SpaceX to face one last test

Elon Musk’s rocket company has one last, major hurdle to clear before it attempts an historic first flight of astronauts for NASA: proving it can safely abort a mission if something goes wrong after takeoff.

A Falcon 9 rocket with Crew Dragon spacecraft is slated to launch from Kennedy Space Center in Florida at 8 a.m. local time on Saturday. Shortly after liftoff, SpaceX will demonstrate Dragon’s ability to eject from the rocket during an emergency. The in-flight abort test will include a series of complex maneuvers before Dragon’s parachutes should deploy and the craft splashes down in the Atlantic Ocean.

“You design this with the hopes that you never have to use it, but this is showing that it works in the real world,” said former astronaut Garrett Reisman, former director of space operations at Space Exploration Technologies Corp. and a professor of astronautics at the University of Southern California.

The procedure is the final big test before NASA can certify that SpaceX is ready to ferry astronauts to and from the International Space Station. U.S. Air Force Colonel Bob Behnken and former Marine Corps test pilot Doug Hurley will be Dragon’s first passengers.

“There’s a lot riding on this,” said Reisman, who remains an adviser to SpaceX.

Americans have not flown into space aboard a U.S. craft since the shuttle program ended in 2011. Sending astronauts to the space station also is an important step for Musk’s Hawthorne, California-based company. The billionaire chief executive officer aims eventually to transport people to the Moon and Mars.

NASA will hold a pre-launch news conference Friday at 1 p.m. New York time with Kathy Leuders, the manager of NASA’s Commercial Crew Program, and Benji Reed, SpaceX’s director of crew mission management. It will be broadcast on NASA TV.

NASA awarded SpaceX and Boeing Co. a combined $6.8 billion in contracts in September 2014 to revive America’s ability to fly to the space station without buying seats on Russian Soyuz capsules. Since then, the agency and both companies have suffered delays that have put the program more than two years behind schedule.

In December, Boeing’s Starliner failed to dock with the station because of a problem with the mission’s timing software. The Chicago-based company and NASA are investigating, and the agency will decide if Boeing needs to perform a second flight without crew.

SpaceX’s Dragon capsule successfully docked with the station in March as part of its Demo-1 test.

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SpaceX to face one last test