1. One thing that I didn't know about (caveat: I'm a launch newbie) before I read that document was the concept of PCS, second stage Probability of Command Shutdown >= 99.7% (page 12).For the benefit of anybody else who might wonder what that means, to save them from having to dig, the Delta people's explanation is that "0% PCS means spacecraft orbit insertion at second-stage cutoff always occurs due to a propellant depletion shutdown (PDS) and is never commanded by guidance."So, apparently, given the various things that fluctuate from nominal on launch day (like weather), and assuming successful launch vehicle operation, you have a 99.7% chance of not running out of "gas" before you've reached your target destination.2. I'd be curious if anyone knows more about, on chart 5, which signals are sent to the re-radiating antennae outside the fairing, and which are just leaking through the 14" diameter RF window? I'm assuming the re-rad antennae are for S-band telemetry of the vehicle?
Quote from: Chris Bergin on 05/03/2010 02:13 pmMission booklet:Thanks for that link, Chris! I found it informative.
Quote from: bbliss on 05/19/2010 07:19 pmQuote from: Chris Bergin on 05/03/2010 02:13 pmMission booklet:Thanks for that link, Chris! I found it informative. I notice that this mission booklet doesn't give the parking orbit heights - usually the Delta mission books have a few more details than this.
So... I see that NASA PAO is doing some sort of Delta IV coverage here:http://science.ksc.nasa.gov/shuttle/countdown/video/chan12large.jpgBut I can't find any video feed, and the NASA TV schedule website doesn't mention this launch. Am I missing something?