Anyone know the Zo coordinates for the bottom of the PLB bays? I don't mean the floor of the midbody, but just the bays that give the payload bay the familiar semi-circular shape. According to the Mechanical Systems Workbook, the sill longerons are at Zo410.00.
Thanks, alk. Being a computer guy, the software and GPCs had always interested me and I always like reading your posts.
305 or 308.4 per the diagram above. it says the longerons are at 414...Quote from: DaveS on 05/14/2012 12:52 amAnyone know the Zo coordinates for the bottom of the PLB bays? I don't mean the floor of the midbody, but just the bays that give the payload bay the familiar semi-circular shape. According to the Mechanical Systems Workbook, the sill longerons are at Zo410.00.
How much time does it take to inspect Space Shuttle TPS tiles after the flight and repair it (damaged ones are replaced I guess)?
Quote from: Archer on 06/11/2012 06:59 pmHow much time does it take to inspect Space Shuttle TPS tiles after the flight and repair it (damaged ones are replaced I guess)?Most of the time between missions.
Hi all.one question about deorbit burn. Which is the reason for which during the deorbit the Orbiter was placed with the belly up? As long as you have tail-first is shouldn't be important if the belly is up or down, right? My guess is that in this was, at completion of the burn it would have been faster maneuvering to the entry attitude of 40 degrees of angle of attack and that maybe in this way the pilots had a better situation awarness.What do you think?Thanks very muchDavide
Hi wolfpack.I kept reading a little bit about this subject and I think I've now understood what you are saying. So if my understanding is correct, the reason is that for all duration of coasting from deorbit burn to EI, the Orbiter kept an inertial attitude. If this is the case, I've though another question. Maneuvering to burn attitude was done 20 minutes before the burn. If the orbiter kept this attitude inertially, does this not mean that the burn was not completely along the +x axis, but had also a +z component? or the inertial attitude was kept only AFTER the deorbit burn, while up to the deorbit burn the Orbiter had a LVLH attitude?Thanks very muchDavide
Quote from: sivodave on 06/13/2012 10:09 pmHi wolfpack.I kept reading a little bit about this subject and I think I've now understood what you are saying. So if my understanding is correct, the reason is that for all duration of coasting from deorbit burn to EI, the Orbiter kept an inertial attitude. If this is the case, I've though another question. Maneuvering to burn attitude was done 20 minutes before the burn. If the orbiter kept this attitude inertially, does this not mean that the burn was not completely along the +x axis, but had also a +z component? or the inertial attitude was kept only AFTER the deorbit burn, while up to the deorbit burn the Orbiter had a LVLH attitude?Thanks very muchDavidePerhaps the maneuver was done such that the attitude was for a completely +x burn at TIG? I'm not sure, this will have to be answered by Jorge or someone else with the expertise.My assumption (which is probably incorrect) is that things are done to minimize propellant consumption.