| T.R | Title | User | Personal
Name | Date | Lines |
|---|
| 258.1 | | MONSTR::HUGHES | Gary Hughes | Mon Feb 16 1987 13:03 | 11 |
| The original Soyuz used propellants that were somewhat corrosive
which I think wass a factor in limiting its operational life. It
is reasonable to assume the Soyuz-T and -TM use the same propellants
so they probably face the same time limits.
In the event of a countdown abort after the Soyuz tanks have been
pressurised, they have to purge and check the tanks before recycling
the launch. This is one of the gating factors in the turnaround
time.
gary
|
| 258.2 | Different tankage | VMSDEV::FISHER | Burns Fisher 381-1466, ZKO1-1/D42 | Sat Feb 21 1987 16:56 | 6 |
| The Soyuz TM has changes in the fuel tanks. They used to have a
rubber-like diaphram (separating the oxy from the fuel? or the
contents from the ullage?). This has been changed to something
more stable. This change may increase the life of the beast in space.
Burns
|
| 258.3 | | VINO::DZIEDZIC | | Sun Feb 22 1987 18:49 | 6 |
| The diaphragm is used to separate the oxidizer and fuel (different
tanks, of course) from the gases used to pressurize the tanks.
The gas was difusing through the liquid oxidizer/fuel and causing
changes in the behaviour of the material. Yes, it is intended to
increase the amount of time the tank may be pressurized.
|
| 258.4 | PROGRESS 28 SENT TO MIR (AND MORE) | EDEN::KLAES | Fleeing the Cylon Tyranny. | Mon Mar 09 1987 11:24 | 36 |
| Newsgroups: sci.space
Path: decwrl!decvax!ucbvax!ll-vlsi.UUCP!glenn
Subject: Soviets send PROGRESS 28 to MIR space station
Posted: 6 Mar 87 16:59:01 GMT
Organization: The ARPA Internet
The Soviet Union announced today (March 3) that a PROGRESS 28
cargo spacecraft had been launched to their MIR space station. The
craft contains about 1.5 tons of fuel, air, water, supplies and
instruments. PROGRESS 27 was just undocked last week after the
current SOYUZ TM-2 crew had unloaded it. This means in the last year,
MIR has been visited by four PROGRESS vehicles, two space crews (with
the previous set leaving the station to visit the SALYUT 7 space
station, then returning), and one unmanned test vehicle (SOYUZ TM-1).
I suspect that this current crew will still be in orbit for the
October 4 date of the thirtieth anniversary of Sputnik 1. It has been
announced that they will be visited by an Intercosmos crew containing
a Syrian cosmonaut on July 22. Also, the West Germans have just
signed an agreement with the Soviets that includes preliminary
preparations for them flying a cosmonaut to MIR.
It certainly appears that the Soviets are not standing still in
space. Meanwhile we have the Congressional Budget Office wanting to
kill both the Space Station and the replacement Space Shuttle Orbiter.
Even those that are supporting the NASA Station are talking about a
man-tended system now to keep the cost down (they will have to spend
2-3 billion dollars to develop a safety capsule otherwise, which of
course the Soviets do not have to worry about - they already have
one). Just ask yourself this - which nation is showing itself to be a
truly space-faring civilization at the moment? Hopefully, that will
change in the near future [Or, better yet, the space-faring nations
will learn to cooperate for the benefit of all - LK].
Glenn Chapman
MIT Lincoln Lab
|
| 258.5 | Astrophysic Mod coming up | IMNAUT::BIRO | | Fri Mar 27 1987 09:41 | 25 |
| PROGRESS 28 has been seperated from MIR , RM announced yesterday
(thur) and that the ASTROPHYSIC MODULE will join them in a few days
but I would assume to do this that the crew will have to close
down MIR pack up TM2 and move TM2 to the back docking port
then unpack TM2, This is in case they could not redock.
they then have MIR in a safe state and all the results of
experiments with them to bring back to earth.
The reason to go to all this trouble is the fact that only the
front and rear docking ports can be dock under computer control
and only the front port is in reach of the robot arm
The TM2 unit is now on the front docking port
but one other possiblility , and EVA and maunal docking. I
have seen changes in the orbit of MIR almost every day, its
seems like the crew is learning to FLY MIR. Even RM announce
that the crew had pass on info to the next crew on how to
contorl MIR, but this is unlikly
IN the mean time with P28 being jetterson , a possible TM2 move,
and and new large module on its way MIR will be a very interesting
obj to do a visulal sighting, it is present a good visual view on
the east coast of the USA just before dawn.
jb
|
| 258.6 | 9 months | IMNAUT::BIRO | | Fri Mar 27 1987 10:14 | 2 |
| the crew will be up for nine months according to RM
|