FINAL BURN: Alliant Techsystems (ATK) engineers will use results from the final ground test of a space shuttle reusable solid rocket motor at the company’s Promontory, Utah, facility to continue work ...
Not to mention SRB's cannot be throttled based on the specific regimes - as the booster gets lighter due to losing weight during combustion, the delta-v increases ...
Question of the century and many reasons, but IMHO these the biggies: Decision to upgrade RS25'S and go from 5 engines to 4 to try to save some money. This cost 8-10 years and reduced performance. To ...
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