Examining Crew Dragon’s launch abort modes and splashdown...
- by NASASpaceFlight.com
- May 21, 2020
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(Click here to read about the rescue forces).
Abort stage 1b, still during first stage flight, stretches until first stage cutoff and would result in a landing off the coast of Virginia.
Crew Dragon aborts away from a Falcon 9 rocket during the In-Flight Abort test in January 2020. (Credit: SpaceX)
For both stage 1a and stage 1b aborts, Crew Dragon would use its SuperDraco engines to abort away from Falcon 9 before its regular Draco thrusters reorient and stabilize the capsule before parachute deployment.
Beginning with first stage shut down, the longest of the abort modes begins with stage 2a.
This stretches from T+2 minutes 32 seconds to T+8 minutes 05 seconds and would result in a landing in the Atlantic Ocean anywhere from off the coast of Delaware stretching northward to off the Canadian Maritime Provinces.
During a stage 2a abort, Dragon would separate away from the second stage of the Falcon 9 followed by a series of prograde burns of the SuperDraco abort engines and Draco thrusters to allow Crew Dragon to reach a very specific splashdown location in the North Atlantic.
Abort stage 2b then follows, a short window which would result in a retrograde burn of the SuperDraco engines after popping off the second stage to reach a specific abort location past the province of Nova Scotia.
The following abort mode is stage 2c, which jumps all the way across the Atlantic to just off the western coast of Ireland. It would require a prograde burn of the SuperDraco engines to allow Crew Dragon to reach its abort splashdown target.
Abort stage 2d would also see Crew Dragon land in the Atlantic off the western coast of Ireland, but would require a retrograde burn of the SuperDraco engines to bring the crew down in this zone.
Crew Dragon and Falcon 9 in the hangar at Launch Complex 39A pic.twitter.com/l758CdYXNQ
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