The propulsion tag has no wiki summary.
6
votes
2answers
147 views
relativistic spaceship, CMB radiation and thermodynamics
Scenario: a spaceship is travelling at a high fraction of $c$. The interstellar gas and CMB radiation has blueshifted significantly and we are facing a possible melting of the front radiation shield!
...
3
votes
3answers
3k views
Ion Drive Propulsion Top Speed
I would like to know if there is some formula / graph which would provide / show the efficiency of a certain type of propeller in space. Specifically, I'm interested in the acceleration attainable at ...
1
vote
2answers
493 views
Difference between deltaV and specific impulse
When reading any literature regarding space propulsion, I keep getting about these terms deltaV and ISP or specific impulse. I know specific impulse is supposed to be the velocity the propellant mass ...
4
votes
0answers
152 views
Mirrors and light beam divergence technology limits
There are many applications for orbital space mirrors in astronomy (better telescopes) and space propulsion (solar power for deep space probes), but this is limited by the minimum beam divergence ...
4
votes
1answer
89 views
Could this fountain, under the right conditions, technically be able to lift me up?
There is a big fountain in a lake in my city.
I was talking with a friend and we were wondering whether it would be able to lift me up. I sent a few emails and obtained information about the ...
