speed/stealth. Air Force One has been a great airframe during peacetime but idk even with AF backup if it can do the job it was meant to do. Protect.

thank you for your incredibly educational series of videos about aviation engeneering. i learned so much and understood things, i believed to be out of my range to understand. i feel like your series has university quality. cheers!

The equation shown for drag at 38:20 is for incompressible flow because it assumes constant density. The statement that drag increases for higher velocities remains true, but after ~Mach 1 this is not the governing equation.

The part with Tonio Martinez is really cool for me. Because as you said, he's the one who's setting up the machine that builds the machine. I'm in logistics with 20 years experience, and the best jobs I've worked on are the ones where I can set up the processes from scratch. Working on integrating interdepartmental communication and processes, dividing up responsibilities and designing the hand-off procedures so that everyone has a set responsibilities that make sense but also where everyone is responsible for catching errors that occur. It's a very satisfying thing to do, and you can see that he both knows his stuff and appreciates the ability to do it his way

In fact.. really look at the sr-71. Even at it's time it was years ahead in design, airframe, engines, flight controls, engine cooling integration, just an awesome plane that if studied could be integrated with todays technology which could change commercial flight.

Interesting. I did my master's thesis analyzing a similar engine design/concept from a company called Limited Engines for a concept plane they called Skylon. So glad to see there are multiple companies trying to tackle this.

"Engineers are just mathematically inclined artists" beautifully said

I love the way these guys bring high aeronautical theory and practical, efficient manufacturing solutions together - it's refreshing to see this kind of 'can-do'!

Becoming much more inter-disciplinary, collaborative in engineering practices is one way to ensure your ability to consider wider range of problems, wider reaching impacts.....also one way to transcend your job description on paper, become irreplaceable or much less replaceable by AI. I love this.

Was so so glad to see this video 😅 and I would love those working conditions/ parameters, I love collaborating with other tradespeople/engineers, I believe it 'drives' enginuity and innovation and makes any process better through communication, we work better together, unlike what a lot top heavy company's believe by keeping everything separate and compartmentalized

Air Force One is by defininion an Aircraft built for the comfort of the President, That means comfortable temperatures inside and the ability to communicate and navigate. Irregardless of the altitude the aircraft skin temperature is close to T = Tambient (1+ 0.2× M²) Tambient ~ 250 K M = 5 You finish the calculation

The main issue is the sonic boom, many countries wont allow the boom, engine noise is another issue. If they can get past those there are so many other problem, I would love to see a "new" concord, hearing the original come into Heathrow London every day was just fantastic. You could set you're watch by the noise.

Your videos are seriously worth our time, this is very interesting stuff, Real Engineering indeed. Thank you for this hard work 👌👌

Man 39:25 is so friggin true. I worked with an engineer who loved everything about engineering. He was constantly designing improvements to board layouts, power distribution, optics and a few other things. I had never seen him so disappointed when he went to a conference with his ideas and improvements and all the other engineers looked at him like he was nuts. Their response was "oh we don't really design any of that stuff, India and China do, we just get the parts and plug em in."

I love hearing about cool new things going on in the tech, transportation and EV space. It's undoubtedly the wave of not only the future but increasingly the present. I'm constantly posting all the latest in EV and tech news on my channel too.

The next AF1 is going to be designed from a mass produced aircraft so parts will be readily available. Creating a bespoke aircraft like the one in the thumbnail is utterly infeasible.

5:00 - perfect example of how America/Americans talk poorly of weaker countries, but also don't want countries to be on their level. They therefore view counties either as leaches or as enemies.

Seeing the test environments made me realize I'd love to hear more about all the software related to it. Who makes the tools to process all that data and make the dashboards used to monitor the testing systems? Third party, in house? What does the tech stack looks like? Stuff like that. I know this channel is not related to software but if you could feed this lead to some friend who does that and let us know about it that'd be awesome!

“Engineers are just mathematically inclined artists.” Thanks for this quote! It describes how I feel about being a engineer quite well.

The issue with forging large surface area parts isnt only the pressure. But the elasticity of the mold as well. There is a point where more pressure is pretty much just transformed into the mold instead of the part. Also, large surface area cools off more rapidly. Esp since the moulds can only operate at like 400°C before loosing their own material properties. Esp on slow hydraulic press forges thats an issue that leads to inproper filling of the mould. Mechanical screw presses operate much faster, but are limited in pressure. Current max is like 35k tons. (2 presses exist. One in china, one in austria, both the same built by SMS) There you can manage more complex shapes but you are limited in size. 3d printing it is a way better solution now. For high load parts forging might be necessary to enhance material properties.

Holy cow! I was already excited with the primary content of this one, but "Propeller!" I'm not an engineer, just an artist who loves aerospace! (SA43 Hammerhead is the GOAT) I'm beyond excited about your career forum for engineering! This is an Afterburner for Engineering! Fantastic!!!

Love the idea of startpropeller! Such a great initiative that makes perfect sense in this context!

You had me at “working turbo-ramjet” - I will be watching this with great interest

That young engineer has done very well in presenting the project, I bet he was bricking it about not releasing any of the real secrets, class video again, real engineering is a fitting name for sure!

Some companies have inspiring mission statements: make life multi-planetary... accelerate sustainable energy. Hermeus' seems to be: keep America on top. Best to rebrand as Icarus.

the president doesn't have to go anywhere in that short of a time period. It doesn't make any sense. IF anything, worst case the President needs airborne ENDURANCE. -Former USAF Evaluator Pilot

I think it would be cool to have a supersonic air force on one plane, however, I think the increased risks of hypersonic travel, especially in the near future, will mean that it'll be decades before there is one if one gets produced. Also Air Force One has to have an incredible amount of technology onboard for the President. That comes with so many issues, so I don't think it'll happen any time soon.

I love what they had to say near the end about putting engineers in 'into the think of it'. I've worked for one of the big 3 car companies in the US for years and I can say they have the habit Martinez described. The Engineers that design the vehicles usually don't work in the same State let alone building, on the RARE occasions an engineer is allowed to actually come down and see the part they designed (Usually because of us line workers complaining to management about that faulty part for months on end) they're like a fish out of water, they have no idea about anything going on and seemingly walk out more confused then when they entered. I can't imagine how much money and time my company wastes because of this ridiculous model, and this is why we see companies created/run by engineers at the top run so smoothly. They know what it's like to try to solve a problem when nobodies aloud to talk to each other.

It's nice to see some young talent in the US innovating! There's always so much negative news, and big media platforms don't show us this stuff. They prefer we stay divided. As someone who's been to China many times. It's the future. We can definitely keep up and continue our progression in all things. As a proud American, it's unfortunate to see my country decline. In some areas, rapidly. It's the inevitable rise and fall of empires. Congrats on these guys' successes!

Even in the Soviet Union, such hypersonic civil aircraft were created. 40 years ago. The USSR was really developed in this area of technology. As a result, when the USSR collapsed, these aircraft stopped being produced, why? Because flying on such an airplane is 5 times faster, but the price is 10 or 15 times higher. Are you ready to fly 5 times faster, while paying $1000 instead of $100? (this is due to fuel consumption and greater wear and tear on aircraft at higher speeds; it’s hardly possible to think of any miracle that it will become cheaper)

No shot this ever gets certified.

I haven’t followed self driving for a long time and seeing this I got surprised. I really thought it would be better by now. People seem to think that “only a few” major faults in a couple of hours of driving is anywhere close to being acceptable. Some of these insane blunders seen in this video are so bad they would make my top 5 worst driving mistakes made in my last 15 years of driving. A good driver can drive a whole life without hitting anything and people think it’s awesome that FSD would only hit a few things in a day

That building was used as a set for "Reacher", the series on Amazon.

One of the really great windfalls of doing huge projects like this is discovering, and possibly monetizing, the somewhat lesser initial solutions to problems encountered along the way to funnel back into the main project. I've been notorious in this aspect that occasionally some discoveries eclipse what I was trying to do that inevitably spiral into their own more lucrative projects. I suspect Hermeus will encounter the same in tackling such a sizable target where spinoff technologies will add an appreciable library of methods to other common problems to boost production of their own project, but also benefit a plethora of feeder industries.

The khaki pants and black t-shirt uniform the company employs is on point

The ultimate will be material science development of metal alloys that reduce drag by controlling the interface between the surface of the vehicle, and the atmosphere that is impacting that surface at high velocities--- the Teflon of supersonic flight.

The issue with getting a job in most the companies stated in the video like Relativity Space is that being an US citizen is a must and that unfortunately is a huge hit for us enthusiasts who'd dream to work in such companies who are not US citizens. I'd learnt this bitter truth last year when I visited stalls hosted by various aerospace companies at the Spaceport America Cup, most not able to provide internships to non-US citizens. 😢

I don't have a problem with the propulsion, I have a problem with it melting.

these are some breathtaking animations for something that sounds phenomenal

"I want to build a passenger plane" "Cool. First can you help with our weapons of mass destruction and death?"

Lmao a faster jet is not at all comparable to the first great roads connecting countries and empires. We already have instant communication with the entire globe. It won't do shit for the GDP, and the fact that the dude from Hermeus was able to claim a 4 trillion $ increase with a straight face does not bode well. There is a use case in the military, but for consumer use it is an incredibly expensive toy for wealthy people... and akin to shoveling coal into a volcano when it comes to our sustainable aviation goals. These videos need to spend more time on drawbacks and real metrics, not all company-fed propaganda.

You can’t fool me, that’s the Normandy! Hail to the Commander Shepard In Chief!

Its been very satisfying seeing this channel grow!

Certification for A/C prototypes is difficult at best. Same with modern Vehicle Design. My last project concerned LIDAR for Autonomous Vehicles. Dealing with regulations during manufacturing is the cost driver. The point is. Breaking in to the industry can be prohibitively expensive because of regulations. P.S. We had Hypersonic Missiles back in the 1950's. Think about it.

Let's start by upgrading Marine One. Not to a new prototype, just a newer anything that already exists. The same reasons we are using an ancient Marine One are probably the reasons this monstrosity won't be used. People like what is understood and familiar even when outdated.

0:33 you seem surprised these things exist? Lockheed SR-71 Blackbird (first flown in 1964, retired in 1989, 1998 & 1999) has 2.

By the time Boeing finishes their new Air Force Ones, Hermeus will have the hypersonic version ready.

30:38 - Sounds like this guy actually knows what he's talking about. At least, enough to complete the mission. The scope may expand beyond his capacity. But, I believe that company will deliver the data needed to take the next steps. I doubt the company will exist in 15-20 years. I suspect the company will be dissolved into other, more established companies (i.e. bought out).

It’s completely not necessary. There’s zero need to have the president be somewhere far in two hours. Especially that it’s super small. The 747 Air Force one is the White House. You need to have the room to support all that logistics.

Taylor Swift’s next private jet:

13:00 holy shit. That is one of the best explanations of the basics of a Ramjet in the whole internet. Awesome video

41:00 fly down fly down, mayday mayday! jk, thanks for this awesome video man. I did miss the usual fancy graphics this time around, but lovely anyway.

Bombardier was an established Aircraft manufacturer with a great product with engines from an established engine company. The problem was operators did not trust their long term viability. Going fast in the atmosphere is extremely expensive. I don't see how the economícs will work. Good on them for trying. The romance of aviation catches a lot of dreamers.

The AirForce1 will remain a 747 for the sole reason that it has 4 engines. If a dual engine plane has an engine failure, it has to land as soon as possible. If a jumbo has an engine failure, it has to land as soon as practicable. Hence, it could continue to fly for a very long time, as they have in flight refueling capability.

Communication is critical to success. Disputes can be common between designers and builders (and leadership/stakeholders)

41:16 “Even tolerancing, you learn about tolerancing, but you never fully understand it until you see two parts not going together properly.” Hermeus VP Production (and engineer badass) replies: “Precisely”. What a great way to respond after discussing tolerance. I’m looking forward to seeing what and where Hermeus goes from here. No doubt, wherever they go, it’s going to be fast.

RE: the kid sounded nervous but he knew his stuff - i think you should give him the job. 😄

I can't help but think that a compound engine, allowing for both types to the active at the same time during the Rams startup would be preferable no slowdown needed.

The best starting location would be transportation of goods. It would get you off the ground sooner while still testing. The company wouldn't have to initially worry about meeting leisure travel safety measures.

Very cool! Thank you for making this!

This video is absolutely amazing 🤩 thanks a million ❤

It is suggested that the primary objective for generating revenue initially is to establish an in-flight testing platform for companies that are developing technologies in the hypersonic range. At the same time, the development aim is for an aircraft to operate at lower hypersonic velocities. Is that not contradictory as the use of the testing platform is limited?

The commercial prospects for such a plane are so challenging that you should not expect to see them in regular service by any major airline. This is what most videos that focus on hardware and don't really look at the situation more wholistically. If you were to do this, you would find that to be commercially viable, a long haul aircraft would have to seat 200 to 250 people and there are two words that dictate why this is necessary: Gates and Slots. The current system system is at capacity for gates and for landing/departure slots, and the system becomes inefficient if you have to fly more but faster planes because if you bring in a plane of 100 people you have to use three slots and three gate times to accommodate them, where as the 350 passenger plane needs one slot and one gate. Now maybe you could operate between airports with less traffic, but now you can only really sell a seat to someone that is going from two "secondary" cities because if you can't get them closer than 100 miles to their destination, the time they would need to convey that distance on the ground eats up the savings from the air speed and further increases the cost. Then there are pilots, air, and ground crew. Once again, the fewer people you carry per flight, the more flights you will need, and the more people you will need to support those flights. We saw the power of marketing when Cessna introduced the most successful business jet family ever made, the plane that critics said was too slow to compete with the Lear jet, but ultimately devastated Lear and becoming the most successful bizjet line ever made. Boeing did the same thing with the 787. The aviation magazines looked at the hardware and said that the A-380 was going to dominate the 787, but Boeing had done its marketing homework well, and a decade and a half later, Boeing is still getting orders for the 787, while the larger and faster A380 production ended in 2019, with only about 230 delivered. The A380 did not fit the existing commercial aviation model well enough for it to be successful and that is why Boeing did not build another Jumbo in spite of the criticism levied upon it by people that just look at the specs of a plane and not what it takes to be successful in the market. This plane might find some market as an executive jet service, and it might eek out an existence on a few high density low traffic end point airports (Concorde flew from Paris to Rio, or from London to Bahrain) but there are not enough gates and slots at the major hub and spoke airports to accommodate enough of them unless they can get the seats up in the 200 to 250 range, and that would be quite a feat. If Boeing or Airbus thought it was commercially viable, my guess is that they would be perusing it.

whats missing about the speed is that speed has been offset by scale and cost - so container ships slow steaming but larger, 747-A380 vs Concorde. Even HSR rail trades speed for the cost of the rail infrastructure. At the same time the Supersonic Jets seem to be able to use existing jet engines and generate supersonic speeds without needing the military to offset the R&D cost.

I noticed his Casio calculator watch at 23:31. If that doesn’t mark a true engineer idk what does. I can’t wait to see what Hermeus puts out, they seem leaps and bounds ahead of the competition right now.

The J58 (SR-71 engine) was NOT a ramjet. It never fully bypassed the turbo-machinery of the turbojet. Above Mach 2 it diverted 25% of the mass flow directly to the afterburner so you could call it a pseudo-ramjet.