More Ares I Modifications

[spacelifejunkie]

"The ongoing process of refinements to all elements of the Ares I/Orion vehicle have picked up pace again, following the end of the scheduled stand-down of NASA Constellation design cycle work."<br /><br /><br />I based the title of the thread on the first sentence of the article. I agree with you, though that the focus is on Orion. Maybe the title should have read...<br /><br />"More Ares I/Orion Modifications"<br /><br /><br />All of these mod's may be necessary. I'm not sure I'm qualified to judge these decisions. I just worry that it takes us closer to simply resupplying the ISS, never develping the Ares V and a 21st century moon shot remaining only a vision and not a reality. NASA and Congress and the next President need to keep us on course. <br /><br /><br />SLJ<br /><br /><br />

 

[propforce]

<blockquote><font class="small">In reply to:</font><hr /><p>"It's good to see that the new J-2X requirements include a "re-start" capability. " <br /><br />The original J2 had restart capability. <p><hr /></p></p></blockquote><br /><br />But the previous J-2X requirements did not include a "re-start" requirement. We've been amazed for over a year wondering WHEN is MSFC going to wake up and add that requirement. <div class="Discussion_UserSignature"> </div>

 

[propforce]

No problem S_G.<br /><br />BTW, were you around during the Saturn days? One of the J-2 engine (the center one) sufferred a bit of POGO near the end of 2nd stage flight (chucking instability?).<br /><br />The original J-2 has a dedicate LH2 bottle for engine re-start. I guess they were worried that they wouldn't get enough 'head' pressure to spin the engine up, eh? <img src="/images/icons/smile.gif" /><br /> <div class="Discussion_UserSignature"> </div>

 

[gunsandrockets]

<Things change.><br /><br />Ah, but that's the point. When was the change made?<br /><br />I claimed the engine changed back when Lockheed won the Orion contract, because of a news article about the contract that mentioned the different engine Lockeed favored.<br /><br />Your claim was that the news story was false, that there was no engine change and we should trust your 'insider' information instead of publiclly available information.<br /><br />So now that you finally admit the CEV engine was indeed changed, what is your current claim about when that change was made? This should be interesting...