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Re: Leaking out the nozzle



It is somewhat hard to think about these highly
elliptical orbits, but it is a percentages game.

At perigee, the loss of velocity due to the mass
loss is TINY as a percentage, compared to
the velocity loss as a percentage of the total
at apogee.

We are really whipping by the earth at perigee
as you can tell from Doppler curves, and other
things you normally look at, including ground
tracks, etc.

Bob
N4HY

----- Original Message -----
From: "Joseph B. Fitzgerald" <jfitzgerald@alum.WPI.EDU>
To: <amsat-bb@amsat.org>
Sent: Tuesday, January 09, 2001 1:18 PM
Subject: Re: [amsat-bb] Leaking out the nozzle


> Keith wrote:
>
> >>Re-orientating the spacecraft 180 degress would reverse the current loss
>
> >>of perigee altitude.
>
> Keith,
>
> Expanding on this a bit ... if we reorient 180 degrees, wouldn't we also
> lose a bit of apogee alt?  Since the spacecraft spends most of its time
> near apogee, I suppose the effect on perigee would be greatest though.
>
>
>
>
> -Joe KM1P
> ----
> Via the amsat-bb mailing list at AMSAT.ORG courtesy of AMSAT-NA.
> To unsubscribe, send "unsubscribe amsat-bb" to Majordomo@amsat.org
>

----
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