New Mars Forums

I quite like this TSTO architecture with in-flight LOX collection ...

http://www.andrews-space.com/content-ma … ction=MTA5

Here is a paper comparing it with competing TSTO designs ...

http://www.andrews-space.com/images/vid … 00307).pdf

... the main advantage is that the "first stage" doesn't go supersonic, so it can be a fairly ordinary jet aircraft.

(If anyone asks, I'll move this to a TSTO thread).

There are some studies out there for passively cooled suits.  The main problem is that the hands and feet can cool very quickly if you stop moving or walk into a shadow or if the wind speed picks up, etc.

Hi Zydar,

If you are sincere, then be aware that you are suffering from a delusion.  Unfortunately, it is a boring delusion.  Please progress to something more entertaining.

If you are some sort of scammer, be aware that I will gleefully assist law enforcement authorities in prosecuting any fraud you commit.  I advise you to find some other community to infest.

Sincerely,

noosfractal.

Um, Zydar, I can't tell if you are serious or not, but just in case ... as Rxke already mentioned, using an optical magnifier over a computer screen won't get you better resolution - it will just magnify the pixels.  Here is a magnification of an older LCD screen ...

I believe that modern practice is to arrange the pixels using an hexagonal tiling.  Using an optical magnifier will let you seen polygonal patterns - but they are an artifact of the pixelation.

It was more for comparison than a recommendation to use Li-ion.  Conventional Li-ion doesn't have a particularly great specific energy figure either.  ( Now those Stanford nanowire batteries on the other hand ... )

You're right in that even Li-ion batteries designed for low temperatures stop working around -40 C, but if you choose to use Li-ion as energy storage for vehicles, I don't think that your main engineering challenge is going to be keeping the batteries warm - especially if the vehicle has a pressurized cabin.  For example, the Mars Rovers use Li-ion for energy storage.

Well the spin of a planet is independent of its orbit around the Sun - so trying to change the spin won't do anything.

On the other hand, if something has the same orbit as Earth, but is moving the opposite way ... then it will hit the Earth!  That could change Earth's orbit - probably not very much though unless the thing was as big as the Moon.

Could you explain what you mean by an anti-revolution?

Maybe with something like this ...

Sunlight to Petrol
http://www.wired.com/science/discoverie … 008/01/S2P

... but the big advantage of plants is that they are self-replicating.  Hard to beat in the end.

Welcome to New Mars Mesmer!  I very much agree with what you've written.

By the way, the full quote is

"The Earth is the cradle of humanity, but humankind cannot stay in the cradle forever."

by http://en.wikipedia.org/wiki/Konstantin_Tsiolkovsky

Like others said the last time you asked ...

http://www.newmars.com/forums/viewtopic.php?t=5701

... take as much Math as you can.  I'll add Physics as well (so you can see how to apply math to real world problems).  Take AP courses if they are offered.  Take SAT prep courses.  Get a high a score as you can.  Get into the best college you can.  Don't rule out out-of-state colleges.  Apply for scholarships.  Compete in your local science fair.  Invent something.

MIT tests unique approach to fusion power
http://web.mit.edu/newsoffice/2008/ldx-tt0319.html

...Levitated Dipole Experiment...consists of a supercooled, superconducting magnet about the size and shape of a large truck tire. When the reactor is in operation, this half-ton magnet is levitated inside a huge vacuum chamber, using another powerful magnet above the chamber to hold it aloft.

The advantage of the levitating system is that it requires no internal supporting structure, which would interfere with the magnetic field lines surrounding the donut-shaped magnet, explains Jay Kesner of MIT's Plasma Science and Fusion Center, joint director of LDX with Michael Mauel of Columbia. That allows the hot, dense electrically charged gas, or plasma, inside the reactor to flow along those magnetic field lines without bumping into any obstacles that would disrupt it (and the fusion process)...

...Unlike the Tokamak design, in which the magnetic field must be narrowed to squeeze the hot plasma to greater density, in a dipole field the plasma naturally gets condensed, Kesner explains. Vibrations actually increase the density, whereas in a Tokamak any turbulence tends to spread out the hot plasma...

Actually, it is exhaust velocity/g

So what you really want to know is how to calculate exhaust velocity ...

http://www.qrg.northwestern.edu/project … pulse.html