Starship’s upper stage will make a partial orbit of Earth, re-enter the atmosphere and splash down in the Indian Ocean…
Also known as not an orbit, or a suborbital flight / trajectory.
Saying a suborbital flight is a partial orbit is like saying a cessna can partially achieve hypersonic velocities.
NASA is also counting on a specialized version of Starship to ferry astronauts to the lunar surface later this decade under its Artemis program.
There is no public information indicating design on this variant has even begun.
… And Starship+Heavy Booster was supposed to have completed a succesful orbital flight in Q2 2022, per NASA’s contract with SpaceX.
Which it still has not done, in Q4 2024.
If SpaceX somehow completes an orbital flight of this thing in say Q2 2025, and keeps to the originally agreed contract timeline, well thats only 3 years behind schedule.
But this is Musk. Not the best track record on delivering on promises, more of a ‘pray i do not alter the deal further’ kinda vibe, but spoken with all the menacing intimidation of Darth Helmet.
So far he’s gotten a banana to suborbit in this thing.
…
I’ll eat a sock if a SpaceX launcher and lander gets human beings to the moon and back safely by the end of 2030.
Did I forget to mention Musk’s plan for a moon mission requires the Starship Lunar Lander variant to remain in Earth orbit, rendevouz and dock with and refuel from something like 12 or 16 other Starships?
… And there is also no publicly available information indicating actual design of this refuelling system either, just vague cgi concept arts of a plan?
I’m a space systems propulsion design engineer by profession. I worked on a project which I will not name that requires on-orbit refuelling. (It’s not this one and I don’t and will never work for Elon Musk).
The technology for in-orbit refuelling doesn’t exist, and there’s a whole lot of new technology required. Remotely docking is akin to self-driving in complexity; don’t forget to factor in the signal delay if you’re in a lunar or translunar orbit. If you make this a crewed activity only, then the problem becomes one of pneumatics. A pressure system that can reliably contain and transfer pressure up to the levels of spacecraft fuel (around 300 psi for liquid, 3000 for gas) repeatedly, in both directions is very, very heavy. The valves are heavy, the tanks are heavy, the control systems are heavy. Too heavy to be considered viable for spaceflight. Even less so for a mission whose payload is “as much transfer fuel as we can possibly get up there”. A huge amount of innovation has to take place before this can become real. As of 2022, when I last worked on this, none of the technology was even being researched, that is to say it was not even at TRL 3. Typically these things take on the order of a decade or so to get to TRL 9, if they are successful and quick.
I’m not saying it’s impossible, I’m saying I’ll be fascinated to see which solutions they come up with, and that I’m sceptical that they do have current solutions which are feasible and useful, rather than something like a one-shot refueling subsystem that weighs 250kg and delivers 15 litres of hydrazine.
Saying a suborbital flight is a partial orbit is like saying a cessna can partially achieve hypersonic velocities
Starship reached over 26000km/h, it had enough energy to be in orbit if it was in a circular orbit. The orbit was intentionally left eccentric enough that the perigee was within the atmosphere, so that a deorbit burn was not required.
This is a cessna going mach 4.99 and you’re being pedantic enough to say it was not hypersonic.
I agree with the rest of what you say though. As fun as it is to watch, Starship is over budget and behind schedule. Elon has over promised (pronounced “lied to get government subsidies”) on timelines and capabilities so much that it may jeopardize the Artemis program. Which makes me mad.
You’re being pedantic enough to say it was not hypersonic
That’s not what OP was saying at all. He/she was pointing out calling the $100 in your pocket a “partial $1000” is just silly. So instead of saying “partial orbit” , the author should have I stead said “sub-ortial flight”. Their words, not mine - although I do agree. The tendency for journalists to over-exaggerate anybody’s claims is infuriating.
My point is that this flight wasn’t $100 out of $1000. It was $999 out of $1000. If the engines burned for a couple of seconds longer, it would have been a stable orbit. But their intended orbit was eccentric and had a low perigee, so that it would reenter after half an orbit.
so much that it may jeopardize the Artemis program.
Which means he’s successfully cornered the market and he hasn’t even launched his product yet! What a great billionaire, I’m sure he’s a great fit for a government position.
Are we talking about the same flight I watched today? It made it through re-entry and made a controlled, powered, soft splash down exactly where it was supposed to.
Ehhh, two years late for a rocket isn’t terrible. Space is hard.
But yeah 2030 is an aggressive timeline. I’m shocked NASA didn’t go for an Apollo-style service module and lander that gets assembled in-orbit, launched by Falcon Heavies. That seems like the least crazy architecture and requires very little new technology.
Yeah, the Starship was severely over-promised from the start, especially the payload capacity. I wish there had been more required demonstrations from the beginning, instead of just using the numbers promised by Musk, who is known to inflate numbers for marketing purposes.
Not to mention the assumption of orbital fuelling working perfectly without even doing any demonstrations at all or pointing to any existing technologies. It’s a very Kerbal Space Program idea but significantly more complex in reality. Especially as now they are planning 5+ refuelling missions per Starship going to the Moon, which is logistically baffling.
Or…Elon maybe was talking out of his ass when he came up with the original numbers? If he went wildly optimistic on the “if I tell them to do it we’ll do it” attitude it would explain it too.
They’ve also blown their entire development budget and have received another billion dollars in development funds.
The sheer number of people looking at starship’s delays and cost overruns and not seeing the exact same issues SLS had with Boeing are kind of staggering.
If you think that Starship has the exact same issues that SLS has you’re truly stretching reality. A billion dollars and two years is a TINY cost overrun compared to what they are doing. I know it sounds like a lot but for comparison, SLS costs like $2.5 billion per launch, not including development costs.
Also known as not an orbit, or a suborbital flight / trajectory.
Saying a suborbital flight is a partial orbit is like saying a cessna can partially achieve hypersonic velocities.
There is no public information indicating design on this variant has even begun.
… And Starship+Heavy Booster was supposed to have completed a succesful orbital flight in Q2 2022, per NASA’s contract with SpaceX.
Which it still has not done, in Q4 2024.
If SpaceX somehow completes an orbital flight of this thing in say Q2 2025, and keeps to the originally agreed contract timeline, well thats only 3 years behind schedule.
But this is Musk. Not the best track record on delivering on promises, more of a ‘pray i do not alter the deal further’ kinda vibe, but spoken with all the menacing intimidation of Darth Helmet.
So far he’s gotten a banana to suborbit in this thing.
…
I’ll eat a sock if a SpaceX launcher and lander gets human beings to the moon and back safely by the end of 2030.
Did I forget to mention Musk’s plan for a moon mission requires the Starship Lunar Lander variant to remain in Earth orbit, rendevouz and dock with and refuel from something like 12 or 16 other Starships?
… And there is also no publicly available information indicating actual design of this refuelling system either, just vague cgi concept arts of a plan?
I’ll eat two fucking socks.
I’m a space systems propulsion design engineer by profession. I worked on a project which I will not name that requires on-orbit refuelling. (It’s not this one and I don’t and will never work for Elon Musk).
The technology for in-orbit refuelling doesn’t exist, and there’s a whole lot of new technology required. Remotely docking is akin to self-driving in complexity; don’t forget to factor in the signal delay if you’re in a lunar or translunar orbit. If you make this a crewed activity only, then the problem becomes one of pneumatics. A pressure system that can reliably contain and transfer pressure up to the levels of spacecraft fuel (around 300 psi for liquid, 3000 for gas) repeatedly, in both directions is very, very heavy. The valves are heavy, the tanks are heavy, the control systems are heavy. Too heavy to be considered viable for spaceflight. Even less so for a mission whose payload is “as much transfer fuel as we can possibly get up there”. A huge amount of innovation has to take place before this can become real. As of 2022, when I last worked on this, none of the technology was even being researched, that is to say it was not even at TRL 3. Typically these things take on the order of a decade or so to get to TRL 9, if they are successful and quick.
I’m not saying it’s impossible, I’m saying I’ll be fascinated to see which solutions they come up with, and that I’m sceptical that they do have current solutions which are feasible and useful, rather than something like a one-shot refueling subsystem that weighs 250kg and delivers 15 litres of hydrazine.
So yet another government contractor with delays and cost overruns getting rich off the American tax dollar being feted by the Right.
Sounds normal.
Starship reached over 26000km/h, it had enough energy to be in orbit if it was in a circular orbit. The orbit was intentionally left eccentric enough that the perigee was within the atmosphere, so that a deorbit burn was not required.
This is a cessna going mach 4.99 and you’re being pedantic enough to say it was not hypersonic.
I agree with the rest of what you say though. As fun as it is to watch, Starship is over budget and behind schedule. Elon has over promised (pronounced “lied to get government subsidies”) on timelines and capabilities so much that it may jeopardize the Artemis program. Which makes me mad.
That’s not what OP was saying at all. He/she was pointing out calling the $100 in your pocket a “partial $1000” is just silly. So instead of saying “partial orbit” , the author should have I stead said “sub-ortial flight”. Their words, not mine - although I do agree. The tendency for journalists to over-exaggerate anybody’s claims is infuriating.
My point is that this flight wasn’t $100 out of $1000. It was $999 out of $1000. If the engines burned for a couple of seconds longer, it would have been a stable orbit. But their intended orbit was eccentric and had a low perigee, so that it would reenter after half an orbit.
Which means he’s successfully cornered the market and he hasn’t even launched his product yet! What a great billionaire, I’m sure he’s a great fit for a government position.
The hardest part of a real orbit is not burning up on re-entry. They skipped that part so far, for their most fragile rocket.
Are we talking about the same flight I watched today? It made it through re-entry and made a controlled, powered, soft splash down exactly where it was supposed to.
Ehhh, two years late for a rocket isn’t terrible. Space is hard.
But yeah 2030 is an aggressive timeline. I’m shocked NASA didn’t go for an Apollo-style service module and lander that gets assembled in-orbit, launched by Falcon Heavies. That seems like the least crazy architecture and requires very little new technology.
The original timeline NASA gave to SpaceX was to have a successful landing on the moon, with humans, and their safe return, in Q2 2025.
7 months from now.
…
You could theoretically refuel the S-IVb, the Apollo/Saturn V third stage, in LEO, with Falcon Heavies…
…assuming you redesigned both to do refueling in orbit, which has never been accomplished before with huge volumes of cryogenic fuel.
But you could not actually launch even a completely unfueled, completely dry S-IVb with a Falcon Heavy.
The S-IVb is about 22ft in diameter.
The Falcon Heavy’s final ascent rocket is about 12 ft in diameter.
There’s almost certainly no way that would be aerodynamically stable through launch.
The service module and lander are just too wide.
…
NASA did actually award another contract to Blue Origin (Bezos Private Space Program) for an updated, embiggened Apollo style lander.
https://arstechnica.com/space/2023/05/blue-origin-wins-pivotal-nasa-contract-to-develop-a-second-lunar-lander/
That’s going to be mated to a Locked Martin designed orbiter, and they’ll all launch on the SLS.
… Assuming the SLS does not also fall (further) behind schedule or suffer from quality control problems.
A whole lot of SLS is built by Boeing. Not doing so great in the quality control department lately.
But hey at least one of the things so far has actually completed an uncrewed lunar fly by!
…
To conclude: Yes, Space is indeed hard.
But uh, the last thing Musk said about Starship+Booster is that it will actually have… half… the originally promised payload capacity to LEO.
… and they’re going to making a Starship+Booster 2, that will have the original promised payload, and then a 3rd version that will have even more!
If you have to cut your effective payload capacity in half, thats a whole lot more than quality control problems, its fundamental design mishaps.
Yeah, the Starship was severely over-promised from the start, especially the payload capacity. I wish there had been more required demonstrations from the beginning, instead of just using the numbers promised by Musk, who is known to inflate numbers for marketing purposes.
Not to mention the assumption of orbital fuelling working perfectly without even doing any demonstrations at all or pointing to any existing technologies. It’s a very Kerbal Space Program idea but significantly more complex in reality. Especially as now they are planning 5+ refuelling missions per Starship going to the Moon, which is logistically baffling.
Or…Elon maybe was talking out of his ass when he came up with the original numbers? If he went wildly optimistic on the “if I tell them to do it we’ll do it” attitude it would explain it too.
They’ve also blown their entire development budget and have received another billion dollars in development funds.
The sheer number of people looking at starship’s delays and cost overruns and not seeing the exact same issues SLS had with Boeing are kind of staggering.
If you think that Starship has the exact same issues that SLS has you’re truly stretching reality. A billion dollars and two years is a TINY cost overrun compared to what they are doing. I know it sounds like a lot but for comparison, SLS costs like $2.5 billion per launch, not including development costs.
HLS is already in development at Boca chica
I assume China will put somebody on the moon before Musk’s meme rocket gets there.