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United Launch Alliance Readies For Orbital FlightTest-2 Launch On The CST-100 Starliner Spacecraft

May 17, 2022

Spacecraft Mate: Atlas V Starliner OFT-2

Crews gently lift the Boeing Starliner spacecraft from its ground transportation to place it atop the United Launch Alliance (ULA) Atlas V rocket for OFT-2 in collaboration with NASA’s Commercial Crew Program. Photo Credit: United Launch Alliance

“The second orbital flight test will provide us with an opportunity to further analyze the unique technologies developed for our Atlas V launch vehicle in support of NASA’s human spaceflight program.”

A United Launch Alliance (ULA) Atlas V rocket is in final preparations to launch Boeing’s CST-100 Starliner spacecraft on the Orbital Flight Test-2 (OFT-2) to the International Space Station (ISS) for NASA’s Commercial Crew Program. The launch is planned for Thursday, May 19 at 6:54 p.m. EDT from Space Launch Complex-41 at Cape Canaveral Space Force Station. The live launch broadcast begins no earlier than 6 p.m. EDT on May 19 at www.ulalaunch.com.

“The second orbital flight test will provide us with an opportunity to further analyze the unique technologies developed for our Atlas V launch vehicle in support of NASA’s human spaceflight program,” said Gary Wentz, ULA vice president of Government and Commercial Programs. “We have worked very closely with Boeing and our industry partners to ensure the Atlas V rocket is ready to launch Starliner to the International Space Station. The integrated team remains focused on crew safety and this mission brings us one step closer to flying astronauts.”

The Atlas V rocket will deliver Boeing’s Starliner spacecraft to a 98-nautical mile (nmi) sub-orbital trajectory. Following separation from the Atlas V, the Starliner engines will propel the spacecraft to its final orbit and on to the ISS.

Modified specifically for the Boeing Starliner spacecraft, the Atlas V configuration does not include a payload fairing. Instead, the Starliner’s own protective surfaces take the place of the fairing to protect the uncrewed spacecraft during launch and ascent.

The Starliner is attached to the Atlas V using a launch vehicle adapter (LVA), which includes an aeroskirt to reduce aerodynamic loads on the vehicle. The Atlas V booster for this mission is powered by the RD AMROSS RD-180 engine. The Atlas V Centaur is powered by dual Aerojet Rocketdyne RL10A-4-2 engines, each producing 22,600 lb of thrust. The Centaur upper stage includes an active Emergency Detection System (EDS) that monitors the health of the rocket throughout the flight. The EDS also provides critical in-flight data that supports jettison of the ascent cover and initiates Starliner spacecraft separation. Aerojet Rocketdyne provided the two AJ-60A solid rocket boosters.

This will be the 93rd launch of the Atlas V rocket and the 104th launch from Space Launch Complex-41. To date ULA has launched 149 times with 100 percent mission success.

Filed Under: Launch, Launch Contract, Launch Facilities, Launch Management, Launch Support, Launch Vehicle, NASA

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