Comment by tsimionescu
1 day ago
The Apollo program was inventing all of this technology, and using only extremely rudimentary computers, still doing many calculations with slide rulers.
SpaceX has all of the Apollo program's work to build on, and computers that could do all the computing work that the Apollo program ever made, in total, in probably a few minutes.
SpaceX is inventing quite a lot, there's more areas where they started greenfield than where they got help.
They are inventing a little, but the basics of rocket flight are now well understood. You can get a university (probably post grad) course on it. And nothing that they are doing is all that revolutionary, definitely not compared to what Apollo did (going from airplanes and ballistic missiles to orbital space flight and then Moon missions).
Consider that even reusable self-landings boosters were being worked on in the 90s, before funding was cut off. And for expandable rockets, virtually all rockets designed and launched in the last few decades have successfully accomplished their first ever flight, launching some kind of payload to orbit.
- "And for expandable rockets, virtually all rockets designed and launched in the last few decades have successfully accomplished their first ever flight,"
That doesn't resonate as true to me.
The first Ariane 5 flight blew up [0]. That Europe's current heavy-lift workhorse with 112 successful launches (including JWST), but the first one blew up.
The first PSLV blew up [1]. That's India's current workhorse with 58 successes, but flight #1 was not successful. Their GSLV did not reach its correct orbit on its first flight either [2], though it didn't blow up.
The first Delta IV Heavy did not blow up, but it failed to reach its correct orbit [3]. That was US' largest launch vehicle for most of the 21st century.
The first Long March 5 failed to reach its correct orbit, and the second one blew up [4]. That's China's current heavy-lift launch vehicle, since 2016.
South Korea's first orbital rocket RUD'd both its first flights, in 2009 and 2010 [5].
Japan's newest orbital rocket was launched in 2023, and that blew up [6].
Rocket Labs' Electron has a current >90% success rate, but the first one blew up [7].
[0] https://en.wikipedia.org/wiki/Ariane_5#Launch_history
[1] https://en.wikipedia.org/wiki/List_of_PSLV_launches#Statisti...
[2] https://en.wikipedia.org/wiki/List_of_GSLV_launches#Statisti...
[3] https://en.wikipedia.org/wiki/Delta_IV_Heavy#Launch_history
[4] https://en.wikipedia.org/wiki/Long_March_5
[5] https://en.wikipedia.org/wiki/Naro-1#Launch_history
[6] https://en.wikipedia.org/wiki/H3_(rocket)#Launch_history
[7] https://en.wikipedia.org/wiki/Rocket_Lab_Electron#Launch_sta...
6 replies →
this doesn't even scratch the surface. Slow motion cameras and real time sensors for debugging hardware issues, computer simulations, 3d printing.
Apollo program directors would advocate to start a nuclear war with ussr if they could get hands on that kind of tech.
But also NASA landed two SUVs on mars first try, using skycrane, Full remote. they developed and built mars helicopter/drone (rip). First try. But spaceX gets the glory because... break things??
Apollo program was a major achievement, probably the largest in the history of humanity as of yet. But SpaceX definitely should get a credit for "breaking things", or for running agile dev cycle with hardware ("hardware heavy"). Let's just strap engines to a fuel tank and try to fly it. Let's just build a body by welding steel plates together and see what happens. Let's just launch this thing to 20 miles and see if we can make it aerobrake and land it with the engines. Iterate by learning and constantly improving. Nobody done it at that scale as of yet.
(Which of course is only possible if you have the Founding Father with a few billion $$ just laying around)
This seems like a fairly disingenuous comment.
SpaceX gets credit and rightly so because they have achieved things which no national space agency nor private company has ever done before, and done it faster and at a lower budget than anyone has done before.
Every other national space agency and private company had both infinitely more money, time, and engineers than SpaceX did (when founded) yet they were making zero progress on reusable rockets, cheap super heavy lift capacity to orbit, and America had no way of taking their own astronauts to the space station!
Musk (hate him or love him) founded a company from nothing which has exceeded the capabilities of nasa and the us government, the European space agency, and the russian space agency, as well as ULA, Boeing, Lockheed etc.
They have the first rocket ever made which can take payloads to orbit and then be reused. They have the most cost effective rocket ever made for taking loads to orbit. They have reused rockets up to 20 times! They have build the most powerful rocket ever built which is fully reusable. They have built the most efficient and powerful rocket engines ever built before. And they have done it all incredibly quickly starting from nothing.
Oh and they also built a massive internet constellation providing fast and cheap satellite internet to the whole world, saving countless lives and also helping stimulate economies across the world as well as enabling more remote work etc.
So much of what they have done was considered impossible or not economical or not practical or so difficult other countries or companies didn’t even TRY.
So yes. Given their success it’s worth trying to understand their development methodology, which is iterate fast and fail lots and learn lots. Given how much they’ve kicked the shit out of the SLS program in capability and budget and also how they’ve crushed Blue Origin (which started earlier with more budget) who both operate in a more old fashioned way, I would certainly say it’s important to acknowledge they may be doing something right!
The achievements you quote are highly overblown. SpaceX sells capacity to orbit somewhat cheaper than anyone else on the market, but not by some huge margin - half the cost or so, at best.
They also don't have any fully reusable rockets today, and Starship is still probably a year or more from being production-ready. It remains to be seen how reusable Starship will actually be, how long it will take to refurbish and get ready for spaceflight, and how many reentries it can actually take. And it still remains to be seen how much Starship will actually gain from being fully reusable, by the way - landing a rocket costs lots of extra fuel, so it's not a no-brainer that a fully reusable rocket would have a much better cost/kg-to-orbit than a non reusable one. Especially for anything higher than LEO, Starship can't actually carry enough fuel, so it depends on expensive additional launches to refuel in orbit - a maneoveur that will probably take another year or more to finalize, and that greatly increases the cost of a Starship mission beyond LEO.
Finally, Starlink is nice, but it's extremely expensive for most users outside very rich areas of the world, and has in no way had the impact you are claiming. Laying out cable internet is FAR cheaper than satellite internet can ever be, especially in rural areas, so beyond cases where cables and even wireless are completely impossible (ocean, war-torn areas), it doesn't and won't ever have any major impact. I'm also very curious where you got the idea that it "saved countless lives".
11 replies →
This reads like propaganda.
> They have the first rocket ever made which can take payloads to orbit and then be reused.
The space shuttle did this over 40 years ago. You can argue SpaceX have the first economical one 40 years later, but the second stage isn't reusable. Once they get starship working they might have it.
Their finances aren't public but there is some stuff to go on where we can say Falcon is probably economical despite not recovering the second stage.
This TED talk from Gwynne Shotwell says they will have reuse of starship so dialed in that in 3 years (from now) they will be competitive with commercial airliners and be operating for consumers in production:
https://www.ted.com/talks/gwynne_shotwell_spacex_s_plan_to_f...
To be safe enough for that I would have expected thousands of flawless flights by now. They said in 2020 it was still on track for 2028 but the Dear Moon project was canceled since that last update.
7 replies →
> SpaceX gets credit and rightly so because they have achieved things which no national space agency nor private company has ever done before
Such as?
7 replies →
> But also NASA landed two SUVs on mars first try, using skycrane, Full remote. they developed and built mars helicopter/drone (rip). First try. But spaceX gets the glory because... break things??
NASA lost a good number of probes in the process of getting the expertise to do that.
And likely quite a few test devices in building out the skycrane.
citation needed
You cant be making shit up and equating a test to blowing up 7 rockets
5 replies →
SpaceX is a boon to NASA. NASA does great work but as they are a government entity they move at a slower pace.
SpaceX getting credit for innovating in their own way doesn't mean NASA doesn't get credit for all the great things it has done.