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Mar 26, 2021 at 19:03 comment added jamesqf See for instance today's news articles about a SpaceX 2nd stage reentry over the western US/Canada: arstechnica.com/science/2021/03/…
Mar 24, 2021 at 15:32 comment added jamesqf Landing really isn't the problem, it's reentry. SpaceX can land their 1st stages vertically because they don't get close to orbital velocity, and thus don't have to withstand the high temperatures of reentry.
Mar 24, 2021 at 14:44 comment added Lesto Their engine is hi-tech, their material are hi-tech, their code is hi-tech (they use C++ and Javascript!), their sensors (MEMS) are high tech and did not exist like 20 years ago. But nothing is completely innovative, automated landing? done by CCCP in a time where computer where big as rooms. VTVL (vertical take off and landing)? explored and demonstrated in the 1960 (apollo landing!) and multiple other rocket later. Even blue origin had Goddard before spacex's grasshopper. What spacex did was to manage to concrete those idea in a product in a economical way, an incredible feat by itself
Mar 24, 2021 at 7:42 comment added Anixx @LorenPechtel well, at least in the field of computer control of flight they are hi-tech.
Mar 24, 2021 at 2:10 comment added Christopher James Huff @LorenPechtel or did so in a very constrained way. The Raptor is pushing the boundaries of the state of the art, and they're using some high-end robotic welding machines. However, those machines are welding stainless steel with pretty bog-standard techniques, and they didn't even start on that until they were sure that Raptor would do the job.
Mar 24, 2021 at 1:45 comment added Loren Pechtel @RussellBorogove I would say the dramatic success of SpaceX is that they didn't try to go high tech.
Mar 23, 2021 at 22:50 comment added Russell Borogove @ChristopherJamesHuff That's fair -- revolutionary market execution of evolutionary tech in both cases. IMO SpaceX's genius stroke thus far was in deciding to build a commercially viable expendable launcher and develop it into a partially reusable on their customers' dime.
Mar 23, 2021 at 21:17 comment added Christopher James Huff As I see it, the most "revolutionary" aspects of Starship are 1: they're not relying on some super-advanced technology that will cost billions to develop, and 2: they're actually executing on it, in a field where the established players were comfortable with the status quo. Much the same goes for another business of Elon's: Tesla isn't taking advantage of some revolutionary advance that has just enabled electric cars, it's just executing on something the established car makers didn't care to do and in fact were actively resisting.
Mar 23, 2021 at 21:05 history edited Russell Borogove CC BY-SA 4.0
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Mar 23, 2021 at 20:03 history edited Russell Borogove CC BY-SA 4.0
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Mar 23, 2021 at 19:58 comment added Anixx A lot of projects of the past indeed proposed full reusability via airstrip landing or parachutes. It seems though the vertical landing is the only option, compatible with travel to other planets.
Mar 23, 2021 at 19:56 history edited Russell Borogove CC BY-SA 4.0
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Mar 23, 2021 at 19:47 history edited Russell Borogove CC BY-SA 4.0
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Mar 23, 2021 at 19:39 history answered Russell Borogove CC BY-SA 4.0