Quote from: kneecaps on 10/28/2009 03:04 PMAlso remember we are used to seeing separations of powered 2nd stages...Atlas and Delta have unpowered separations
Also remember we are used to seeing separations of powered 2nd stages...
The Russians ignite the second stage while the core stage is still accelerating, just before MECO. That ensures that the US propellants are settled prior to ignition.
I suspect it saw enough of the tumble motor exhaust to start a quick tumble
I've been taking notes from the briefing, since the forum seems to have been down.Doug Cooke: How cool was Ares 1-X? It was triboelectrifying! Can't say enough about this team. Went from concept to flying in 3 years. Learned a lot just getting to this point. Vehicle flew well, and we will learn a lot from the data.Jeff Hanley: Do not want to hear triboelectrified stuff from now on! Team is tired, but extremely satisfied. Couldn't be prouder of the teams. I was not even sure we were gonna launch because of the lightning strikes. But the team worked through that issue well to get to the launch. Very proud of the resultBob Ess: Spectacular day. Vehicle flew better than expected. Saw the flyaway maneuver at the pad, may have looked strange, but flew perfectly - right down the line. RoCS fired only 3 times... very benign flight. Dynamics on the upper stage, working to understand that. Booster is back in the water... so the parachutes are assumed to have worked well.Ed Mango: Fantastic day. The team really excelled. We had a great team and a great vehicle. We just had to wait for mother nature. Developmental flight stuff is a lot of fun! We had some challenges getting off the ground. It's a new rocket... it was our first time working with it. No problems with the rocket... just learning on our part. Probe cover was a bit of a challenge, but we were able to get it off. Weather didn't cooperate after that, so came back today. Lightning struck last night near pad. Worked through vehicle step-by-step to build flight rationale. That was only issue other than weather. We found a hole in the clouds, and took off through it.Questions:Q: Why no visual on chute deploy? With a test as smooth as this, what are your thoughts on "selling" this rocket.A: We saw drogues come out, then lost video. SRB ships saw parachute splashdown, on their way to pick it up. We are working from Augustine report. Have been instructed to continue on current path. This test will be valuable no matter what happens in the future. We can see how valid our models were.Q: Been 37 years since we left earth orbit. There is a push for commercial spaceflight, without background experience. This demonstration was 207th successful flight of SRB. How will you respond to Augustine report?A: Bolden and NASA are looking at the facts from the report. We are interested in helping commercial ventures through COTS, etc. They are making progress. You are seeing experience, but also a streamlined NASA team. We are learning to do this from the beginning, since we haven't done this in a while.Q: How successful would you classify this flight? Have you got any prelim data.A: Completely met, and blew away our criteria for success. All onboard data systems worked well. It will take us a while to look at all the telemetry and collect data from sensors in the booster. Separation seemed different from predicted, we will need to look at that.Q: Why are you having a difficult time selling to outsiders that you are "on-time" with this project?A: I don't know of any data about issues like TO, didn't see any. We are keeping our heads down and pushing forward with the project. We had Orion PDR successful. And a successful 5 seg booster test. I can't speak for others. Challenged from budget perspective. Opinions of others vary, and we still need to understand Augustine report's suggestions.
Q: Why are you having a difficult time selling to outsiders that you are "on-time" with this project?A: I don't know of any data about issues like TO, didn't see any. We are keeping our heads down and pushing forward with the project. We had Orion PDR successful. And a successful 5 seg booster test. I can't speak for others. Challenged from budget perspective. Opinions of others vary, and we still need to understand Augustine report's suggestions.
Q: Been 37 years since we left earth orbit. There is a push for commercial spaceflight, without background experience.
Thanks to Chris G for specifically asking about the sep dynamics.
I lost video briefly during the separation dynamics, so hopefully will get to see this better...
Sorry if this was already covered in thread, still catching up. The NASA TV feed (over satellite) had trouble right after separation, for about 20 seconds. I'll be checking my recordings to see what the deal was, but there was definitely a problem there. Internet may have been fine, but cable would definitely have seen the problem.