-
#860
by
GLS
on 18 Aug, 2007 15:01
-
I think on STS 49 they needed 3 astronauts outside to help grab the INTELSAT because the capture bar/device/whatever didn't work. They got all 3 EVs into the A/L (very thight), and one SCU would be shared by 2 EVs...
There's a NASA pdf file with lot's of info on EVAs (this one too...)
spaceflight.nasa.gov/spacenews/factsheets/pdfs/EVACron.pdf
-
#861
by
DaveS
on 18 Aug, 2007 19:59
-
I'm trying to decypher the attitude lines in the flight plans. I think that I have gotten things right, but could someone with more knowledge double-check my data?
-ZLV +YVV: P000, Y090, R180, port wing into VV, hds dn
-ZLV -XVV: P180, Y000, R000, tail into VV, hds dn
+ZLV +XVV: P000, Y000, R000, nose into VV, hds up
-
#862
by
Jorge
on 18 Aug, 2007 20:06
-
DaveS - 18/8/2007 2:59 PM
I'm trying to decypher the attitude lines in the flight plans. I think that I have gotten things right, but could someone with more knowledge double-check my data?
-ZLV +YVV: P000, Y090, R180, port wing into VV, hds dn
-ZLV -XVV: P180, Y000, R000, tail into VV, hds dn
+ZLV +XVV: P000, Y000, R000, nose into VV, hds up
+YVV is starboard wing into VV.
When an attitude is at the yaw singularity (Y090 or Y270), there are an infinite number of combinations of pitch/roll that accurately describe that attitude. In those cases, NASA generally sets the roll to zero and puts the entire rotation into pitch. So NASA would describe the first attitude as P180 Y090 R000, although your numbers are still accurate.
-
#863
by
DaveS
on 18 Aug, 2007 20:14
-
Jorge - 18/8/2007 10:06 PM
When an attitude is at the yaw singularity (Y090 or Y270), there are an infinite number of combinations of pitch/roll that accurately describe that attitude. In those cases, NASA generally sets the roll to zero and puts the entire rotation into pitch. So NASA would describe the first attitude as P180 Y090 R000, although your numbers are still accurate.
OK, thanks! To use a Apollo 13 movie quote: "but if this paperwork isn't right, who knows where we'll... we'll end up out here."
-
#864
by
brahmanknight
on 19 Aug, 2007 10:44
-
GLS, is there a pdf that covers the spacewalks after Shuttle-Mir?
-
#865
by
mark147
on 19 Aug, 2007 19:17
-
I've a couple of questions regarding the delta-v figures in the daily execute packages. In particular, on FD07 of STS-118, the execute package contained the following:
PRE-ESP3 HANDOFF
OMS 436 FPS
ARCS (TOTAL ABOVE QTY1) 38 FPS
TOTAL IN THE AFT 474 FPS
ARCS (TOTAL ABOVE QTY2) 68 FPS
FRCS (ABOVE QTY 1) 32 FPS
AFT QTY 1 83 %
AFT QTY 2 45 %
POST-ESP3 HANDOFF
OMS 378 FPS
ARCS (TOTAL ABOVE QTY1) 39 FPS
TOTAL IN THE AFT 417 FPS
ARCS (TOTAL ABOVE QTY2) 69 FPS
FRCS (ABOVE QTY 1) 32 FPS
AFT QTY 1 83 %
AFT QTY 2 45 %
Why is the available delta-v reduced after the shuttle hands off ESP3? I would have expected the reverse since the shuttle will then be lighter. What am I missing?
Also, what do QTY1 and QTY2 refer to?
-
#866
by
GLS
on 19 Aug, 2007 21:00
-
-
#867
by
pkspx
on 21 Aug, 2007 20:21
-
Shuttle landing today, STS 118 ground tracks showed shuttle came from South Florida, and headed North to KSC for landing. Normally I have seen ground tracks flying from West to East, what was the difference today?
-
#868
by
Jorge
on 21 Aug, 2007 20:34
-
mark147 - 19/8/2007 2:17 PM
Why is the available delta-v reduced after the shuttle hands off ESP3? I would have expected the reverse since the shuttle will then be lighter. What am I missing?
ESP3 was in the aft end of the payload bay. Removing it shifts the orbiter c.g. forward, so I would guess they need to protect more aft prop as ballast to keep the c.g. within limits.
-
#869
by
BenB5150
on 22 Aug, 2007 14:45
-
I was reading "Return-To-Flight Space Shuttle Discovery" and noticed that Discovery was using one of the OMS pods delivered with Challenger. I know that they swap around parts between the orbiters but does anyone know which OMS pods and FRCS are on which orbiter now?
-
#870
by
mkirk
on 22 Aug, 2007 15:12
-
BenB5150 - 22/8/2007 9:45 AM
I was reading "Return-To-Flight Space Shuttle Discovery" and noticed that Discovery was using one of the OMS pods delivered with Challenger. I know that they swap around parts between the orbiters but does anyone know which OMS pods and FRCS are on which orbiter now?
Yeah you can find that in a lot of places. Many of the processing reports that get posted on here in the L2 section will have that info.
Also Bill Harwood always has a summary of the flight hardware for each mission. Click on the link below:
http://www.spaceflightnow.com/shuttle/sts118/fdf/118quicklook1.htmlMark Kirkman
-
#871
by
SpaceFan
on 22 Aug, 2007 15:24
-
Long time lurker here with some questions I'll be posting over the next few weeks. I'll start with this one since I've been wondering about it since STS-118. What is the criteria for choosing a shuttle commander? For example, I noticed that Scott Kelly and Charlie Hobaugh each had one flight prior to STS-118, same military rank, etc. How do they choose one over the other?
Also, it seems like the number of flights to become a commander have dropped. I haven't gone through the numbers, but it seems like 10 years ago, you had to have 2 flights as a pilot before becoming a commander whereas recently, after one you were qualified.
Sorry if these are dumb questions, but was just wondering.
Thanks!
-
#872
by
Danny Dot
on 22 Aug, 2007 15:34
-
Where can I find post landing pictures of the tile damage area?
Danny Deger
-
#873
by
DaveS
on 22 Aug, 2007 15:36
-
-
#874
by
Jim
on 22 Aug, 2007 16:24
-
SpaceFan - 22/8/2007 11:24 AM
Long time lurker here with some questions I'll be posting over the next few weeks. I'll start with this one since I've been wondering about it since STS-118. What is the criteria for choosing a shuttle commander? For example, I noticed that Scott Kelly and Charlie Hobaugh each had one flight prior to STS-118, same military rank, etc. How do they choose one over the other?
Also, it seems like the number of flights to become a commander have dropped. I haven't gone through the numbers, but it seems like 10 years ago, you had to have 2 flights as a pilot before becoming a commander whereas recently, after one you were qualified.
Sorry if these are dumb questions, but was just wondering.
Thanks!
There are no set standards nor logic in assigning crews or commanders
-
#875
by
AstroRJY
on 22 Aug, 2007 16:49
-
SpaceFan - 22/8/2007 11:24 AM
Long time lurker here with some questions I'll be posting over the next few weeks. I'll start with this one since I've been wondering about it since STS-118. What is the criteria for choosing a shuttle commander? For example, I noticed that Scott Kelly and Charlie Hobaugh each had one flight prior to STS-118, same military rank, etc. How do they choose one over the other?
Also, it seems like the number of flights to become a commander have dropped. I haven't gone through the numbers, but it seems like 10 years ago, you had to have 2 flights as a pilot before becoming a commander whereas recently, after one you were qualified.
Sorry if these are dumb questions, but was just wondering.
Thanks!
Not really. Many if not most CDRs flew as a PLT only once- Crippen, Truly, Shaw, Scobee, Walker, Bobko, Brandenstein, Gibson, Coats... that's just a few from the 1980s era and it's the same today. It is actually more rare to have a PLT fly as a PLT twice, and usally the reason for that is becasue he (or she) 's already been assigned to a second flight before he's flown his first. You can't become a CDR though until you've actually flown a mission as a PLT. Also, I really don't think which branch of service or military rank has much to do with it, more your technical knowledge and flight skills. Hope that is more helpful.
-
#876
by
brahmanknight
on 22 Aug, 2007 17:17
-
Does anyone have photo of the lead ballast and ballast boxes in the aft compartment?
-
#877
by
SpaceNutz SA
on 22 Aug, 2007 20:14
-
Basic Orbital Mechanics Question:
Slower = higher and faster = lower. How is it then that for a spacecraft to re-enter it must slow down (which means higher) and not speed up (which means lower)??
-
#878
by
rdale
on 22 Aug, 2007 20:16
-
Going slower doesn't mean going higher.
-
#879
by
BWP
on 22 Aug, 2007 20:26
-
will any of the shuttle's be displayed at Edward's? once there retired. I mean it should because half of the shuttle flight's were at Edward's
