RocketSTEM Issue #14 - March 2017 | Page 43

Pad 39A moves from NASA to commercial providers After the Shuttle program ended, NASA turned its attention to its next vehicle, the Space Launch System. A new rocket, derived from the Shuttle legacy which would launch humans beyond Earth orbit for the first time in over 40 years. This new vehicle would, like the Saturn V, bring all its support equip- ment with it to the pad, so the pad would once again be a clean pad. Work on Pad 39B to return it to a clean pad be- gan even before the Shuttle program had ended. With a low flight rate, and a full Mobile Launcher being used to launch the new rocket, NASA determined in December of 2013 that it would only use Pad 39B, and the decision to lease Pad 39A to one of the commercial providers was made. SpaceX was awarded the use of the iconic launch pad and signed a 20 year lease in April of 2014. Since that time SpaceX has already began modifications to the pad area including the construction of a new Horizontal Integration Facility where processing of their boosters and some pay- load integration will occur. SpaceX is looking at also doing payload integration vertically now as that is a requirement of getting contracts with the U.S. Air Force for launches. The new building is located alongside the crawlerway just before the incline to the hard stand. The Flame Trench has been modified to accommodate Falcon 9 launches as well. The south side of the Flame Trench was completely filled in; all exhaust from the Falcon 9 launch- es will be directed out the north end of the trench via the Flame Deflector. That side has been resurfaced with refrac- tory concrete to withstand the intense heat of launches. The Fixed Service Structure from the Space Shuttle Program will be left in place for now. Modifications to accommodate crewed missions and access to the Dragon capsule will be made in the future. The Crew Access Arm from the Shuttle era was removed by NASA, presumably to be preserved for a museum or space facility to display. New kerosene storage tanks have already been installed on the