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NASA tests Orion module
Friday, 07 May 2010 14:06
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Spaceflight - Lunar-missions

Orion launchYesterday NASA made a tesl-launch of their new Orion module for manned spaceflight.

NASA's Pad Abort 1 flight test, a launch of the abort system designed for the Orion crew vehicle, lifted off at 9 a.m. EDT Thursday at the U.S. Army's White Sands Missile Range (WSMR) near Las Cruces, N.M. The flight lasted about 135 seconds from launch until the crew module touchdown about a mile north of the launch pad.

The flight was the first fully-integrated test of this launch abort system design. The information gathered from the test will help refine design and analysis for future launch abort systems, resulting in safer and more reliable crew escape capability during rocket launch emergencies.

The test involved three motors. An abort motor produced a momentary half-million pounds of thrust to propel the crew module away from the pad. It burned for approximately six seconds, with the highest impulse in the first 2.5 seconds. The crew module reached a speed of approximately 700km/h in the first three seconds, with a maximum velocity of 850km/h, in its upward trajectory to about 1,8km  high.

The attitude control motor fired simultaneously with the abort motor and steered the vehicle using eight thrusters producing up to 3300kgs of thrust. It provided adjustable thrust to keep the crew module on a controlled flight path and reorient the vehicle as the abort system burned out.

The jettison motor, the only motor of the three that would be used in all nominal rocket launches, pulled the entire launch abort system away from the crew module and cleared the way for parachute deployment and landing. After explosive bolts fired and the jettison motor separated the system from the crew module, the recovery parachute system deployed. The parachutes guided the crew module to touchdown at 26km/h, about 1,6km from the launch pad.

The Orion Project has begun the process of recovering all of the test articles from the WSMR and will be evaluating all of the data over the coming weeks

Source: NASA