Space Forum / Space Flight / February 2005

http://www.spacedaily.com/news/rocketscience-05e.html
The attached article notes that Dr. Robert Levis et al
at Temple University's Center for Advanced Photonics
Research is attempting to manufacture cyclic ozone.

Here is a device called a field effect modulator that can not do very
much by itself but with a lot of these devices, a vacuum, and enough
power, it seems to be able to effect electro-magnetic propulsion and
navagation for a craft. Here is a link to a telling a little bit more

I'm trying to find information on the Soyuz capsule's center of mass
during re-entry.
Presumably, the center of mass is near the base of the capsule, but
offset slightly from the axis of symmetry to give the Soyuz an angle of

Rapid manufacturing (also known as direct manufacturing)
is an additive fabrication technology that makes complex
parts automatically from a CAD STL file. There are several
terms similar to rapid manufacturing: 3-Dimensional Printing,

Did large meteor impacts cause volcanoes on the other side Mars?
Here's approximate locations for those regions indicating
    a rough correlation as global opposites.
Largest Martian volcanic area

In order to produce the most effective orbiting facility with the least
amount of materials and the least effort, it seems obvious that it
should
be an inflatable sphere. As soon as the internal volume becomes even

Probably such things have been hashed out before, but allow me to
solicit the opinion of the readership on this question that has
come up in some off-line discussions:
Supposing you wanted a reactive propulsion system -- say a

The highest resolution Enceladus images from the orbit 3 flyby was
60m/pixel from a distance of ~10,000 km.  The closest distance to
Enceladus on the flyby was ~1200 km.  What was the reason for no images
from closer than ~10,000 km.  Night side flyby?

I noticed some discussion of this combination some time back.
Is there any reason that rather than having separate N20 and propane tanks
you can't have the gases mixed in a single tank?  Would the propane, being
a hydrocarbon, make the N20 shock sensitive?  Or does the big ...

I'm wondering if this idea has occurred anywhere else:
If humans need a full one Earth gravity after all, a lunar
settlement could provide that, at least part of the time.  Build a
circular track on the surface, with a radius of 1 km. and tilted.

My 9-year-old kid made a  micrometeoroid dust collector/detector in the back
yard for a science fair project: it's a tarp and a big strong magnet: after
collecting a day's worth of dust on the tarp, it's run past the magnet to
capture any iron. In just five hours the first day, he ...

Does anyone know of a method, or a piece of software, for calculating (or at
least approximating) low-thrust interplanetary trajectories?  Most of what
I've found so far is PhD theses about using calculus of variations for fun
and profit.  While I can handle a little math (my ...

This mature fabrication technique is perfectly suited
for making complex metal parts, including CHEAP
ROCKET ENGINES! All you have to do is to make the
CAD model and then send the model to this fast

  Just out of curiosity...
    What is the carbon-carbon heat shielding on the leading edges and
nose of the Shuttle composed of?  I'm assuming that part of it is a
grahpite-fiber cloth material, but is it embedded in a ceramic

I've already used google to find an answer,but the links weren't very
helpful,that's why I'm asking here:
Are there any good books or papers about the design and use of eletronics
devices in space?Especially about the main problems that normally arise,and