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SpaceX Uncrewed Flight Today Will Test Abort System for Crew Dragon

6 May 2015, 12:45 UTC
SpaceX Uncrewed Flight Today Will Test Abort System for Crew Dragon
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A test version of the SpaceX Crew Dragon stands ready for today’s flight test that will simulate an emergency abort from the launch pad. The SpaceX team is reporting that the vehicle, ground systems and weather are cooperating for a T-0 at 9 a.m. EDT. A go/no-go poll to enter the terminal count will be conducted at T-13 minutes.
The SuperDraco engines integrated into the side of the spacecraft will ignite at the pad and burn for about six seconds to lift the Dragon and its trunk about a mile above Cape Canaveral Air Force Station and the Atlantic Ocean. Soon after the propellant is exhausted, the spacecraft will deploy drogue chutes then three full-size parachutes. It will then splash down in the Atlantic where it will be recovered by two fast boats and a barge.
The Crew Dragon’s four “jet packs” house a total of eight SuperDrago engines around the vehicle. Each one provides about 15,000 pounds of thrust by burning hypergolic propellants monomethylhydrazine and nitrogen tetroxide. The two chemicals are called hypergolic because they ignite instantly when they come in contact with each other. Together, the eight thrusters will produce more than 120,000 pounds of thrust at ignition.

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