How many times has SpX 20 Dragon flown before? What were the flights? Also what is the Capsule number for this Capsule?
The next @SpaceX cargo mission to @Space_Station is prepping for launch. What's on board? Research includes high-tech materials, conserving water, 3D printing and @ESA's Bartolomeo platform for science: go.nasa.gov/3bPWa6VMore in a telecon at 1pm ET: go.nasa.gov/2SZKq9c
SpaceX proposed both Dragon 1 and Dragon 2. NASA chose Dragon 2. The choice was made when the contracts were signed.
Quote from: soltasto on 12/27/2019 01:34 pmSpaceX proposed both Dragon 1 and Dragon 2. NASA chose Dragon 2. The choice was made when the contracts were signed.Am I assuming correctly, that in order for the first flight of CRS-2 to take place with a Dragon 2, the crewed DM-2 needs to be completed first? Or will new dedicated Dragon 2's be built with no Super Dracos?
Per L2, launch date now 3/6 @ 23:50 local.
Also from NASA, SpaceX CRS-20 launch now scheduled for March 6 at 11:50 pm ET bc needed to swap out second stage.
SpaceX is now targeting March 6 at 11:50 p.m. EST for launch of its 20th commercial resupply services mission (CRS-20) to the International Space Station. During standard preflight inspections, SpaceX identified a valve motor on the second stage engine behaving not as expected and determined the safest and most expedient path to launch is to utilize the next second stage in line that was already at the Cape and ready for flight. The new second stage has already completed the same preflight inspections with all hardware behaving as expected. The updated target launch date provides the time required to complete preflight integration and final checkouts.The cargo Dragon will lift off atop a Falcon 9 rocket from Space Launch Complex 40 at Cape Canaveral Air Force Station in Florida carrying more than 5,600 pounds of science investigations and cargo to the station, including research on particle foam manufacturing, water droplet formation, the human intestine and other cutting-edge investigations.
SpaceX identified a valve motor on the second stage engine behaving not as expected and determined the safest and most expedient path to launch is to utilize the next second stage in line that was already at the Cape and ready for flight.
QuoteSpaceX identified a valve motor on the second stage engine behaving not as expected and determined the safest and most expedient path to launch is to utilize the next second stage in line that was already at the Cape and ready for flight.It's nice to have a spare just lying around (I know it was probably for the next Starlink launch, but still...).
It's nice to have a spare just lying around (I know it was probably for the next Starlink launch, but still...).
Of course we don't really know what the issue with the original stage is, and what it would have taken to resolve if they didn't have another stage available.
Quote from: mn on 02/27/2020 02:08 pmOf course we don't really know what the issue with the original stage is, and what it would have taken to resolve if they didn't have another stage available.A valve motor on the 2nd stage engine wasn't behaving as expected. https://blogs.nasa.gov/spacex/2020/02/25/spacex-crs-20-launch-targeted-for-march-6/
My point was that we have no idea what it would have taken to resolve had they not had a spare stage handy. We can't really say that having a stage handy 'saved' CRS20 from 'much longer delays' without this info.
SpaceX's Starlink launch ambitions may have saved a space station resupply mission from big delays
edit/gongora: link on NASA site https://blogs.nasa.gov/spacex/2020/02/25/spacex-crs-20-launch-targeted-for-march-6/QuoteSpaceX is now targeting March 6 at 11:50 p.m. EST for launch of its 20th commercial resupply services mission (CRS-20) to the International Space Station. During standard preflight inspections, SpaceX identified a valve motor on the second stage engine behaving not as expected and determined the safest and most expedient path to launch is to utilize the next second stage in line that was already at the Cape and ready for flight. The new second stage has already completed the same preflight inspections with all hardware behaving as expected. The updated target launch date provides the time required to complete preflight integration and final checkouts.
SpaceX is now targeting March 6 at 11:50 p.m. EST for launch of its 20th commercial resupply services mission (CRS-20) to the International Space Station. During standard preflight inspections, SpaceX identified a valve motor on the second stage engine behaving not as expected and determined the safest and most expedient path to launch is to utilize the next second stage in line that was already at the Cape and ready for flight. The new second stage has already completed the same preflight inspections with all hardware behaving as expected. The updated target launch date provides the time required to complete preflight integration and final checkouts.
