[ERPS] Hybrid Propellant Concept

Hello, I am developing a new hybrid propellant concept that I would like to discuss...It's basically very similar to any hybrid, except that the propellant consists of a cylindrical grain of lightly bonded magnesium powder onto which is sprayed through injectors the oxidizer. The oxidizer is a

Re: [ERPS] cryo freeze wheel

John Carmack wrote: > Have you considered just using a dewar of liquid nitrogen for the freeze > wheel? In the long run it would certainly be cheaper to have dedicated > refrigeration, but an easily metered source of "unlimited cold" would > probably make it easier to prove or disprove the basic i

[ERPS] cryo freeze wheel

Have you considered just using a dewar of liquid nitrogen for the freeze wheel? In the long run it would certainly be cheaper to have dedicated refrigeration, but an easily metered source of "unlimited cold" would probably make it easier to prove or disprove the basic idea. John Carmack __

[ERPS] America's Space Prize - MELVILL, RUTAN interview

MELVILL, RUTAN TALK ABOUT THE SUCCESSFUL TRIP TO SPACE Civilian astronaut Mike Melvill vertically rolled his way to space on Wednesday. Dropped from the mothership above Mojave, California, Melvill lit the rocket on Burt Rutan's "SpaceShipOne." But less than a minute later, as the aircraft was