Quote from: oxford750 on 09/09/2009 01:11 amRe: LIVE: STS-128 Flight Day 12 - Undock, Flyaround, Late Inspection « Reply #15 on: 09/08/2009 05:32 PM » Reply with quote --------------------------------------------------------------------------------Station manuever has begun, should take about 55 minutes to put the complex in proper orientation for undockingWhy, there is nothing in the way, why no just reorient the solar panels on ISS and the 2 Soyuz and just undock?ThanksOxford750The nominal shuttle undocking procedures (which are required, if one wants a flyaround, which was the case here) require a particular undocking attitude.
Re: LIVE: STS-128 Flight Day 12 - Undock, Flyaround, Late Inspection « Reply #15 on: 09/08/2009 05:32 PM » Reply with quote --------------------------------------------------------------------------------Station manuever has begun, should take about 55 minutes to put the complex in proper orientation for undockingWhy, there is nothing in the way, why no just reorient the solar panels on ISS and the 2 Soyuz and just undock?ThanksOxford750
Quote from: Jorge on 09/09/2009 01:19 amQuote from: oxford750 on 09/09/2009 01:11 amRe: LIVE: STS-128 Flight Day 12 - Undock, Flyaround, Late Inspection « Reply #15 on: 09/08/2009 05:32 PM » Reply with quote --------------------------------------------------------------------------------Station manuever has begun, should take about 55 minutes to put the complex in proper orientation for undockingWhy, there is nothing in the way, why no just reorient the solar panels on ISS and the 2 Soyuz and just undock?ThanksOxford750The nominal shuttle undocking procedures (which are required, if one wants a flyaround, which was the case here) require a particular undocking attitude. Can you please expand on that explaination please Jorge.
I mean they boosted the orbit of the ISS the other day. Does the ISS realy need boosting of its orbit every couple of days?
Surely it does not take 55 min to move solar panels and put both ISS and Shuttle in free drift?
Quote from: Jorge on 09/09/2009 01:19 amQuote from: oxford750 on 09/09/2009 01:11 amRe: LIVE: STS-128 Flight Day 12 - Undock, Flyaround, Late Inspection « Reply #15 on: 09/08/2009 05:32 PM » Reply with quote --------------------------------------------------------------------------------Station manuever has begun, should take about 55 minutes to put the complex in proper orientation for undockingWhy, there is nothing in the way, why no just reorient the solar panels on ISS and the 2 Soyuz and just undock?ThanksOxford750The nominal shuttle undocking procedures (which are required, if one wants a flyaround, which was the case here) require a particular undocking attitude. Can you please expand on that explaination please Jorge.I mean they boosted the orbit of the ISS the other day. Does the ISS realy need boosting of its orbit every couple of days?Surely it does not take 55 min to move solar panels and put both ISS and Shuttle in free drift?ThanksOxford750
Quote from: oxford750 on 09/09/2009 11:15 amQuote from: Jorge on 09/09/2009 01:19 amQuote from: oxford750 on 09/09/2009 01:11 amRe: LIVE: STS-128 Flight Day 12 - Undock, Flyaround, Late Inspection « Reply #15 on: 09/08/2009 05:32 PM » Reply with quote --------------------------------------------------------------------------------Station manuever has begun, should take about 55 minutes to put the complex in proper orientation for undockingWhy, there is nothing in the way, why no just reorient the solar panels on ISS and the 2 Soyuz and just undock?ThanksOxford750The nominal shuttle undocking procedures (which are required, if one wants a flyaround, which was the case here) require a particular undocking attitude. Can you please expand on that explaination please Jorge.You will need to expand first on that question, since I'm not sure at all what you're asking. General questions get general answers.QuoteI mean they boosted the orbit of the ISS the other day. Does the ISS realy need boosting of its orbit every couple of days?No. It mostly relies on visiting vehicles (e.g. shuttle) for that. But I fail to see the connection between that and your question.QuoteSurely it does not take 55 min to move solar panels and put both ISS and Shuttle in free drift?It took 55 minutes for the maneuver because the maneuver was performed on ALT DAP. The maneuver must be performed very slowly to prevent loads issues on the station. And don't call me Shirley.
For undocking, the stack rotates 180 degrees putting the shuttle to the front of the station along the Vbar (velocity vector). This is to "undo" the rotate that occurred after docking (somewhat protecting the shuttle TPS from MMOD strikes that have a higher probability when "facing into the wind")
Quote from: oxford750 on 09/09/2009 11:15 amQuote from: Jorge on 09/09/2009 01:19 amQuote from: oxford750 on 09/09/2009 01:11 amRe: LIVE: STS-128 Flight Day 12 - Undock, Flyaround, Late Inspection « Reply #15 on: 09/08/2009 05:32 PM » Reply with quote --------------------------------------------------------------------------------Station manuever has begun, should take about 55 minutes to put the complex in proper orientation for undockingWhy, there is nothing in the way, why no just reorient the solar panels on ISS and the 2 Soyuz and just undock?ThanksOxford750The nominal shuttle undocking procedures (which are required, if one wants a flyaround, which was the case here) require a particular undocking attitude. Can you please expand on that explaination please Jorge.I mean they boosted the orbit of the ISS the other day. Does the ISS realy need boosting of its orbit every couple of days?Surely it does not take 55 min to move solar panels and put both ISS and Shuttle in free drift?ThanksOxford750First there is a difference between a reboost (to set up for a visiting vehicle like HTV) and a debris avoidnace maneuver.Second, there is first to flip the ISS. The arrays are parked long before you flip for structural reasons. After undock we wait until the russian segemenbt has control and has gotten us back in to the nominal flight attitude, then we unpark the arrays.
When I saw how much current the SARJ motors drew during the P6 evaluation I kept thinking it was a misprint, it was such a tiny amount. It makes sense that they'd have to be locked down for any change in Station movement. Do they park them anytime Soyuz or Progress or the ATV docks?
Has the US ever successfully put a dog into space? I know China and Russia have done it.cheers Peter
Quote from: pberrett on 09/13/2009 01:05 pmHas the US ever successfully put a dog into space? I know China and Russia have done it.cheers PeterThe US never tried. It used primates
Quote from: Jim on 09/13/2009 02:01 pmThe US never tried. It used primates Still does.
The US never tried. It used primates
I'd like to know how practical it would be to do crew transfer from some vehicle to the ISS with an EVA (the space craft being crappled bei the station arm and moved as close to the airlock as possible).Im thinking of a Gemini style space craft with a graple fixture added.