Dextre... Here, hang to to this for a bit...
The IDA could be "stored" in extreme emergency on the end of the RMS. The issue is that you don't want to do that for a long time. The mating end of the IDA isn't designed for indefinite storage in such a thermal environment, for one thing. And the RMS isn't designed to hold that amount of mass against a lot of the station maneuvers, for another.In re EVAs -- some EVAs are designed and practiced as you would choreograph an opera. Every move is pre-thought-out, every tool identified for use at specific times and in specific ways. However, many of a given ISS crew have what is called general EVA training; they know how to operate the EVA equipment safely, and how to maneuver around the outside of the station. They have been given training in many common tasks, including installation of MMOD barriers and replacement of a variety of commonly replaced external modules.Specific operations, like the installation and emergency troubleshooting of the IDAs, is in the former category, and you'd want the crewmembers specifically trained to these tasks to undertake them. But if an external power or cooling module or something goes bad, there are always people onboard the station who have been trained in EVA procedures and can make "contingency EVAs" to repair such issues without having been through a training process to choreograph them.What with the now-extensive ability to send up printed and visual materials to support operations, it's not quite as essential as it used to be to detail-train crews in some operations before they are launched to the station. But operating something as complex as the ISS is a series of trade-offs and compromises, and if management feels it's far better to have the ground-trained IDA crew on the station before launching the IDA, then that's what will happen...
why not just launch and leave it in the Dragon Trunk until next crew comes up? what is that, a week or two?
Quote from: cuddihy on 06/03/2016 06:15 pmQuote from: russianhalo117 on 06/03/2016 03:57 pmQuote from: MattMason on 06/02/2016 12:44 pmQuote from: FutureSpaceTourist on 06/02/2016 05:15 amQuoteJeff Foust @jeff_foustTASS reports “control system flaws” will delay next Soyuz from Jun 24 to Jul 7: http://bit.ly/1r38UxSCould delay Cygnus & Dragonhttps://twitter.com/jeff_foust/status/738145362284666880Would the delay be caused by the preferred pattern of visiting vehicles as well as the crew to berth them or are trained to berth them? They've had an interesting traffic pattern of late with up to six spacecraft attached.Delay is IDA payload and IDA EVA crew related, as the crew meant that was meant to install the destroyed IDA 1 is no longer on orbit and the new crew that is to fly on Soyuz MS(-01) received IDA-2 specific training in NBL for the entire set of planned and contingency EVA's. The current crews onboard due not have the IDA installation and contingency ground training the Next crew received. The onboard crews have a big deficit in IDA training that the next crew doesn't.Sometimes I think they really make this harder than it needs to be. Yes, the training is important...but is putting the IDA on with a computer-controlled robot arm, especially when simulation (even on orbit) is very advanced, really that hard? Especially when virtually every move is prescripted and monitored fromthe ground? And the IDA 1 crew could sit in mission control and provide verbal "astronaut eyes" assistance to ISS?NASA will never get to MARS this way.To reinforce a later answer:Ask Gene Cernan how "simple" his Gemini 9 EVA turned out to be. Because we were new to the notion of not fighting ourselves in microgravity on a spacewalk, Cernan exhausted himself and nearly caused his ELCSS resources to fail.Since then, all EVAs are trained in a large water pool to simulate not only the weightlessness but how certain tools and restraints work (or don't) to get a task done. EVA training for even the tiniest action is repeated over and over so not only the work is done, but to ensure the crew never, ever, forget to do something such as connect their safety tethers, which could make a Very Bad Day for that astronaut and the space program if they float away. No one wants the astronauts to have to use their SAFER emergency jet packs.Just because a crew is "up there" doesn't make them qualified to do all the work that comes out them out of schedule.
Quote from: russianhalo117 on 06/03/2016 03:57 pmQuote from: MattMason on 06/02/2016 12:44 pmQuote from: FutureSpaceTourist on 06/02/2016 05:15 amQuoteJeff Foust @jeff_foustTASS reports “control system flaws” will delay next Soyuz from Jun 24 to Jul 7: http://bit.ly/1r38UxSCould delay Cygnus & Dragonhttps://twitter.com/jeff_foust/status/738145362284666880Would the delay be caused by the preferred pattern of visiting vehicles as well as the crew to berth them or are trained to berth them? They've had an interesting traffic pattern of late with up to six spacecraft attached.Delay is IDA payload and IDA EVA crew related, as the crew meant that was meant to install the destroyed IDA 1 is no longer on orbit and the new crew that is to fly on Soyuz MS(-01) received IDA-2 specific training in NBL for the entire set of planned and contingency EVA's. The current crews onboard due not have the IDA installation and contingency ground training the Next crew received. The onboard crews have a big deficit in IDA training that the next crew doesn't.Sometimes I think they really make this harder than it needs to be. Yes, the training is important...but is putting the IDA on with a computer-controlled robot arm, especially when simulation (even on orbit) is very advanced, really that hard? Especially when virtually every move is prescripted and monitored fromthe ground? And the IDA 1 crew could sit in mission control and provide verbal "astronaut eyes" assistance to ISS?NASA will never get to MARS this way.
Quote from: MattMason on 06/02/2016 12:44 pmQuote from: FutureSpaceTourist on 06/02/2016 05:15 amQuoteJeff Foust @jeff_foustTASS reports “control system flaws” will delay next Soyuz from Jun 24 to Jul 7: http://bit.ly/1r38UxSCould delay Cygnus & Dragonhttps://twitter.com/jeff_foust/status/738145362284666880Would the delay be caused by the preferred pattern of visiting vehicles as well as the crew to berth them or are trained to berth them? They've had an interesting traffic pattern of late with up to six spacecraft attached.Delay is IDA payload and IDA EVA crew related, as the crew meant that was meant to install the destroyed IDA 1 is no longer on orbit and the new crew that is to fly on Soyuz MS(-01) received IDA-2 specific training in NBL for the entire set of planned and contingency EVA's. The current crews onboard due not have the IDA installation and contingency ground training the Next crew received. The onboard crews have a big deficit in IDA training that the next crew doesn't.
Quote from: FutureSpaceTourist on 06/02/2016 05:15 amQuoteJeff Foust @jeff_foustTASS reports “control system flaws” will delay next Soyuz from Jun 24 to Jul 7: http://bit.ly/1r38UxSCould delay Cygnus & Dragonhttps://twitter.com/jeff_foust/status/738145362284666880Would the delay be caused by the preferred pattern of visiting vehicles as well as the crew to berth them or are trained to berth them? They've had an interesting traffic pattern of late with up to six spacecraft attached.
QuoteJeff Foust @jeff_foustTASS reports “control system flaws” will delay next Soyuz from Jun 24 to Jul 7: http://bit.ly/1r38UxSCould delay Cygnus & Dragonhttps://twitter.com/jeff_foust/status/738145362284666880
Jeff Foust @jeff_foustTASS reports “control system flaws” will delay next Soyuz from Jun 24 to Jul 7: http://bit.ly/1r38UxSCould delay Cygnus & Dragon
Quote from: Wolfram66 on 06/07/2016 04:09 pmwhy not just launch and leave it in the Dragon Trunk until next crew comes up? what is that, a week or two?Obviously, until they launch there could be further delays, what do you do then? Unless there is a good plan B I'm sure NASA would not just launch and hope they don't get further delayed.
For how long can they keep Dragon up there? I think for quite a while.
I would think that NASA would want to use ISS to test some of this, can stuff be done without having exhaustively planned out everything in advance?
Quote from: rockets4life97 on 06/06/2016 06:24 pmRoscosmos confirms Soyuz launch to ISS is postponed to July 7 from June 24. CRS-9 is expected to be delayed as well until after the new crew (with the training to install the IDA) arrives.A: July 16 is still after July 7, do they need to be on iss for a certain period of adjustment time before they are fully ready to work?B: http://spacenews.com/russia-delays-next-soyuz-launch-to-space-station/ "...NASA spokesman Dan Huot said June 6 that the Dragon launch remains scheduled for July 16...."
Roscosmos confirms Soyuz launch to ISS is postponed to July 7 from June 24. CRS-9 is expected to be delayed as well until after the new crew (with the training to install the IDA) arrives.
Has Stage 1 arrive at the cape for CRS-9, yet?
Has there been a definitive announcement as to whether or not this will be an RTLS mission?
Although I'm not sure whether to post my POV on the update thread or discussion thread when the time comes.