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Suggestions needed: Condensing steam in space by byblow
I need something that’s completely automated and can extract 100 tonnes of water per day from steam (does 100 tonnes of steam = 100 tonnes of water?). This...
October 16th 11 10:29 PM
by Keith Henson Go to last post
3 1,761
Suitsat - why so bad lifetime prediction? by Ian Stirling
Suitsat was widely predicted at the time to have lasted about 6 weeks before decaying. It lasted more than 6 months. Is this due to uncertainty of the...
October 18th 06 09:59 PM
by Ian Stirling Go to last post
0 1,433
Sun angle and spysats by Allen Thomson
There's a cute illustration of the tendency for optical spysats to have orbits optimized for, among other things, sun angle and time of day at...
December 6th 04 05:00 AM
by Hamish Go to last post
5 1,370
Sun Sensors for Attitude Determination by David Harper
I'm interested in developing a sun sensor (or maybe a horizon sensor) for a low-cost, amateur, high altitude project. However, I'm having some difficulty...
November 30th 04 10:50 PM
by greg Go to last post
5 736
Sun synchronous explanation by oriel36[_2_]
The common explanation for satellite 'precession' relies on planetary spherical deviation - " The uniformity of sun angle is achieved by tuning natural...
May 18th 09 05:41 AM
by OM[_17_] Go to last post
3 1,215
Sun-sync orbit? by MattWriter
The DARPA solicitation for the new FALCON small launch vehicle program specifies the requirement to put a satellite in "sun synchronous orbit" at 450 km at "79...
July 14th 03 10:31 PM
by Henry Spencer Go to last post
1 1,184
Surveying asteroids for metals, etc by [email protected]
Assuming we eventually wish to mine asteroids for useful materials, we would need to first do some prospecting. What is the best/most economical method? I...
July 4th 05 04:40 AM
by Henry Spencer Go to last post
4 619
TDRS Satellites by Paul Marsh
I don't know if this is the right group to post this question to, but I'll give it a try. Is there any way of knowing which two TDRS satellites are being used...
May 14th 04 03:51 AM
by Paul Marsh Go to last post
0 1,176
TDRSS ground station expansion? by Allen Thomson
I was looking at the original TDRSS ground station (32.502 N, 106.611 W) in Google Earth historical imagery and noticed that a substantial addition was made to...
June 8th 09 03:12 PM
by Jan Vorbrüggen[_2_] Go to last post
4 1,014
Technologies for Moon mission useable for missions further out by Alain Fournier[_2_]
Let's assume a new program for lunar missions is started. Let's also assume it is posited as Bush had did it, saying we are going to the Moon, and should go to...
(Multi-page thread 1 2 3 ... Last Page)
January 26th 11 02:12 PM
by Alain Fournier[_2_] Go to last post
46 7,137
Telemetry and Command References? by Martin Sagara
Can anyone recommend a good textbook or reference on spacecraft telemetry and commanding? I've looked at the CCSDS handbooks but found them a little terse and...
August 23rd 03 04:48 AM
by John Q. Go to last post
1 1,950
Tell me about the LEM by Richard Lamb
The Lunar Lander has always fascinated me. The first (and only) manned spacecraft to land on another world. Not being a part of that part of history, I don't...
April 9th 04 09:33 AM
by Heinrich Zinndorf-Linker (zili@home) Go to last post
5 440
Terminal Velocity by Niobium
We all know the NASA method of re-entry Big shower of sparks and that's the scientists on the ground. However, given a vehicle of 40,000 LB or ...
(Multi-page thread 1 2)
December 10th 12 06:23 PM
by props Go to last post
11 4,006
Testflight by K. Larsen
I heard Nasa are testing the scram Jet mach 7 machine soon. It is supposed to such oxygen out of the atmosphere at some 10's of thousands of meters...
March 28th 04 02:34 PM
by Mike Miller Go to last post
4 536
Testing again by Greg D. Moore \(Strider\)
-- Greg Moore Ask me about lily, an RPI based CMC.
March 20th 09 05:32 PM
by [email protected] Go to last post
1 899
Testing Moderation of sci.space.tech by Greg D. Moore \(Strider\)
Please do NOT reply to this message. Any replies will NOT be approved. -- Greg Moore Ask me about lily, an RPI based CMC.
March 20th 09 05:32 PM
by [email protected] Go to last post
1 986
tests .. by Markus Baur[_2_]
and - did it work ? markus
March 24th 09 07:09 PM
by Jeff Findley Go to last post
1 988
That Spinning Thing by Jack Frillman
When watching the Russian Progress docking to the ISS I see this little thing spinning. When I see it from the Progress on board camera view it looks like it...
January 4th 06 02:03 AM
by Jack Frillman Go to last post
0 757
The Apollo moon landing missons? by Christopher
Did the have to do a retro burn to slow down into lunar orbit? I don't seem to remember any of the missions having done so. i.e. as you climb out of a...
August 13th 03 12:01 PM
by Joann Evans Go to last post
7 1,274
The bomb fairy. by Ian Stirling
If you have a string of bombs spaced a second apart on a trajectory, is there a reason that you can't simply ride the stream with an orion, and constantly...
August 21st 03 03:41 PM
by Peter Fairbrother Go to last post
3 1,257
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