View Full Version : NASA Marching Towards Milestone Test Firing of Space Launch System Booster

2015-Jan-26, 02:00 AM
The first solid rocket booster qualification motor for NASA’s mammoth new Space Launch System (SLS) rocket is aimed and ready to fire in a major ground test after NASA and ATK finished its installation at a test stand in Utah, and confirms that the pace of SLS development is gaining momentum. (...)Read the rest of […]

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2015-Jan-26, 03:45 AM
What is the difference between this (QM-1) and the ones mention in Wiki about the boosters (http://en.wikipedia.org/wiki/Space_Launch_System#Boosters)?
Both mention the 3.6M lb thrust...

Development motor (DM-1) was successfully tested on September 10, 2009; DM-2 was tested on August 31, 2010, and DM-3 on September 8, 2011. The DM-2 motor was cooled to a core temperature of 40 degrees Fahrenheit (4 degrees Celsius), and DM-3 was heated to above 90 °F (32 °C). These tests validated motor performance at extreme temperatures, in addition to other objectives.[26][27][28] Each five-segment SRB produces 3,600,000 lbf (16 MN) of thrust at sea level.

That makes me think that this isn't the "the largest solid rocket motor ever built " as mentioned.