Has anybody investigated the use of microwave beamed power as a way of eliminating the first stage of a rocket? To put it more precisely to assist a rocket by...

I believe that we have beaten this horse to death here during prior discussions. Yet I feel dissatisfied with the extent of our discussions and the state of...

I have a feeling that now that we have had a couple of shuttle accidents we are moving away from the shuttle too eagerly. If I had to go to the Moon today, I...

I read an article in Discover magazine about a class of materials that are like metals but 3 to 6 times higher strength. They are created by mixing various...

I have recently found out that a hamster was levitated by applying a strong magnetic field of 16 Teslas using a superconducting electromagnet. This is...

I am wondering if a rocket engine's performance in the atmosphere could be improved by changing the operating point, such as mixture ratio or chamber...

(Ken S. Tucker) wrote in message ... The excellence of the shuttle system. ...

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 wonder why it is not in more common use. It is liquid at a low temp (I think around 200 C) and gives the electron off more easily than H. It should also...

I wonder if I could feed an off the shelf jet engine with fuel and oxidizer at a fuel rich mixture ratio and later add the rest of the oxidizer to the exhaust...

You could store energy more efficiently by using a flywheel weight on the rotor tips. Zoltan Szakaly