On Sat, Dec 11, 2021 at 7:39 AM smitra <[email protected]> wrote: > > > > > > > *In fact, it's impossible to reach orbit this way, as any orbit would have > to contain the point it left the device from and it would have to have the > same velocity vector there (in a inertial coordinate system in which the > Earth rotates). So, any such orbit would have to cross the Earth's surface. > A rocket motor has to be used after launch to change the orbit. A > hyperbolic escape trajectory is, of course, possible without using a rocket > engine.* >
The article does say "a booster affixed to the payload will then give it an extra push to guide it into its orbit". If you gave the payload a small kick when it's at its high point in its orbit you could raise its low point enough to avoid the atmosphere. And if you could just give it enough of a headstart that a one or two stage rocket could do the work of a three stage rocket that would be a huge advantage Can Spinlaunch Throw Rockets Into Space? <https://www.youtube.com/watch?v=JAczd3mt3X0> John K Clark See what's on my new list at Extropolis <https://groups.google.com/g/extropolis> pio > > On 11-12-2021 00:29, 'Brent Meeker' via Everything List wrote: > > Going up "tens of thousands of feet" is only a tiny part of energy > > needed for low Earth orbit. > > > > Brent > > > > On 12/10/2021 2:04 PM, John Clark wrote: > > > >> SpinLaunch: Company hurls satellites into space using giant, > >> spinning machine [1] > >> > >> John K Clark See what's on my new list at Extropolis [2] > >> > >> slx -- > >> You received this message because you are subscribed to the Google > >> Groups "Everything List" group. > >> To unsubscribe from this group and stop receiving emails from it, > >> send an email to [email protected]. > >> To view this discussion on the web visit > >> > > > https://groups.google.com/d/msgid/everything-list/CAJPayv0WVEk67zPE7UQW9zmwaxpGypJ2gWJ74KOTerdZsOX98w%40mail.gmail.com > >> [3]. > > > > -- > > You received this message because you are subscribed to the Google > > Groups "Everything List" group. > > To unsubscribe from this group and stop receiving emails from it, send > > an email to [email protected]. > > To view this discussion on the web visit > > > https://groups.google.com/d/msgid/everything-list/46515871-c075-ccdf-db3c-221b410c9981%40verizon.net > > [4]. > > > > > > Links: > > ------ > > [1] > > > https://bigthink.com/the-future/spinlaunch-company-hurls-satellites-into-space-using-giant-spinning-machine/?utm_source=mailchimp&utm_medium=email&utm_campaign=weeklynewsletter > > [2] https://groups.google.com/g/extropolis > > [3] > > > https://groups.google.com/d/msgid/everything-list/CAJPayv0WVEk67zPE7UQW9zmwaxpGypJ2gWJ74KOTerdZsOX98w%40mail.gmail.com?utm_medium=email&utm_source=footer > > [4] > > > https://groups.google.com/d/msgid/everything-list/46515871-c075-ccdf-db3c-221b410c9981%40verizon.net?utm_medium=email&utm_source=footer > > -- > You received this message because you are subscribed to the Google Groups > "Everything List" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > To view this discussion on the web visit > https://groups.google.com/d/msgid/everything-list/f661bdb27927ce32521a2fca9f97471f%40zonnet.nl > . > -- You received this message because you are subscribed to the Google Groups "Everything List" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/everything-list/CAJPayv346eJzYm1WKP3aD5cEku3fOhcMrQV_Dog7HUr7p5itcA%40mail.gmail.com.
