Does anyone have any pointers for getting access to people that can build things? I'm looking for someone to help me test some engineering problems - probably...

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

www.armadilloaerospace.com It looks like they are now engaged in bi-prop work, claiming that peroxide motors were not sufficiently robust for multi-use. What...

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...

Retro Aerospace is proud to announce that we have completed an initial test series on a Marshall Spaceflight Center developed energetic monopropellant...

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...

Would it be reasonable to suggest that a VL RLV would be able to stay within a 100 meter diameter path from mach 1 to touchdown? John Hare

I posted this in rec.arts.sf.tech a while ago and only got 1 reply. I was reading a thread in this group about star-power and thought that it might get more...

I am wondering how to find the pull of Mar's gravity at the Martian Moon's orbits. The pull of Phobos' own gravity varies between 8.4-1.9 mm/s²...

Seems the the conversations have turned to heating, here is something I posted a while ago in sci.space.shuttle. It really didn't generate much discussion, so...

Has anyone tested the idea, for an SSTO, of running the engines at a low level at re-entry, thus using the engine exhaust as a heat-shield? As a related...

Okay shoot me down if you have to but I think that "Ahad" guy had a neat idea and was on the right track with his "Celestial Titanic"...

Regarding a manned Mars mission: What size of order has a qualified guess on the costs? (I am aware that it can be calculated in many ways) Best...

These fly on Shuttle, in the cargo bay, in conjunction with SpaceHAB carriers. Is there a source for the dimensions of SHOSS boxes, both the exterior...

Regarding an alternate history in which a Near Earth Orbit asteroid is detected that could be visited by a modified Apollo mission. James Nicoll wrote: In...

Please read: http://www.dailycal.org/article.php?id=18043 What is going on here? I thought copper could not serve to decompose peroxide fast enough to be...

Tonight, an Atlas 5 is going to launch an Inmarsat satellite. The launch window opens at 2142 UTC and closes 15 minutes later. -why? Why is there a launch...

For decades now, companies have been using jets of water under extremely high pressure to cut through various material, including steel. The water jet can...

I remember seeing on TV a black and white clip of a scientist making this small wood frame float using some kind of ion propulsion. But that was when I was a...

How much is needed and of what type? It seems obvious to me that the earth has enough radiation shielding at sea level or even at say 12,000 feet above sea...