|
|
Thread Tools | Display Modes |
#21
|
|||
|
|||
Question on the space elevator
So it would take about 16 kg of fuel+oxidizer, give or take, to send 1
kg up the elevator. But you also have to carry the fuel to lift the fuel, and the fuel to lift the fuel to lift the fuel, and so on. Mathematically, you would have to carry e^16= 9 million kg of fuel+ox. (Factors of 2 or 1/2 at that point become very important.) Anyway, beaming the power becomes economical at that point. That number of 9 million kg seems a little large... we've sent much larger things out of the gravity well on much less fuel, using less efficient processes. |
Thread Tools | |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
National Space Policy: NSDD-42 (issued on July 4th, 1982) | Stuf4 | Space Shuttle | 150 | July 28th 04 07:30 AM |
European high technology for the International Space Station | Jacques van Oene | Space Station | 0 | May 10th 04 02:40 PM |
Clueless pundits (was High-flight rate Medium vs. New Heavy lift launchers) | Rand Simberg | Space Science Misc | 18 | February 14th 04 03:28 AM |
International Space Station Science - One of NASA's rising stars | Jacques van Oene | Space Station | 0 | December 27th 03 01:32 PM |
Unofficial Space Shuttle Launch Guide | Steven S. Pietrobon | Space Shuttle | 0 | September 12th 03 01:37 AM |