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#1700
by
Danny Dot
on 02 Apr, 2009 17:43
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in a RTLS or TAL abort, how does the ET break up?? is there any danger of debris not desintegrating and reaching european or african cities???
In an RTLS, the shuttle/ET is thrusting back toward KSC and the tank is dumped in the western Atlantic.
In TAL, the shuttle reenters and glides to its touchdown. The ET would follow a ballistic trajectory that would put it into the eastern Atlantic.
I agree. No threat to land on either abort.
Danny Deger
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#1701
by
C5C6
on 03 Apr, 2009 00:18
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in a RTLS or TAL abort, how does the ET break up?? is there any danger of debris not desintegrating and reaching european or african cities???
In an RTLS, the shuttle/ET is thrusting back toward KSC and the tank is dumped in the western Atlantic.
In TAL, the shuttle reenters and glides to its touchdown. The ET would follow a ballistic trajectory that would put it into the eastern Atlantic.
I agree. No threat to land on either abort.
Danny Deger
I'm worried about ET debris hitting populated areas....
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#1702
by
ChrisGebhardt
on 03 Apr, 2009 00:32
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in a RTLS or TAL abort, how does the ET break up?? is there any danger of debris not desintegrating and reaching european or african cities???
In an RTLS, the shuttle/ET is thrusting back toward KSC and the tank is dumped in the western Atlantic.
In TAL, the shuttle reenters and glides to its touchdown. The ET would follow a ballistic trajectory that would put it into the eastern Atlantic.
I agree. No threat to land on either abort.
Danny Deger
I'm worried about ET debris hitting populated areas....
RTLS and TAL aborts are designed (and would be executed) to protect against that.
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#1703
by
Danny Dot
on 03 Apr, 2009 00:42
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in a RTLS or TAL abort, how does the ET break up?? is there any danger of debris not desintegrating and reaching european or african cities???
In an RTLS, the shuttle/ET is thrusting back toward KSC and the tank is dumped in the western Atlantic.
In TAL, the shuttle reenters and glides to its touchdown. The ET would follow a ballistic trajectory that would put it into the eastern Atlantic.
I agree. No threat to land on either abort.
Danny Deger
I'm worried about ET debris hitting populated areas....
All of the ET debris will land in the ocean. None will reach land. The orbiter is a glider, the debris is not. The debris will not go anywhere close to as far as the orbiter goes.
Danny Deger
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#1704
by
zerm
on 05 Apr, 2009 02:43
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Okay- I was talking to a 4th grade class about spaceflight and the following questions were asked and I had no idea:
How many miles have the combined shuttle fleet flown total to date?
How many people (individuals) have flown aboard shuttles so far?
I haven't got the exact numbers- but I'm sure someone out there can answer. Heck I was expecting questions like "Why's the ET orange?" and "do the astronaut's helmets ever get stuck on them?" These kids were sharp.
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#1705
by
daver
on 06 Apr, 2009 11:29
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RandS has reported that, "The largest nonuniform dispersion in shuttle tumble rate in history happened on the most recent flight.".
What would be the factors causing the burn rate differences to be getting worse?
How bad was it?
How close did it come to losing Discovery?
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#1706
by
Almurray1958
on 06 Apr, 2009 12:21
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Okay- I was talking to a 4th grade class about spaceflight and the following questions were asked and I had no idea:
How many miles have the combined shuttle fleet flown total to date?
How many people (individuals) have flown aboard shuttles so far?
I haven't got the exact numbers- but I'm sure someone out there can answer. Heck I was expecting questions like "Why's the ET orange?" and "do the astronaut's helmets ever get stuck on them?" These kids were sharp.
Zerm
look at the "Current Demographics" page of the
http://www.cbsnews.com/network/news/space/spaceplace/Downloads.html Lots of your answers are there
- Al
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#1707
by
Antares
on 06 Apr, 2009 14:39
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I get 478,127,044 miles; 2,977,900,788 seat miles prior to 119.
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#1708
by
mark147
on 06 Apr, 2009 23:02
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So, a future mission is being changed from 15+1+2 to 16+0+2.
The 15 or 16 is obviously the main mission duration.
I presume the other parts refer to the extra days available for weather wave offs and other problems on landing day but can someone explain more precisely what the '1' and the '2' refer to in a stated mission duration of 15+1+2?
Thanks.
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#1709
by
Jim
on 06 Apr, 2009 23:06
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1 is possible extension days for mission ops, 2 is for landing extension days
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#1710
by
LegendCJS
on 06 Apr, 2009 23:08
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I get 478,127,044 miles; 2,977,900,788 seat miles prior to 119.
Does that include the hops form the west cost landing site back to KSC via the 747?
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#1711
by
Antares
on 07 Apr, 2009 04:16
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Negative.
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#1712
by
MarsMethanogen
on 07 Apr, 2009 20:24
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#1713
by
Mach25
on 08 Apr, 2009 14:01
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1 is possible extension days for mission ops, 2 is for landing extension days
And each of the 2 landing extension days each have a specific (intended) purpose. One extends for weather issues (winds too high, clouds too low) and the other for systems issues or some sort of onboard equipment problem.
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#1714
by
Mach25
on 08 Apr, 2009 14:16
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All of the ET debris will land in the ocean. None will reach land. The orbiter is a glider, the debris is not. The debris will not go anywhere close to as far as the orbiter goes.
Danny Deger
At least we hope it will. The RTLS/ECAL and TAL abort scenarios are designed with ET impact point in mind. That said, whatever might cause such a scenario could just as easily affect the ability to shut down engines when you want to. For a very late TAL/downrange abort landing somewhere in the middle east or even to Diego Garcia, the ET could come down in central Europe, the Mediterranian, or Saudi Arabia depending on when MECO occurs. It has certainly occurred in simulations. The likelihood in reality, however, is very very remote.
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#1715
by
MikeMi.
on 08 Apr, 2009 22:41
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Hmm.. wondering what excatly means this phrase? Some special working?
edit: ahh too sleepy - miss add the most important part of my question
I meant about "hyper servicing".
Thanks for answers.
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#1716
by
ChrisGebhardt
on 08 Apr, 2009 23:07
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Hmm.. wondering what excatly means this phrase? Some special working?
edit: ahh too sleepy - miss add the most important part of my question I meant about "hyper servicing".
Thanks for answers.
Are you asking what "hyper servicing" means?
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#1717
by
MikeMi.
on 08 Apr, 2009 23:38
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Are you asking what "hyper servicing" means?
Yes. I couldnt find answer.
I suppose its connected with pad processing, but what correctly?
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#1718
by
Jim
on 09 Apr, 2009 00:03
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Are you asking what "hyper servicing" means?
Yes. I couldnt find answer.
I suppose its connected with pad processing, but what correctly?
Hypergol servicing. Loading of the OMS, RCS and APU propellants
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#1719
by
kraisee
on 09 Apr, 2009 12:19
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Can someone riddle me this:
What are the maximum "rates" for the Shuttle during ascent? I'm talking about pitch & yaw, how fast is the stack allowed to turn, as and when it has to.
It looks pretty slow based on the activity just after launch as she turns and pitches after clearing the tower. Eyeballing it, it looks somewhere around 1 degree per second, perhaps even less.
Anyone know what the limits actually are?
Ta,
Ross.
I meant about "hyper servicing".