Re: Galileo's antenna

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Article #3432

#3432

From: Dieter Kreuer
Date: Tue, 05 Jan 1993 08:35

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In article <1993Jan5.011705.29020@ee.ubc.ca>, davem@ee.ubc.ca (Dave
Michelson) wrote:

> The gain of a parabolic reflector decreases rather rapidly as its shape 
> deviates from an ideal paraboloid :-( 
>  
> Of course, if only a portion of the paraboloid is damaged, say the outer
> rim or an angular sector, and the rest is in prsitine condition, then
> the net gain is simply proportional to the portion which is intact.

Supposed that the stuck ribs may be freed, what are the odds that the 
HGA is permanently deformed due to having been suspended for such a 
long time? Is it flexible enough to regain its original shape? I have
never heard any mention of this.

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References: <4JAN199317595383@kelvin.jpl.nasa.gov> <726175452snz@chrism.demon.co.uk> <1993Jan5.011705.29020@ee.ubc.ca>

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From: dieter@informatik.rwth-aachen.de (Dieter Kreuer)
Newsgroups: sci.astro
Subject: Re: Galileo's antenna
Followup-To: sci.astro
Date: 5 Jan 1993 08:35:41 GMT
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References: <4JAN199317595383@kelvin.jpl.nasa.gov> <726175452snz@chrism.demon.co.uk> <1993Jan5.011705.29020@ee.ubc.ca>
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