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Results tagged with solar-sail
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user 49
Questions regarding a 'sail' that can be attached to spacecraft to harness the sun's radiation to propel a ship in one direction or another.
16
votes
Accepted
How do you slow down a solar sail?
If you're asking about interstellar travel, then the answer is pretty simple; For diffuse, unfocused sources of light like the one emitted by stars, photon flux density decreases with the inverse squa …
- 76.4k
12
votes
Accepted
Could the Hubble mirror be used to create a laser to propel solar sails?
The answer is a clear no because Hubble Space Telescope (HST) uses a fixed focal length of 57.6 m. The only thing you'd achieve by re-purposing it as a solar concentrator would be to melt its focal pl …
- 76.4k
4
votes
Laser propulsion possible?
I'm going to borrow an analogy from Baron Münchhausen (see Fig. 1) later on to illustrate the Newton's three laws of motion that are in effect with such a system you're proposing and why it wouldn't b …
- 76.4k