Abmd70.165
net.columbia
utzoo!decvax!duke!bmd70!jcp
Tue Nov 10 00:40:57 1981
STS 1 vs STS 2
A summary of mission differences from STS 1 to STS 2
Item STS 1 STS 2 Comments
Orbit Inclination 40.3 deg 38.0 deg Required for added
ascent performance.
Altitude 150 nm. 137 nm Lowered to offload
OMS propellent
Acscent Max Q 610 psf. 640 psf. Test program
Acscent Madrid Coverage 4.6 min 2.2 min Lower inclination
and altitude
Abort to Rota, Spain NO single SSME 5 sec abort Contigency Manual
out required region procedure
Abort once around site Northrup AFB Edwards AFB Lower inclination
Flight Duration 54.5 hr. 124.2hr Lower than expected
1, one added cyrogenic
fuel tank
Post deorbit Guam 7.1 min 2.9 min Lower inclination
tracking
Cargo Dev. flight + OSTA-1,RMS OSTA-1 - Earth viewing
instruments IECM RMS - remote manipulator
IECM - Induced environ-
ment contam. monitor
On-orbit Tests None RMS, Backup orbit navigation,
Payload pointing, OSTA-1
Entry Tests None Test Manuevering, autoland to preflare,
possible crosswind landing
This was digest from the November 9th issue of Aviation Week and
Space Technology.
Another Columbia note:
The APU oil problem was explained as leakage of hydrazine fuel
around a carbon gasket into the oil, causing a chemical reaction which
produces a soapy, waxy polymer chain, which clogs the oil filter, causing
it to be bypassed automatically, which will work, but is hazardous.
APU 2 was not affected by this problem, as it was a replacement
for an APU which malfunctioned during STS-1 flight.
Aviation Week Note:
If desired, I will submit a summary of the latest stuff in
AW&ST each week, as I get it anyway, and am a regular net user.
-Joe Pistritto-
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