SpaceX hasn't even had the confidence to put Starship in LEO yet, and has not carried 1kg of real payload (and barely a few kg of test payloads) - while SLS did an orbit of the Moon, with real payload satellites.
If you consider declared goals for Starship to be too hard (I assume not impossible), what aspect makes them that hard?
And since we talk about the Moon here, not stated goals of using Starships for Mars flights - what part of the Starship design makes it hard to believe that Starships may in next few years be regularly used for flights to the Moon?
I'm curious what it is which makes it so hard to believe.
I grant that SpaceX engineers are smart people and can figure out how to make Starship and Superheavy reliable and reusable.
But if they have to launch 10-14 times in order to get the propellant to the LEO depot in order to fuel the Lunar Starship, can we actually deliver that many launches worth of LOX and LNG to the launch pads in the timeframe needed to prevent it all from boiling off once in orbit before Lunar Starship can get there, get refueled and head to the moon? I don't know the answer to that, and to me that seems like the hard problem.
I’m disgusted with Musk and can still see that SpaceX is the best thing going right now.
Why do Starship launches explode? Because SpaceX is pushing the envelope in multiple directions at once. Why is SLS “reliable”? Because it’s doing absolutely nothing new whatsoever, and doing it at an appalling cost in dollars and time.
SpaceX launches 80% of the world's mass to orbit, they probably know what they're doing.
Starship is an extremely hard problem, and their aim is to reduce cost of getting mass to orbit by another 10x after Falcon 9 did the same.
Falcon 9 needs about 4% of fuel to land on a ship, 14% to return to launchpad
Why would you say they've had 100% failure rate? What did you think the reason was to launch and how did it fail?
Starship in contrast has a variety of meaningful objectives. Even if Starship only achieves proving that cryogenic fuel transfer in LEO is possible that's a valuable mission goal in and of itself.
If you really think "the whole moon thing is pointless" NASA is pointless.
They are great at pretending to deliver value, but there's no "there" there.
IMO the Blue Origin hate was overhyped. They're clearly the only ones who know what they're doing. NASA and SpaceX both are way in over their heads.
The SLS has already proven it can fly to lunar orbit and back on one single launch. In contrast, even if everything goes according to plan, Starship requires at least a dozen re-fueling flights while it hangs in orbit around the Earth to be able to then fly to the Moon.
Will one Starship launch, when it eventually works, be cheaper than SLS? Very likely. Will 12+ Starship launches + the time in orbit be cheaper than a single SLS launch? Much, much less likely.
To OP's point, Artemis has cost $92 billion over 14 years. This has produced exactly one launch.
It's hard to put an exact timeline on Starship since a lot of its development overlaps with Falcon 9 using the same components, but it's inarguable that it has cost one tenth Artemis so far.
I agree that Starship has been plagued by delays and the capabilities are so far mostly just talk. However, it has flown a number of times, and I would be willing to make a strong bet that it will orbit the moon with real payload long before it catches up to Artemis in budget.
lol what? They've caught and successfully reflown the super heavy booster, and they've mostly successfully done a soft landing of Starship in the sea. How is that remotely "just talk"?
Yes they've reflown a caught rocket, and they've soft landed in the ocean. I can do those things with a paper airplane.
The Chinese are basically going to launch a few astronauts up there with a modern Saturn 5. But for them that would be a success because it is their first time.
You only get to land on the moon once before people stop giving a shit.
Depends on what happens once on the moon. If all you do is send 2 people at a time to collect rocks, then it does get boring to the general public. If each landing assembles the next section of a moon habitat, then I think the interest sticks around longer.
If America (or China) says the best spots on the moon belong to America (or China), suddenly it's Space Race 2.0 and everyone cares.
This is what will happen once any building actually starts happening.
This idea is captured nicely in the book "Art and Fear" with the following anecdote: "The ceramics teacher announced on opening day that he was dividing the class into two groups. All those on the left side of the studio, he said, would be graded solely on the quantity of work they produced, all those on the right solely on its quality.
His procedure was simple: on the final day of class he would bring in his bathroom scales and weigh the work of the “quantity” group: fifty pound of pots rated an “A”, forty pounds a “B”, and so on. Those being graded on “quality”, however, needed to produce only one pot – albeit a perfect one – to get an “A”.
Well, came grading time and a curious fact emerged: the works of highest quality were all produced by the group being graded for quantity. It seems that while the “quantity” group was busily churning out piles of work – and learning from their mistakes – the “quality” group had sat theorizing about perfection, and in the end had little more to show for their efforts than grandiose theories and a pile of dead clay."
If we're putting humans into rockets into space, I'd like to think we adopt a balanced approach.
And it works because we all know that repetition and practice are, in fact, important. So it feels believable that having people just repeat something over and over is the answer.
Similarly, people can be swayed by the master coming in and producing a single artifact that blows away everyone. You see this archetype story as often as the student that learns by just repeating a motion over and over. (Indeed.... this is literally the Karate Kid plot...)
The truth is far more mundane. Yes, you have to repeat things. But also yes, you have to give thought to what you are doing. This is why actual art classes aren't just "lets build things", but also "lets learn how to critique things that you build."
The current Starship launches are part of a development and testing program. They expect quite a few failures (though probably not as many as they've experienced). But since each Starship launch is only 1/25th the cost of an SLS launch, SpaceX can afford to blow up a lot of them. And they won't put people on them until they have a track record of safe operation. Falcon 9 didn't have crew on it until the 85th launch.
1. The number of landing attempts is higher than the number of launches because Falcon Heavy results in multiple landings per launch.
NASA/Congress pushes the armchair quarterback approach. Analyze forever, fail because analysis isn't the same thing as real world experience, get stuck using 50 year old rocket technology. Each engine on SLS cost more than the entire Starship super heavy launch vehicle.
By weight the RS-25 engines cost about 70% of that of building their 7000lb mass dry mass out of gold. That's insane.
Challenger was lost because NASA ignored a critical flight risk with the SRB joint O-rings. And by "ignored", I mean "documented that the risk existed, that it could result in loss of vehicle and loss of lives of the crew, and then waived the risk so the Shuttle could keep flying instead of being grounded until the issue was fixed". They didn't need more unmanned testing to find the issue; they needed to stop ignoring it. But that was politically unacceptable since it would have meant grounding the Shuttle until the issue was fixed.
Columbia was lost because NASA ignored the risks of tile damage due to their belief that it couldn't be fixed anyway once the Shuttle was in orbit. But that meant NASA also devoted no effort to eliminating the risk of tile damage by fixing the issue that caused it. Which again would have been politically unacceptable since it would have meant grounding the Shuttle until the issue was fixed.
Should such testing have been needed? No.
Was such testing needed, given NASA's political pressures and management? Maybe. Unmanned testing in similar conditions before putting humans on it might've resulted in a nice explosion without loss of life that would've been much harder to ignore than "the hypothesizing of those worrywart engineers," and might've provided the necessary ammunition to resist said political pressures.
The loss of the Challenger was the 25th manned orbital mission. So we can expect that it might have taken 25 unmanned missions to cause a similar loss of vehicle. But what would those 25 unmanned missions have been doing? There just wasn't 25 unmanned missions' worth of things to find out. That's also far more unmanned missions than were flown on any previous NASA space program before manned flights began.
Even leaving the above aside, if it would have been politically possible to even fly that many unmanned missions, it would have been politically possible to ground the Shuttle even after manned missions started based on the obvious signs of problems with the SRB joint O-rings. There were, IIRC, at least a dozen previous manned flights which showed issues. There were also good critiques of the design available at the time--which, in the kind of political environment you're imagining, would have been listened to. That design might not even have made it into the final Shuttle when it was flown.
In short, I don't see your alternative scenario as plausible, because the very things that would have been required to make it possible would also have made it unnecessary.
That doesn't follow. If those were unmanned test flights pushing the vehicle limits you can't just assume they would have gone as they actually did.
As far as the launch to orbit, which was the flight phase when Challenger was lost, every Shuttle flight pushed the vehicle to its limits. That was unavoidable. There was no way to do a launch that was any more stressful than the actual launches were.
Which mission are you referring to?
If it's STS-1, AFAIK there were no close call incidents during the actual flight, but the mission commander, John Young, did have to veto a suggestion to make that mission an RTLS abort instead of an actual orbital flight. Doing that would have been reckless, yes: Young's reason for not doing it was "Let's not practice Russian roulette."
One thing I wonder about is whether it would have been possible to test the flap while in orbit, to see if the hydraulic lines were actually ruptured or not.
I have no skin in this game other than to say the old school methods resulted in a janky ship that stranded two astronauts in space for months until they could catch a ride home on a SpaceX ship.
What SLS currently has achieved had been achieved by Falcons and Dragons years ago, only way more cheaply and successfully.
No matter what we may think about Mr Musk, SLS is dead end.
The ability to pick a small-but-well-defined goal as an interim milestone - and stay focused on it - is a key skill, and too often I've seen waterfall-like companies slowly scope-creep their first MVP until it's a lumbering mess. You almost always need someone with a strong personality to push team to 'get it done', and that level of ownership is really hard to come by in an organization historically built around ass-covering.
I think Commercial Crew is the right model for NASA. Pick the design objectives, provide some level of scaffolding regulation (i.e loss-of-crew calculations), and then contract out to private sector to actually 'get it done'. (Yes Starliner was a failure, but Dragon is definitely a success. A 50% hit rate and success of the program overall is better than Artemis)
> I wonder if NASA could start to adopt SpaceX like approaches? Where one doesn't try to get everything correct before acting?
My understanding is the difference is politics. The US political system is dysfunctional, and so riven by anti-government factions, that there's too much pressure to not fail.
If NASA tried the SpaceX approach, after the second rocket blew up NASA's administrator would have been hauled in front of Congress and interrogated over the "waste of taxpayer money" and then the program may get canceled.
They should not adopt spacex practices, they should adopt spacex lift vehicles (once proven).
that would be such a culture change you'd have to disband NASA and start it over.
It's a risk-averse culture for a reason.
Regardless, first thing it reminded me of was that interview quote about how if nasa had SpaceX track record they would have lost funding long ago. Is there a US political landscape, even back to 2008-2016, where that isn't the case?
The only thing SpaceX truly has an edge is its engines.
They have perfected the engine for a ship like a giant Mars class rockets. And that engine has been in full scale series production for years, while the actual Starship keeps blowing up. The reason they developed their hoverslam landing technology, also, was because they wanted their precious engines back.
It's as if they handed groups of gamers a credit card and they went onto plunder stocks of RTX cards from 20 miles around with some Roombas bought on reward points. It's just inches below the threshold for typical BS detector if it weren't specifically tuned for the relevant topics.
All makes sense if everything was an elaborate ploy to get someone to pay for specifically the engines.
correction: there are 16 RS25's left, but production has begun on more for the Artemis V mission. However, production is slow so they can't just yeet SLS's into space and test rapidly.
The risk profile is very different.
inexact quote: "You know, we're throwing towns into the sky" related to the early mishaps of R-7 program development, but they kept doing it. After that R-7 derivatives became the most reliable launch vehicle.
[0] https://www.nasa.gov/history/history-publications-and-resour...
I have not looked at the source (in Russian) for several years; now that I am curious I will check at home tonight. But as far as I remember "we are shooting towns into the sky" remark was not in reference to the R-7, but in reference to N1-L3, a hellishly expensive competitor to the Apollo manned Moon mission rocket. The meaning of the phrase was that each and every test should be taken extremely seriously as the cost of each flight is comparable to the cost of building a new city.
R-7 was developed much earlier when Korolev and his team at OKB-1 were iterating rapidly on much cheaper models that were primarily funded as rockets for strategic thermonuclear strike warheads. The civilian (Sputnik and later Gagarin) flights were an offshoot of that and were small enough that it happened as a side project. R-7 was a comparatively simple and cheap design, which may be why that family became a workhorse from the late 50s to carrying crews to the ISS. And the super expensive N1-L3 was a stillborn.
That's my recollection, need to recheck the sources.
Have to reread it too.
Still, while R-7 was initially funded as ballistic missile system, that was abandoned quite early, since it was very unwieldy, basically unusable.
Ballistic program in OKB-1 continued separately resulting in superchilled-LOX R-9.
N1 failure is attributed mostly to Korolev - Glushko rivalry that resulted in N1 lacking engines in time. It is widely belived that Kuznetsov bureau delivered just a bit too late - Korolev died, Moon race was lost and N1 project was literally buried.
EDIT: Mishin (OKB-1 head after Korolev) had no administrative push, and Glushko ended up heading it and building Energia-Buran. It's all a sad story of unchecked emotions leading to monumental waste.
That is a viable version. But I think this was one of the problems and there were plenty of others. While Chertok does point to the engines as a major problem, he also admits that the whole system became way too complex to succeed.
His description of electrical components (for which IIRC he was the chief engineer) and checkouts is telling. He also describes the feeling of "good envy" as the Russian engineers were listening in on comms between the Earth and the Apollo 13 during its mission. Which drove home the point of how much advantage US had, at least in electronic, and how powerful it was for its successful lunar program.
> It's all a sad story of unchecked emotions leading to monumental waste.
I have a softer view. Both Korolev and Glushko wanted their own leadership, which is normal. Korolev ran his shop in a dictatorial fashion, as that was the only way he could operate efficiently. Which is also fine and can produce spectacular results (and it did early on). But it comes with its own risks, including motivating strong leaders to branch out. I would not call it unchecked emotions that Glushko, after many years at OKB-1 went to run his own projects.
Living in a someone's shadow while under his dictatorial control is not for everyone. I can see the arguments for both sides. My 2c.
NASA's approach to space exploration remains incredibly successful. Look at all the missions operating all over our solar system, including on Mars' surface, and beyond. No other organization comes close.
> I wonder which approach is more capital efficient? Which is more time efficient?
How we frame the debate - if you like, the specs that define the rfp - determines the outcome. You define it by efficiency, which is what businesses prioritize and is SpaceX's strength. They take a well-established technology, orbital launch, and make it much more efficient.
NASA prioritizes ground-breaking (space-breaking?), history-making exploration and technology - things never done before and often hardly dreamed of by most people. That can take time and money but they deliver at a very high rate - think of how many missions have failed, compared to recent private missions, such as moon missions, and even those of other space agencies.
The question is whether you have the appetite for killing three astronauts on a test run like the Apollo team did.
EDIT: Fine, I’ll clarify. By “SpaceX like approach” I mean iterative design. By “more aggressive” I mean risk tolerance much greater than SpaceX to the degree that they do things that SpaceX wouldn’t do.
Calling it a "SpaceX like approach" and connecting to Apollo 1 is a neat trick, but SpaceX wouldn't (and doesn't) adopt that risky approach during manned flights.
It's all about "the right risk for the job." You can't be risky with human safety, but you also don't want to be overly timid and failure-averse during safely managed R&D tests, or your R&D grinds to a halt.
NASA and SpaceX are fundamentally incomparable, considering how these two organizations are established and the motivations that drive all the actors within. Sure, NASA could start to adopt certain approaches but I don't imagine it to work in a way anyone else would imagine it to.
And don't compare costs because Starship does not and may never work so I dont care how much cheaper it is. If we are comparing fictional rockets I have a $1 rocket that can fly to Jupiter.
They purposely were not trying for orbit from my understanding. The last one did orbit the earth at suborbital heights and release satellites. It did seem to do what they wanted it to do, it wasn't a failure.
Every time you see a Starship launch what you aren't seeing is manufacturing processes corrected, issues in launch protocols and field issues resolved. All the little things that build up to make your system reliable. Do you want the doctor who has done a hundred successful surgeries, or the one who has done one or two but spent a long time in school watching videos.
The big difference is in the end, Starship gets built faster, costs much less, and can do more. It's not even close.
This seems so ridiculous in the abstract. Like, what is that exactly supposed to entail in the context of launching rockets?
The cost of going from "I think this will work" to "I know this will work" is really expensive. It might be cheaper/faster to fail a few times and fix those problems than it would be to verify everything up front.
That is such an ignorant thing to say. You think Falcon 9 has had 500+ successful launches because they _think_ it will work?
The difference is that SpaceX is a private company that has the ability to iterate fast. NASA is a jobs program and Artemis/SLS a barrel of pork, simple as that.
SpaceX might design and build the nozzle, then put it in the rocket and launch it. It might work how they intended, or it might not, but they'll find out immediately. They'll make changes, build a new nozzle, launch another rocket, and continue until it works like they want.
NASA will do a lot more testing, simulation, redesigning, etc. until they KNOW that the nozzle will perform perfectly on the first try.
On the surface, NASA's approach sounds cheaper because you aren't wasting rockets. In reality it looks like SpaceX's approach might be better.
All components go through several test campaigns on the ground, while iterating on the design to address issues. These campaigns take months/years. That's why changes are stacked into "blocks", which are the equivalent of rocket versions. Each block must be certified by the Air Force and NASA to be deemed worthy of flying their payloads.
So while you're right that SpaceX doesn't typically do this sort of thing, NASA did pay them to fly an untested nozzle design.
1. https://en.wikipedia.org/wiki/SpaceX_COTS_Demo_Flight_1
2. See the section titled "Snipping the nozzle" at https://arstechnica.com/science/2020/06/forget-dragon-the-fa...
And we 'tried until it didn't blow up immediately' is not a great sign.
But everything that didn't blow up has been tested 11 times already. Things that did fail have had more than one design iteration tested. One approach has gains more real-world test experience.
JPL would blow up a rocket every week, if the budget had room for it. Alas, we don't see that testing pace outside defense procurement.