I have seen your recent tests. You made some progress and I appreciate it, however, I do not really understand how will you be able to scale up this test to the first stage of the rocket HAAS. A pressure fed engine of the scale you have just tested ,in the middle of March 2009, is perfectly suitable for orbital maneuvers but I have serious concerns it really works efficiently for pushing upward a 22 tons space vehicle, even if you launch the rocket from 18 km above the Earth.
Nobody has ever put a satellite on orbit using only pressure fed engines and even if some people used such engines for the last stage of their rocket, they did not start it at 18 km, but much higher.
I've already told everyone that ARCA is my pick for the #1 team (although we've seen some new and rapidly rising contenders). Now you can see why. But the only thing I'm confused about is over which one is Stabilo. Isn't Stabilo the one for manned orbital exploration (like Spaceship One) and isn't HAAS the one ARCA is planning to use for the Google X Prize?
About HAAS Rocket
I have seen your recent tests. You made some progress and I appreciate it, however, I do not really understand how will you be able to scale up this test to the first stage of the rocket HAAS. A pressure fed engine of the scale you have just tested ,in the middle of March 2009, is perfectly suitable for orbital maneuvers but I have serious concerns it really works efficiently for pushing upward a 22 tons space vehicle, even if you launch the rocket from 18 km above the Earth.
Nobody has ever put a satellite on orbit using only pressure fed engines and even if some people used such engines for the last stage of their rocket, they did not start it at 18 km, but much higher.
Cool tests!
I've already told everyone that ARCA is my pick for the #1 team (although we've seen some new and rapidly rising contenders). Now you can see why. But the only thing I'm confused about is over which one is Stabilo. Isn't Stabilo the one for manned orbital exploration (like Spaceship One) and isn't HAAS the one ARCA is planning to use for the Google X Prize?
Congratulations! Looks like
Congratulations! Looks like things are coming along much faster than I thought.