Comments on: Senate Commerce Committee assignments http://www.spacepolitics.com/2007/01/25/senate-commerce-committee-assignments/?utm_source=rss&utm_medium=rss&utm_campaign=senate-commerce-committee-assignments Because sometimes the most important orbit is the Beltway... Wed, 17 Sep 2014 13:35:41 +0000 hourly 1 https://wordpress.org/?v=4.0.38 By: concerned citizen http://www.spacepolitics.com/2007/01/25/senate-commerce-committee-assignments/#comment-9804 Fri, 26 Jan 2007 17:06:01 +0000 http://www.districtofbaseball.com/spacepolitics/?p=1208#comment-9804 I sure hope the staff on these new committees pay attention to what’s happening with Ares I performance and Orion’s mass. See presentation at:

http://images.spaceref.com/news/2007/2007.01.25.esmd.pdf

Ares I is still underpowered to the tune of 10,000 lbs. If Orion can’t shrink by that amount, Ares I will have no mass margin to accommodate the weight growth that naturally occurs during development. And 10,000 lbs. is almost 20 percent of Orion’s total mass — that’s a huge (read unlikely) mass reduction.

On top of that, insiders indicate that Orion is getting slightly heavier, not a lot lighter. They also indicate that Ares I is using a few-second burn from its launch abort system just to deliver its current, inadequate performance to orbit. Of course, the launch abort system is only intended to be used in an emergency — not a good sign.

And all this before the system requirements review for the Stick’s J2-X upper stage, which could (is likely to?) also get heavier.

Again, I sincerely hope that the staffers on these new committees get their heads up and start exercising some strong oversight on Ares I and Orion. Setting budget and other rumored technical issues aside and just based on mass alone, the Ares I train appears to be headed for a huge derailment.

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