106 reputation
3
bio website frenchtoast.fr
location Toulouse, France
age 24
visits member for 1 year, 11 months
seen Dec 19 at 12:11

I'm student in French engineering school Supaero (Aeronautics and Space).


Oct
16
comment Mirror that flips polarisation?
In this paper(CNRS-Onera), they are able to get similar effects for wider bands (3.25-4.25µm in this case), using sub-wavelength structures.
Aug
12
comment Is interstellar flight possible in near future in a way that would keep our civilization alive?
That is exhaust velocity. It has nothing to do with spacecraft velocity. My point is the hydrazine thrusters used in Voyager and New Horizon are very old technologies, and it is possible today to build spacecrafts that would travel way faster than these.
Aug
11
comment Is interstellar flight possible in near future in a way that would keep our civilization alive?
Well, engines with specific impulses several orders of magnitudes greater than what was used in both Voyager and New Horizons are being developped, so your upper bound seems a bit low.
Aug
11
comment Is interstellar flight possible in near future in a way that would keep our civilization alive?
Your answer seems to assume the trip would be made at a constant speed. Under constant acceleration, even a relatively small one, the flight could be quite shorter than what you suggest, at least for the traveller.
Jun
3
comment What's the advantage of NASA's flying saucer over traditional aerodynamic models?
It does not look so different from traditional reentry vehicles (see Soyouz/Shenzhou reentry capsule, Curiosity atmospheric entry shell, ...)
Jan
6
awarded  Student
Jan
6
asked Dual methods in structure optimization
Jan
3
comment Is it possible that there is a color our human eye can't see?
Are there known quadrachromatic species?
Jan
3
comment Why can't a spaceship accelerate for ever? Since there is no friction in space
Note that a satellite in orbit accelerate for ever towards the body it is orbiting. Well, not really for ever if you considere atmospheric drag or other types of drag, but still...
Jan
3
comment Do photons lose energy while travelling through space? Or why are planets closer to the sun warmer?
No, no, no! The amount of atmosphere has little to do with the temperature difference between seasons. See Michael Brown's answer.
Jan
3
awarded  Autobiographer
Jan
3
awarded  Supporter