NASA has requested SpaceX move off from May 1 for the launch of the company’s 17th commercial resupply mission to the International Space Station.
On April 29, the space station team identified an issue with one of the station’s Main Bus Switching Units that distributes power to two of the eight power channels on the station. There are no immediate concerns for the crew or the station. Teams are working on a plan to robotically replace the failed unit and restore full power to the station system. Additional information will be provided as it becomes available. The earliest possible launch opportunity is no earlier than Friday, May 3.
NASA’s commercial cargo provider SpaceX is targeting 3:59 a.m. EDT on Wednesday, May 1, for the launch of its 17th resupply mission to the International Space Station after successful completion of its static fire engine test. Packed with more than 5,500 pounds of research, crew supplies and hardware, the SpaceX Dragon spacecraft will launch on a Falcon 9 rocket from Space Launch Complex 40 at Cape Canaveral Air Force Station.
Follow along with the coverage of the SpaceX CRS-17 mission with prelaunch events on NASA Television and at www.nasa.gov/live.
Monday, April 29 at 10:30 a.m. — What’s On Board science briefing
Tuesday, April 30 at 1 p.m. — Prelaunch news conference
Wednesday, May 1 at 3:30 a.m. — NASA TV launch coverage
The rocket awaiting launch this afternoon is the SpaceX Falcon 9, a two-stage vehicle topped by the company’s uncrewed Dragon spacecraft. The Falcon 9 first stage, a new booster for this mission, is powered by nine Merlin engines that ignite at T-0. Its second stage has a single Merlin engine that takes over after separation of the first stage. Merlin engines, also built by SpaceX, run on a combination of cryogenic liquid oxygen and a refined kerosene fuel called RP-1.
Installed atop the rocket, the Dragon spacecraft, last used for SpaceX CRS-10 in February 2017, is loaded with cargo bound for the International Space Station. The Dragon offers a pressurized section as well as an unpressurized “trunk” section for additional cargo. Also located in the trunk are the spacecraft’s power-producing solar arrays, which will open shortly after Dragon arrives in orbit.