I see! And this sort of device could perhaps also be used in space.
There without air resistance, it should be possible to let a system
gradually rotate very fast and then to release a probe with great
velocity.
On 11-12-2021 15:05, John Clark wrote:
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? [1]
John K Clark See what's on my new list at Extropolis [2]
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]
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[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]
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[4]
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[3].
Links:
------
[1] https://www.youtube.com/watch?v=JAczd3mt3X0
[2] https://groups.google.com/g/extropolis
[3]
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