Re: Lunar combat (was: Re: [OT] Moon Dragon Review?)
From: "Oerjan Ohlson" <oerjan.ohlson@n...>
Date: Wed, 6 May 1998 18:40:03 +0200
Subject: Re: Lunar combat (was: Re: [OT] Moon Dragon Review?)
Jerry Han wrote:
> Anybody want to actually do the calculations of the energy transfered
to
an
> airframe at impact on the moon versus that on the Earth? I don't have
any
> of my physics textbooks here at work. (Oerjan? (8-) )
While I have my physics textbooks at home, I have problems seeing them
(or
the 'puter, for that matter) - I operated my right eye to get rid of
(half
of) my near-sightedness yesterday, and don't expect to recover the next
few
days or so :-/ I'm sort of half-blind right now.
Anyway, as your question is formulated now - calculate the energy
transfer
on impact <g> - well... all of the kinetic energy will go into wrecking
your craft when it hits the ground, regardless of where you are :-)
However, your kinetic energy will of course vary a lot - depending on
the
strenght of the gravity well, how far up you started and your initial
downward vector (if any), the air friction (or lack thereof - and this
depends on how your craft is shaped and which aspect it turns in the
downward direction), etc. I'll try to do the calcs when I my eye gets
better (unless someone else beats me to it, of course!).
Later,
Oerjan Ohlson
"Life is like a sewer.
What you get out of it, depends on what you put into it."
- Hen3ry