Tomorrow, SpaceX is planning to conduct what promises to be a spectacular test flight of the crew escape system for their Crew Dragon spacecraft. If successful, this should clear the launcher for the first crewed flight to the International Space Station later this year. The launch is scheduled for a four-hour launch window which opens at 13:00 UTC on 2020-01-18. At this writing, there is a 90% probability of acceptable weather for the test.
If all goes as planned, the flight will be brief. At the moment of maximum dynamic pressure (when the combination of velocity and air density produces maximum stress on the vehicle [“max q”]), the capsule’s Super Draco thrusters should fire to carry it away from the booster, whose engines will be cut by the abort system. This is expected to occur around 84 seconds after launch.... [Read More]