[amsat-bb] Re: Less than lightening Results
Nigel Gunn G8IFF/W8IFF
nigel at ngunn.net
Fri Apr 10 12:10:38 PDT 2009
> What makes AO-7 so special?
We're all sentimental.
Why is it that we lost AO-10, AO-13 and
> all the others in the past several years, yet this one is still
Different faults have different characteristics. This one lost it's battery which is now open circuit allowing the
satellite to operate from solar cells when it's in sunlight.
I know the batteries are dead, but I'm primarily interested
> in how this bird is able to stay in it's orbit for over 30 years? And
> if it's orbit is decaying, how is it that it has apparently decayed so
Most of the dead sats are still in orbit and being tracked. It's in a higher orbit than most amateur sats and, like all
the others in a similar orbit, will take many tens of years to re-enter.
> I was under the impression that unless a satellite is occasionally
> 'boosted', it will eventually re-enter?
Yes, but the higher the orbit, the longer will be "eventually"
I somehow doubt AO-7 has any
> fuel left in it's boosters; if it had any.
AO7, like most amateur satellites, never had any boosters.
Nigel A. Gunn, 1865 El Camino Drive, Xenia, OH 45385-1115, USA. tel +1 937 825 5032
Amateur Radio G8IFF W8IFF (was KC8NHF), e-mail nigel at ngunn.net www http://www.ngunn.net
Member of ARRL, GQRP #11396, QRPARCI #11644, SOC #548, Flying Pigs QRP Club International #385,
Dayton ARA #2128, AMSAT-NA LM-1691, AMSAT-UK, MKARS, ALC, GCARES, XWARN
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