Presumably sci.space.tech is not exclusively about propulsion. Has there been much study about what kind of weaponry a manned spacecraft might carry with...

Andrew Nowicki wrote: AN The turbines are placed in the tips of the helicopter AN blades, so the propellant is compressed by the AN centrifugal force like...

"Tim Tyler" wrote: Still, maybe ringworld - along with "solid" Dyson spheres - is still too far out for serious discussion ;-) Well,...

In looking at a ramjet/scramjet diagram, it seems that the burnt gas would want to go in both direction: towards both the inlet and the outlet. Since there is...

Does anyone know what the radiation lever is at the Van Allen Belts.. And how dangerous it is to humans?? I've read a few things: - the radiation is equal to...

Hello, I'm a member of a group building a CubeSat based Pico Satellite. I am attempting to find a standard GPS reciever, perhaps one with multiple antennas to...

For long range space travel with hydrogen reaction mass... Roughly how much power is required to keep hydrogen liquified per watt of heat leakage into the...

I understand that the basic structure of the Shuttle is aluminum, rather like a Boeing 747. A titanium structure would weigh less. Further a titanium...

How long do plutonium batteries last? What voltages do they come in? --- Outgoing mail is certified Virus Free. Checked by AVG anti-virus system...

The Space Shuttle heat shield has changed over time. Basically they have replaced tiles with things requiring less maintence on the less critical (cooler)...

The header of the message pretty much says what my question is: Why is Xenon the propellant of choice for an ion thruster? What makes it a better choice than...

I'm trying to model orbits with Lunar perturbations in Microsoft Excel My first step is just trying to get an ordinary ellipse without lunar peturbations. I...

"Andrew Nowicki" wrote in message ... {general discussion snipped} ...

Assume for the sake of argument that we discover an earth mass planet in the A or B Centauri system. Further assume spectroscopic analysis detects copious...

Anyone know the delta-V to move Hubble to 51.6 degrees (while keeping it near 600 km altitude). What would be the amount of required propellant, assuming a...

I looked on the web curious about thrust augmentation concepts for jet engines and found a 1952? NACA report that detailed an experiment where water was...

I have been contemplating various reentry options for my imaginary air breathing SSTO vehicle. If I can solve the problem of going to orbit by using an air...

I have grown up thinking some day there will be large orbital space stations of the type suggested by von Braun serving as staging points for journeys to the...

Zoltan Szakaly wrote: I spent the last few days reading past messages in this group on the subject of SSTO vehicles. It seems to me...

Australian engineers have just announced what they claim is a much more efficient ion...