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NASA completes safety system testing for Orion spacecraft

via:博客园     time:2019/3/29 14:03:39     readed:182


Graph: Ignition test of attitude control engine for launch-stop system

Tencent Technologies News, March 27, according to foreign media reports, the National Aeronautics and Space Administration (NASA) announced that it completed two key tests of Orion spacecraft safety system last week. The engineering team successfully tested an engine on the Orion spacecraft launch suspension system, which is responsible for bringing astronauts to safety during launch and completing Orion vertical landing tests at sea.

The launch suspension system of Orion spacecraft is installed on the crew cabin roof to protect astronauts during space travel. If necessary, it can start in milliseconds and push the cabin to a safe place. The system consists of three solid rocket motors: the suspension motor is designed to take the crew cabin away from the rocket, the attitude control motor can control the direction of Orion spacecraft, and the separation engine can separate the launch suspension system from the crew cabin, so that the crew cabin can open the parachute and land safely.

Ensure crew safety throughout the mission, including systems for assisting astronauts to return to the ground. On the Atlantic coast of North Carolina, engineers tested the crew module's vertical landing system to ensure that the crew module maintained a positive vertical attitude after returning to Earth after a deep space mission.

When Orion splashes into the ocean, there may be two different attitudes. Ideally, the cabin thermal shield is submerged in water, while the windows and hatches are above the surface. Of course, the crew cabin may also have a top submerged in water and a heat shield facing the sky. Five bright orange airbags were deployed in the crew module vertical system to flip the crew module to the right when the Orion spacecraft poured into the water. The system can straighten the cabin in less than four minutes.


Picture: NASA Tests Orion Cabin Vertical Landing System in the Atlantic Ocean

Several tests using the Orion crew module model show that even if one of the airbags fails to inflate properly, the vertical landing system can still operate as expected.

The system was previously tested at NASA's Neutral Buoyancy Laboratory at Johnson Space Center in Houston and off the coast of Galveston, Texas. The Neutral Buoyancy Laboratory is a huge pool for astronaut training. Engineers also want to test vertical landing systems in more challenging waves and work with the Coast Guard to test them in the Atlantic Ocean.

After several days of testing, engineers conducted experiments in four different configurations. These tests validate the system's ability to work under different wave conditions, and demonstrate how the vertical landing system protects the crew in a variety of landing scenarios.

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