T-20 minute vent.
F9/Starlink 6-25: This will be the 78th F9-family launch of '23 and the 268th single-stick F9 flight overall; booster B1077 is making its 8th flight; a successful droneship recovery would be SpaceX's 190th and its 240th overall
F9/Starlink 6-25: The 23 Starlinks going up this evening will boost the total orbited to date to 5,376; going into tonight's launch, space statistician Jonathan McDowell (@planet4589) says 4,959 Starlinks are presumed functional (not counting this latest batch)
Watch Falcon 9 launch 23 @Starlink satellites to orbit
Pusher pressure issues, hope that doesn't require a rollback to check. That's the pneumatic pusher to push the second stage forward from the first stage, The area in Red in the attached picture is the piston but the pump is out of frame.
There is a stage separation mechanism at the top of the Falcon 9 1st stage that uses a piston to push away from the 2nd stage. The pneumatic piston is supported by a tripod structure. The top of the helium powered piston fits into the bell of the Merlin engine of the second stage.
https://www.spacex.com/launches/mission/?missionId=sl-6-25QuoteEight backup opportunities are also currently available on Monday, October 30 starting at 7:20 p.m. ET until 10:22 p.m. ET.
Eight backup opportunities are also currently available on Monday, October 30 starting at 7:20 p.m. ET until 10:22 p.m. ET.