NASA and SpaceX are to go for another launch attempt on Saturday, May 30, for the Demo-2 mission after last night’s attempt was scrapped due to poor weather.
The launch will be the first launch of astronauts on an American rocket from US soil since the last space shuttle mission in 2011.
NASA Administrator Jim Bridenstine said afterwards the delayed attempt: “I think our teams worked together in a really impressive way, making good decisions all along,”
Launch of the mission, dubbed Launch America, is scheduled for 3:22 p.m. EDT on Saturday. Members of the public can participate in the mission through NASA’s virtual guest operations.
The launch forms part of NASA’s Commercial Crew Program. NASA astronauts Robert Behnken and Douglas Hurley will fly on SpaceX’s Crew Dragon spacecraft, lifting off on a Falcon 9 for an extended stay at the space station for the Demo-2 mission. The specific duration of the mission is to be determined.
Final flight test for SpaceX rocket
The mission will be the final flight test for SpaceX and has been designed to validate the company’s crew transportation system, including the launch pad, rocket, spacecraft, and operational capabilities. It will be the first time NASA astronauts will test the spacecraft systems in orbit.
Behnken and Hurley were among the first astronauts to begin working and training on SpaceX’s next-generation human space vehicle and were selected for their extensive test pilot and flight experience, including several missions on the space shuttle.
Behnken will be the joint operations commander for the mission, responsible for activities such as rendezvous, docking and undocking, as well as Demo-2 activities while the spacecraft is docked to the space station. He was selected as a NASA astronaut in 2000 and has completed two space shuttle flights. Behnken flew STS-123 in March 2008 and STS-130 in February 2010, and he performed three spacewalks during each mission.
Hurley will be the spacecraft commander for Demo-2, responsible for activities such as launch, landing and recovery. He was selected as an astronaut in 2000 and has completed two spaceflights. Hurley served as pilot and lead robotics operator for both STS‐127 in July 2009 and STS‐135, the final space shuttle mission, in July 2011.
Crew Dragon will dock at the ISS at around 24 hours into the mission
The Crew Dragon will lift off from Launch Pad 39A atop a specially instrumented Falcon 9 rocket. It will accelerate its two passengers to approximately 17,000 mph and put it on an intercept course with the International Space Station. Once in orbit, the crew and SpaceX mission control will verify the spacecraft is performing as intended by testing the environmental control system, the displays and control system and the manoeuvring thrusters.
Crew Dragon will be in position to dock with the space station around 24 hours into the mission. The spacecraft is designed to do this autonomously but astronauts aboard the spacecraft and the station will be monitoring approach and docking and can take control of the spacecraft if necessary.
After docking, Behnken and Hurley will be welcomed aboard station and will become members of the Expedition 63 crew. They will perform tests on Crew Dragon in addition to conducting research and other tasks with the space station crew.
Specific mission duration to be determined
Although the Crew Dragon being used for the flight test can stay in orbit about 110 days, the specific mission duration will be determined once on station based on the readiness of the next commercial crew launch. The operational Crew Dragon spacecraft will be capable of staying in orbit for at least 210 days as a NASA requirement.
Upon conclusion of the mission, Crew Dragon will autonomously undock with the two astronauts on board, depart the space station and re-enter the Earth’s atmosphere. Upon splashdown just off Florida’s Atlantic Coast, the crew will be picked up at sea by SpaceX’s Go Navigator recovery vessel and return to Cape Canaveral.
The Demo-2 mission will be the final major step before NASA’s Commercial Crew Program certifies Crew Dragon for operational, long-duration missions to the space station. This certification and regular operation of Crew Dragon will enable NASA to continue the important research and technology investigations taking place onboard the station, which benefits people on Earth and lays the groundwork for future exploration of the Moon and Mars starting with the agency’s Artemis programme, which will land the first woman and the next man on the lunar surface in 2024.