Stoke Space CEO Andy Lapsa - Fully Reusable Rockets - NSF Live
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- Опубліковано 3 жов 2024
- In this episode of NSF Live, Das will talk with Andy Lapsa, CEO of Stoke Space. Topics will include Aerospike Engines, the path to flight, the next testing milestones, and much more.
NSF Live is NASASpaceflight.com's weekly(ish) show covering the latest (~1 week old) news in spaceflight. It's broadcast live on Sundays at 3 p.m. Eastern. On each show, we rotate through various hosts and special guests.
For me Stoke is the most exciting rocket companies out there. Making innovating ideas that look so obvious in hindsight.
The second stage is so different from any other vehicle out there. A really clever design. I really enjoyed the interview. Well done NSF.
Not original with them. Look up Philip Bono.
Stoke is a rockstar company. Their heatshield solution is next level.
Not original with them. Look up Philip Bono.
Great interview, and I'm very happy to hear a guest actually reference SpaceX and Starship (previous guests have sometimes seemed to pretend these don't exist)
Yep. Everyone else is effectively betting that Starship doesn't succeed, whereas Stoke looks to compete with Starship.
@@ohedd No competing. But to being alongside it. Big diference.
@@alesksander of course it's competing. It's competing in a segment that Starship would've otherwise occupied alone, which means you get monopoly pricing. Stoke means competition and that's good.
Stoke Space is up to some really amazing stuff! I’m Stoked 😂 to continue watching their development. Thanks NSF for the interview!
hahaha i see what you did there
Love Stoke and their ideas for their rockets!
Super excited to see their progress.
Excellent Excellent Interview. Thanks John and NSF! Andy and Stoke Space rock. Wish them the best of success
That was one of the best, most informative and interesting interviews I have ever seen. I'd never heard of Stoke Space before. What an inavitive and ambitious company. Love it. Thanks guys!!!!!!
Excellent! That's exactly why we do these! - Das
Das (@KSpaceAcademy) did a great job of interviewing Andy. With his background in spacecraft, he knew the right questions to ask including selecting the best questions from Chat. I hope NSF continues to bring in the movers and shakers of the industry. Thank you! 😀
Thanks for watching! -Das
This guy has a truly ambitious plan and he is fiercely executing on it. But he is also such a likable guy. How do you get both in one person? Inspiring stuff!
You have to be likeable to run a startup in a speculative field. 99% of his job is talking up the company to investors.
@@z-beeblebrox Makes sense. Still, I have to say, compared to Elon Musk, well ...
Superb job! Stoke deserves much more attention imo. Super cool tech. Super cool engineering!
The plug nozzle for a reentry heat shield is not original with them. Look up Philip Bono.
@@robertclark1734 Dude, enough with the Philip Bono crap.
Another fantastic NSF Live stream! I concur, more CEOs please!
Thank you Andy and Das.
Great interview thanks Das Andy and the NSF team.
that design of their engines is so slick another great nsf live with das and andy lapsa seems like such a kool guy
It’s not original with them. Look up Philip Bono.
Really stoked about the things this company is doing!
Wow such an amazing interview. NSF has been really kicking ass with space coverage!!!
Very informative and on point! Thank you both! Amazing info! Well thought-through design! Safe flights!
It’s not original with them. Look up Philip Bono.
Brilliant. Just brilliant. I figured the first time I saw this that the guys from SpaceX and BO were both looking at this thing drooling. It's taken out so many moving parts, so much complexity that it solves just so many problems! Not the least of which problems they solve is the "Flip" maneuver which I'm not sure man was designed to survive - seriously!
Thanks to @NSF, Das and team for great presentation, analysis and overview of the issues and so on.
"Flew the flare stack" - HILARIOUS! Flying tea kettle is what I always see.
For the "Hula hoop" animation, you could overlay the thrust vector on top of the image to give you some idea of the changing direction of thrust and how it results in both changing direction, and as in the hopper test, horizontal translation.
Thanks! I hope the extra discussion around each topic helped more folks understand exactly how cool Stokes tech is! - Das
It’s not original with them. Look up Philip Bono.
Great guest! Thank you, NSF.
This was awesome!!! MORE PLEASE!!!
“Let’s call it a valve” for the throttle control of each chamber. IIRC Tim D. didn’t get much more out of Andy on this! Love the intentional ITAR or proprietary vagueness!
Great chat with lots of info, I wasn't really aware of Stoke Space but hope their concept works as it looks ingenious especially the re-entry cooling, if Elon Musk is Iron Man then Andy Lapsa definitely has a Captain Kirk vibe.. going where no rocket company has gone before.. 😉
wow stokespace and rocketlab definitely the most interesting space companies out there after space x
Never heard, read that additional water cooling requirement for the shuttle. Happy to learn
Thanks. That was great!
Ton of new info on their rocket. Bonus new Shuttle detail (ground heat management).
Thank you for this interesting guest! Wish only success for the Stoke Space!
Thanks NSF, can't wait for next hop tests! - 2 Q's:
Would Stoke need some kind of additional thrustor(s) to control axial spin?
Why not use a delayed entry burn - Firing the engines during (engine first) re-entry could also act as a shield against the super hot plasma, why would this not work?
this is late but on your first point, takje a look at a photo of the heatshield. the point is off-centre to give them roll authority.
Loved this chat with Andy
Would be nice to have timestamps
Yegads, the host should ask the question, let the guest answer (which, in this case the guest is doing incredibly well), and then just go on to the next question. Instead the host thinks he needs to restate the answer, go through it all over again, as the guest sits there and listens to the host basically restate the whole explanation the guest already said. Each time the host did that I wanted to say "Shut up, we already understood what your guest said. We want to hear more of what the guest has to say!"
yeah, that also annoyed me...
I don't agree. Das (the host) is a STEM educator, and he makes the show A LOT more accessible to those of us who doesn't understand everything upfront, by confirming that he understands, and that everybody gets more than one chance to understand what is being said.
@@DipperDKI think this is a great point, however I think they should consider cutting in the more simple explanations after in a separate video. Most people who tune into the livestreams already have an advanced interest and likely, advanced understanding. Hope this helps clear the air and helps get the point across without being rude.
20 minutes in and I have to stop watching for this reason. Host complains about not having time to spend 30 minutes on every topic but then doubles the length of every question for no reason.
Yup, same for me. Too much re cap.
Excellent stuff bro
Great interview !!!
Good video. However, Id like to suggest that you to try to get as much knowledge out of your guests in the show as possible. I understand and like that you also want to include new viewers and make it easy for them to understand, but you could also do that in a separate video, or cut it in afterwards. But I dont think it make sense to explain that much live what the guest says. I dont want to call it wasting the time you have with the guest, but its certainly something in that direction. Go as deep as possible, you can always explain afterwards when the guest left.
Maybe take more the podcast approach of interviews, where you often see hosts cut in explanations about whats going on in the talk after they recorded the session, to explain basic concepts or tell the viewer what the guest just said. This way you can go deeper into specifics and also have more time for live viewer questions.
Keep up the good work and thx a lot for your great coverage!
The dream of aerospike lives on! It was sad when Firefly had to sell and the new owners ditched their aerospike.
The idea is not original with Stoke Space. Look up Philip Bono.
Thank you.
HOW CAN I INVEST IN STOKE ??? Also, Andy, please… More videos. Thanks.
Awesome interview NSF! I think John did a great job explaining what Andy said. I think Andy is really really smart, but it’s not always easy to translate some of these concepts into something thing that regular folks will understand, so I think John did a great job at that. Stoke and SpaceX are the most interesting and exciting rocket companies in the world and both have an awesome future ahead, they are going to leave every other rocket company behind.
Thank you... I really felt it was worthwhile to dig in to some of these concepts so folks would understand exactly how cool Stokes tech is. - John
@@NASASpaceflight absolutely agree! It’s going to be very exciting to watch Stoke
The plug nozzle reentry nozzle is not original with them. Look up Philip Bono.
Way to go STOKE!
I missed the part where the hydrogen gets warmed since its being used as cooland. So the hydrogen turns into gas? boiloff? what do you do with building of pressure? How is the "regeneration" part done? Also when it comes to trash, taking that back to earth, I'd say you just fling it into the sun? Or if thats too much fuz, you could fling it into the moon and have a dedicated junkjard on the moon.
Ok so the easy one is the junk part. Changing orbits requires deltaV, and for anything beyond earth's orbit, it requires a LOT of it. In order to get something to slow down enough to crash into the sun, you would need to cancel out the equivalent of earth's orbital velocity at a minimum, and that is a LOT of energy, even if your goal is just to pass neary enough to it for your debris to vaporize.
As for the rest, the hydrogen that vaporizes actually benefits the engine because it is an expander cycle, meaning this phase change is specifically required and it being used on a heat shield actually makes it a LOT better since normally its the square cube law that limits your thrust on those engine types.
The term regenerative cooling is when you use a non-destructive source of heat absorbtion, often being circulating fuel through your chamber and nozzle walls. This is very very common on engines and here is no diffrent, however this is new on a heatshield as normally they either use heat tiles (think starship or space shuttle) or ablative heat shields that slowly get burned off, taking a lot of heat away in the process.
The ablative shield is strictly destructive (resource is lost when operating) and the heat tile is resource neutral (nothing is lost in term of material but its heat absorbed does need to be radiated away over time).
hope that helped
If it works, id love to see how well it scales up in size. The proposed capacity is plenty to start, but they get a much larger market if they can get in the 20 ton LEO size
This project is really ambitious for being their first rocket. Currently the only orbital rocket that is partially reusable is Falcon 9. Stoke wants to go both fully reusable and have a highly unconventional structure.
I'm a bit worried they are trying to bite off more than they can chew with their budget. Even quite conventional rockets have cost a lot in the past and took much longer than expected. They might run out of money.
They already did a hop with a first prototype. I have faith.
I think they know exactly what they're doing. They don't seem to be too worried about the booster. After all, several engineers from Stoke have worked at Blue and gained experience with New Shepard, New Glenn and BE4. But it seems that they were not able to contribute their own ideas enough. Last but not least, a successful upper stage can be marketed on its own, as can be seen with the Centaur. It flew on Atlas, Titan, Delta, Saturn and last but not least, now on the Vulcan. If necessary, they can look for a booster manufacturer.
Very nice! One thing that left me wondering: When the 2:nd stage reenters, its engines are off for a quite long time. During that time the liquid hydrogen is flowing trough the shield in the bottom of the vehicle and cooling it. In doing that the hydrogen warms up and propably quite a lot of it turns into gaseous state. Where is the gas going when it is not consumed in the engines? Or is the liquid hydrogen so much under its boiling point that it only warms up without boiling (too much)?
It is exhausted. Everyday Astronaut had a great video on them, highly recommend to watch
interesting thoughts about the reusable 2nd stage of the Falcon 9
I have some very cool aerospace/ reentry Systems designs and so much other cool stuff to share... I see very safe systems 🎉🎉
2nd stage reminds me no end of DCX. Except for the booster part.
Great show! 😁 Why were the pictures and videos so pixelated? It looked like a 140p stream 😅🧡
@3:55 "only one other company doing this, it's called spaceX"...maybe I misunderstood, but there is also Rocket Labs. Maybe he is saying 'at the time' he got started. Still RL was around long before Stoke Space.
Rocket Labs plans to use a disposable second stage. I'm sure that's what he was talking about since Blue Origin is working on New Glenn which is a reusable 1st stage with a disposable 2nd stage
Submarines have an outer shell. Has this been considered for thermal management?
Good lord -- it's Bird-1 from You Only Live Twice! If he tries to launch it from a volcano, he must be stopped!
Great to hear about the waves that starship will make in the industry from another CEO. Seems to be a dirty word for others.
Is there a physical boundary how big they can build their upper stage?
Stoke Space theme tune has to be "Ring of Fire" by Johnny Cash.
Great show, glad I caught it in the replay.
So i assume the yearly prediction show will be nect year?
A lot of cool solutions to rocket problems. I know Elon likes clever ideas, so I bet he's following these guys with interest.
😅😅😅well information good show you 😅😅😅
What happened to the first stage?
Can a two-stage Stoke Space NOVA that is sitting on top of three parallel spacex Super Boosters make it to mars and back?
I have always had a laugh at the Everyday Astronaut when interviewing Elon and asking him about Aerospike engines. He says they are not practical, or something like that. Good to see some folks giving it a go. There is a lot of investment money being thrown at these rocket startups so might as well take some of it and see where the technology takes you.
Andy Lapsa is Andrei Lipsa in RO?
Firefly!
Blushift Sacha next!
@20:59 Could this "rocket ring" be incorporated into the exterior aft section of Super Heavy's Booster section?
I keep wanting to see the booster setup up for Super Heavy side by side by side like a Delta IV.
Seems like a fisheye (sphincter type) controllable nozzle at each thruster port would be a good way to vary thrust side to side?
Then again it could be ringed multiport fed nozzles with flow control valves as well?
Multiple nozzle rocket engine! 1 Engine.
Spacex, Stoke, Relativity, Rocketlab. I want to say Firefly but kinda so not much innovative planned at least released to the public very small sats/payload lander in there future path at most. Nevertheless Best companies and largest visions and innovative.
Good point on the fresh food. I suppose it won't be too long until the first McDonald's in orbit.
Everytime there's a new rocket company they want less than 24hr turn around and fully reusable. Then once they reach orbit they learn why no one has done it yet.
Trying is how we make progress.
By this logic no one has been to space before Gagarin and to the moon before Armstrong. Somebody always has to be first.
Thing about inspection between flights, skipping inspection and refurbishment between flights is *not* "how we operate aircraft everyday" - planes need to get a checkup before every flight, from airliners to fighter jets. Even the least rule-abiding pilots at least do a walk around the airplane to check for obvious defects, because not doing it is asking for trouble, even on the most reliable aircraft - now imagine it on something that routinely gets loads similar to the most high-performance fighters
When he’s spoken about this more in depth elsewhere, he’s said the goal is to minimize tasks & time requirements for between-every-flight inspections, not eliminate them altogether. Like it took something like 30,000 person-hours to inspect the tiles on shuttle between flights, which put a serious limit on turnaround time. Stoke’s goal is to design a vehicle that doesn’t require such time-intensive inspections each time it flies, determine what’s critical to inspect after every flight, set appropriate tolerance limits, and establish proper inspection/maintenance schedules for less critical aspects.
Fighter jets experience forces in all kinds of directions at some really substantial g forces. This capsule only has any substantial force along one axis.
pick up things in space and reuse its parts and material in space
45:42 There definitely have been >1000 Soyuz launches
This cooled plug nozzle Stoke Space approach will use to deal with reentry heating is not original with them. Look up Philip Bono.
My, this is UNBELIEVABLE. Let your guest talk, for gawd's sake!!! You DON'T repeat his words - first, you make the guest look stupid (cause why do you re-explain stuff that he just said), second, you steal his place in the show, third, YOU WASTE TIME. Absolute turd of an interview
Have to say I agree with most of this, although it shows more of a lack of respect for the audience that you need to "dumb it down" for them, even though it was totally unnecessary. Andy was very clear in his answers.
The instant reusability argument is folly. You make multiple units. Prepare the payloads, inspect fully then launch. Comparing a capsule/2nd stage as an airliner i silly. The amount of stresses on an airliner vs a capsule is not any where the same.
The DOD has wanted a rocket that launches again within 24 hours for a couple of decades, Stoke is just working toward the customer.
@@ohppig1 absolutely. But it is silly to have the very same capsule do the “next” mission. Especially for the military, you need a backup. So you have 2 or 3 capsules. It’s not the same things as having “simple” tankers go up back to back.
@@vonpredator Believe it or not. USA military wants reusable missiles that can deliver a payload to target, return, be rearmed, and relaunched, within minutes. They are already testing, on a small scale.
Not really, well I mean for stoke there IS going to be one thing, that the stage will require handling and re-stacking at the very least, and the first stage may be out on a barge so they would need another first stage at the landing point which you would assume would be near the next launch site. Since the capsule will land using landing gears it will need to be re-integrated by another system.
If you take something like starship it is going to land right on an integration tower meaning it DOES have a path to imediately re-stack. Now for both seeing how far they can push that will be something left to be seen, but its not too appart from, lets say, a military fighter jet. You will need re-integration of things like weapons/consumables and checking systems and whatnot, but you aren't shipping the fighter back to the factory for a full refit or throwing it away
@@vonpredator they aren't. he sais the 2nd stage might remain in orbit for a couple days or more, "rapid re-usability" means when it _does_ return it goes again, not that there is only 1 vehicle being used.