Fw: Re: [amsat-bb] AO-40: Plans for April-June 2001

[Joseph Murray <k0vty@xxxxxxxx>]

Continuing possibly categories and thoughts:
 
Listing knowns and unknowns may help
 
That which has been previously proposed 
 
1.)        Loss of part or=20 all propellant mixture.
2.)        Loss of three vertical=20 antennas on the -Z side of the s/c
3.)        Loss of some sensors=20 ???
 
Possibilities
 
Connectivity of loss to current instability at perigee 
 
Uneven mass distribution due to propellent loss causing effect on=20
magnetorquing. 
 
Could whatever destroyed vertical antennas opened the s/c covering =
where=20 antennas mounted
causing a unlikely drag sail.
 
Lost of vertical antennas may not be physical loss and they are in =
some=20 fashion are causing a unlikely drag sail
 
Questions
 
Could the incorrect use of or undetected damage in Magnetorquing =
equipment=20 cause the unstable affect at perigee?
 
Could non spinning balance wheel(s) effect mass=20 balance?
 
What is the s/c location of sensors lost?
 
Enumerate ways vertical antennas could have been lost with interest in=
=20 perigee effect .
 
Can we verify Solar panels are not deployed .   Verify all = panels=20
are electrically operational?
 
I know nothing about orbital machanics guy's but any idea might help =
the=20 team.
 
No question at this time is a dumb question.    
 
73's 
 
Joe  K0VTY
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