Boeing’s CST-100 Starliner spacecraft is safely in orbit heading for the International Space Station following launch of the next-generation spacecraft on a United Launch Alliance (ULA) Atlas V rocket on a mission designed to test the end-to-end capabilities of the crew-capable system.
The Starliner spacecraft is scheduled to dock to the space station at 7:10 p.m. on Friday, May 20. The spacecraft is carrying more than 500 pounds of NASA cargo and crew supplies to the space station and returns to Earth with nearly 600 pounds of cargo, including reusable Nitrogen Oxygen Recharge System (NORS) tanks that provide breathable air to station crew members.
Boeing’s CST-100 Starliner has separated from the Atlas V Centaur and is flying on its own, embarking on its flight to the International Space Station. After a series of orbital adjustments, Starliner will be on course for rendezvous and docking with the space station at 7:10 p.m. on Friday, May 20.
Booster ignition and liftoff of the United Launch Alliance Atlas V rocket carrying Boeing’s CST-100 Starliner spacecraft on NASA’s Orbital Flight Test-2 to the International Space Station. Launch occurred at 6:54 p.m. EDT from Space Launch Complex-41 on Cape Canaveral Space Force Station in Florida.
About one minute after launch, the Atlas V rocket achieved Mach 1. About two-and-a-half minutes into flight, a series of key events will begin to occur over the next few minutes. The Atlas V solid rocket boosters will fall away. The Atlas first-stage booster engine will cut off, followed by separation from the dual-engine Centaur second stage. The Centaur first main engine will start, followed by aeroskirt jettison. A few minutes later the Centaur engine will cut off.
Launch conductors have completed their polls of the launch teams. The T-4 minute built-in hold has been released and the countdown has resumed. The Starliner spacecraft has been configured for terminal count. Three seconds before launch, the Atlas V booster’s RD-180 engine will ignite.
Starliner has been switched to internal power and configured for launch. The crew access arm has been stowed for launch. Weather still looking good.
The launch conductor has started a terminal count briefing with the launch team. There are three control rooms: the United Launch Alliance’s Atlas Spaceflight Operations Center on the Cape Canaveral Space Force Station; the Boeing Mission Control Center at Kennedy Space Center; and the Space Station Control Room at Johnson Space Center in Houston. NASA’s Emergency Operations Center also is activated, and United Launch Alliance has teams in Denver who will monitor ascent of the rocket.
Though no crew will be onboard the spacecraft for NASA’s Boeing Orbital Flight Test-2, the Starliner commander’s seat will be occupied by Rosie the Rocketeer, Boeing’s anthropometric test device. During OFT-1, Rosie was outfitted with 15 sensors to collect data on what astronauts will experience during flights on Starliner. For OFT-2, spacecraft data capture ports previously connected to Rosie’s 15 sensors will be used to collect data from sensors placed along the seat pallet, which is the infrastructure that holds all the crew seats in place.
The combined White Room Crew of Boeing and United Launch Alliance have closed and secured the white room, performed cabin leak checks of the CST-100 Starliner and cleared the white room. The team has cleared the crew access tower and driven to a safe distance from the launch pad.
Meteorologists with the U.S. Air Force 45th Weather Squadron now predict a 90% chance of favorable weather for launch this afternoon.