Free Fall from Selene

Forum: SSI-List
Thread: Free Fall from Selene

# 15753 bySirch Namdig on Sept. 20, 2001, 12:47 p.m.
Member since 2022-08-22

So, If I'm reading correctly, the answer from both you and Mr. Radley
is a strongly affirmative "probably". This, in my opinion, is much
better than a definite "no".

Thank you.

Chris.

> I think aerobraking is the only way it could be done. But yes, I
> could
> conceive of a system where an electromagnetic launcher on the far
> side of
> the moon propels a small vehicle on an S-curve which contacted the
> Earth's
> outer atmosphere. Aerobraking could then be used to reduce the
> apogee to
> the desired altitude, and then at apogee a very modest thruster
> firing could
> be used to circularize the orbit.
>
> Regards,
>
> Mike Combs
>
> Hi,
>
> Is there an initial velocity and direction from the lunar surface
> that will ultimately lead to capture in LEO? Gut feeling says no,
> but I'm not too sure. If an object is falling toward earth and
> doesn't lose energy somehow, it's just going to whip around real
> fast
> (too fast) and go right back. (Assuming it doesn't impact.) But, I
> don't how the lunar pull figures in. Can anyone show me that such
> a
> trajectory doesn't exist?
>
> Can it be done with aerobraking?
>
> Chris.
>

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