Boeing’s Starliner Completes Pad Abort Test for Commercial Crew
Boeing’s CST-100 Starliner’s four launch abort engines and several orbital maneuvering and attitude control thrusters ignite in the company’s Pad Abort Test, pushing the spacecraft away from the test stand with a combined 160,000 pounds of thrust, from Launch Complex 32 on White Sands Missile Range in New Mexico. The test, conducted Nov. 4, 2019, was designed to verify that each of Starliner’s systems will function not only separately, but in concert, to protect astronauts by carrying them safely away from the launch pad in the unlikely event of an emergency prior to liftoff. The Pad Abort Test is Boeing’s first test flight for NASA’s Commercial Crew Program, which is working to launch astronauts on American rockets and spacecraft from American soil for the first time since 2011.
Boeing’s CST-100 Starliner spacecraft completed a critical safety milestone on Monday in an end-to-end test of its abort system. The Pad Abort Test took place at Launch Complex 32 at the U.S. Army’s White Sands Missile Range in New Mexico.
The test was designed to verify each of Starliner’s systems will function not only separately, but in concert, to protect astronauts by carrying them safely away from the launch pad in the unlikely event of an emergency prior to liftoff. This was Boeing’s first flight test with Starliner as part of NASA’s Commercial Crew Program to return human spaceflight launches to the International Space Station from American soil.
“Tests like this one are crucial to help us make sure the systems are as safe as possible,” said Kathy Lueders, NASA’s Commercial Crew Program manager. “We are thrilled with the preliminary results, and now we have the job of really digging into the data and analyzing whether everything worked as we expected.”
During the test, Starliner’s four launch abort engines, and several orbital maneuvering and attitude control thrusters simultaneously ignited to rapidly push the spacecraft away from the test stand. Five seconds into flight, the abort engines shut off as planned, transferring steering to the control thrusters for the next five seconds.
A pitcharound maneuver rotated the spacecraft into position for landing as it neared its peak altitude of approximately 4,500 feet. Two of three Starliner’s main parachutes deployed just under half a minute into the test, and the service module separated from the crew module a few seconds later. Although designed with three parachutes, two opening successfully is acceptable for the test parameters and crew safety. After one minute, the heat shield was released and airbags inflated, and the Starliner eased to the ground beneath its parachutes.
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