Jason Rhian
June 14th, 2017
NASA, Orbital ATK and Lockheed Martin are preparing to conduct the QM-1 static test fire of the Orion spacecrafts Launch Abort Motor at 1 p.m. MDT June 15 at Promontory, Utah. Photo Credit: Orbital ATK
PROMONTORY, Utah On Thursday, June 15, 2017,NASA, Orbital ATK and Lockheed Martinare slated to carry out the first of three qualification ground tests (QM-1) of the Launch Abort Motor being developed for use on the space agencys Orion spacecraft.
The test will last for a mere five seconds and will test out several of the motors performance aspects. Photo Credit: Orbital ATK
The vertical ground test firing is slated to take place at 1 p.m. MDT (19:00 GMT) at Orbital ATKs test facility locatednear Promontory, Utah.
In the event of an emergency either at the launch pad or during ascent, Orion is fitted with a Launch Abort System or LAS that would pull Orions Command Module away from the vehicles Service Module as well as the Space Launch System (SLS) rocket it is attached to.
The 17-foot (5.2-meter) tall Launch Abort Motor set to be tested is the main motor in the escape system and has a diameter of about three feet (1 meter). It has a manifold that has four nozzles and turns the flow of the flames to create a pulling motion.
Thursdays test is scheduled to last for only about five seconds. But,it will be an impressive five seconds with themotor reaching400,000 pounds (1,800 kilonewtons) of thrust in just one-eighth of a second, sending plumes some100 feet (100 meters) into the desert sky.
During an actual abort scenario, either on the launch pad or up to 300,000 feet (91,000 meters) in altitude during the vehicles climb toward orbit, the motor would pull the Orion spacecrafts Command Module away from whatever event would require a hasty retreat away from the launch vehicle and spacecraft.
For this test, the abort motor was fitted onto a specially-designed vertical test stand with the nozzles pointed skyward. When activated, the plumes of fire and smoke will shoot into the sky.
The motor is currently on the test stand, which has temporary thermal panels between the motors four legs tobetter regulatethermal conditioning, which was initiated Sunday, June 11. The panels will be removed a few hours before thetest. Once this has occurred, Orbital ATKs engineers will erect the heat shield acoustic array above the motor and perform final instrument checks for the test firing, according to a statement provided to SpaceFlight Insider by Orbital ATK.
This is the first static fire test that validates the ballistic performance of the abort motor operational propellant grain design, Steve Sara, Orbital ATKs Launch Abort Motor program director told SpaceFlight Insider. It also verifies the motor performance under the high temperature design limits as well as design changes since the development test performed in 2008.
If everything continues to go as NASA and its family of contractors plan, SLS will conduct its maiden flight from Kennedy Space Centers Launch Complex 39B in 2019. It will send an Orion spacecraft on a circumlunar journey designed as a shakedown flight beforesending crews aloft on the rocket in 2023.
NASA looked into the possibility of having a crew fly on the 2019 inaugural flight of SLS, as part of a directive from NASAs Acting Administrator Robert Lightfoot. The space agency, however, opted to maintain the current path it wason as there were too many logistical and technological elements that would not support a human flight under that timeline.
An Orion spacecraft has already conducted one uncrewed flight, atop a United Launch Alliance Delta IV Heavy rocket on Exploration Flight Test 1 in December of 2014.
Those wishing to watch the test can go to a public viewing sitealong State Road 83 North (about 20 miles west of Corinne, Utah).
Video courtesy of Wired
Updated at2 p.m. EDT to clarify the maximum altitude the Launch Abort Motor can be used during ascent.
Tagged: Launch Abort Motor Lead Stories Lockheed-Martin NASA Orbital ATK Orion Promontory Space Launch System
Jason Rhian spent several years honing his skills with internships at NASA, the National Space Society and other organizations. He has provided content for outlets such as: Aviation Week & Space Technology, Space.com, The Mars Society and Universe Today.
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Orbital ATK poised to test Orion Launch Abort Motor - SpaceFlight Insider
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