Author Topic: USA 193 - imaged  (Read 14633 times)

Online Blackstar

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RE: USA 193 - imaged
« Reply #20 on: 09/20/2007 08:53 PM »
Quote
Chris Bergin - 20/9/2007  9:56 AM

We'll eventually merge this into the NRO L-21 thread.

Why do that?  Moving threads around simply makes it harder for the people participating in them to find them.  It doesn't make it easier for anybody else.

Offline TJL

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RE: USA 193 - imaged
« Reply #21 on: 09/20/2007 11:30 PM »

Offline tnphysics

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Re: USA 193 - imaged
« Reply #22 on: 09/21/2007 12:46 AM »
such as?

Offline Chris Bergin

RE: USA 193 - imaged
« Reply #23 on: 09/21/2007 12:53 AM »
Quote
Blackstar - 20/9/2007  9:53 PM

Quote
Chris Bergin - 20/9/2007  9:56 AM

We'll eventually merge this into the NRO L-21 thread.

Why do that?  Moving threads around simply makes it harder for the people participating in them to find them.  It doesn't make it easier for anybody else.

Because it's related to the NRO L-21 thread. The starter of this thread re-posted his opening post into that aforementioned thread, so we had two threads on the same subject running at the same time. The solution is to keep it on this thread, then merge with the other for a one stop reference relating to NRO L-21. Makes perfect sense.

Offline satcomuk

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Re: USA 193 - imaged
« Reply #24 on: 09/21/2007 08:37 AM »
Hi Chris,

No problems as far as I am concerned .  If I had found the original thread I would have posted there anyway....and my images are a natural follow on to the theme of the NRO L-21 posts.

John

Offline satcomuk

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Re: USA 193 - imaged
« Reply #25 on: 09/21/2007 08:42 AM »
From TJL's image , has anyone calculated the height of the fairing on the L21 launch ?

If I am seeing the bus...and nothing else , then the size of 4 -  4.5 meters seems to tie in

Offline Jim

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Re: USA 193 - imaged
« Reply #26 on: 09/21/2007 11:03 AM »
Shroudology isn't needed.  There are only 2 composite fairing types for Delta II.  10 and 10L, the lengths are the planners guide and launch pictures would show which one.

Offline Jester

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Re: USA 193 - imaged
« Reply #27 on: 09/21/2007 12:48 PM »
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Jim - 21/9/2007  1:03 PM

Shroudology isn't needed.  There are only 2 composite fairing types for Delta II.  10 and 10L, the lengths are the planners guide and launch pictures would show which one.

There are 3 fairing types, a 9.5ft diameter fairing (aluminum skin-and-stringer type) a 10 ft diameter fairing and a extented 10 ft diameter fairing (10L) with a lengthened cylindrical section of 3.2 ft

Offline Jim

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Re: USA 193 - imaged
« Reply #28 on: 09/21/2007 01:36 PM »
9.5 don't launch off the west coast anymore for two stage missions

Online Blackstar

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RE: USA 193 - imaged
« Reply #29 on: 09/21/2007 01:43 PM »
Quote
The solution is to keep it on this thread, then merge with the other for a one stop reference relating to NRO L-21. Makes perfect sense.

Except that at some point the people who are participating in this thread are suddenly going to look for it and not be able to find it--and they're going to be confused and probably not happy that the thread that _they were participating in_ was yanked away and put somewhere else.

If a thread is active and generating replies, why mess with it?

Offline Chris Bergin

RE: USA 193 - imaged
« Reply #30 on: 09/21/2007 01:53 PM »
Quote
Blackstar - 21/9/2007  2:43 PM

Quote
The solution is to keep it on this thread, then merge with the other for a one stop reference relating to NRO L-21. Makes perfect sense.

If a thread is active and generating replies, why mess with it?

You've misread my comment(s).

"We'll eventually merge"

"to keep it on this thread, then merge"

In other words, when this thread becomes inactive and falls down the listing, we'll be merging it as mentioned. Otherwise, when people use the search fuction, there's a chance they'll find two seperate threads, when one would be best.

Offline satcomuk

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RE: USA 193 - imaged
« Reply #31 on: 09/22/2007 08:50 AM »
Looking at 193 a little closer leads me to think that the basic  design of this bird was similar to the Hughes 702 Bus.

Offline Analyst

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RE: USA 193 - imaged
« Reply #32 on: 09/22/2007 11:34 AM »
HS 702 (like HS 601 or whatever Boeing calls it now) is to large to fit into a Delta 2 fairing. Besides, these buses are primarly for GEO, a very different thermal environment.

Assuming USA-193 is some kind of earth observing craft (as indicated by its orbit) I guess it could be based on the EOS birds Aqua and Aura: They are buses for earth observing sensors and used a Delta 7925 with an extended composite fairing. What fairing did USA-193 use? Normal composite or extended composite?

Analyst

Offline TJL

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Re: USA 193 - imaged
« Reply #33 on: 09/22/2007 04:45 PM »
Here is a link on the Delta launch vehicle fairings...

http://kevinforsyth.net/delta/vehicle.htm#fairings

Offline Jim

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RE: USA 193 - imaged
« Reply #34 on: 09/22/2007 05:26 PM »
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Analyst - 22/9/2007  7:34 AM

Assuming USA-193 is some kind of earth observing craft (as indicated by its orbit) I guess it could be based on the EOS birds Aqua and Aura: They are buses for earth observing sensors and used a Delta 7925 with an extended composite fairing. What fairing did USA-193 use? Normal composite or extended composite?

Analyst

It was an LM spacecraft so that rules out the EOS bus

Online wannamoonbase

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Re: USA 193 - imaged
« Reply #35 on: 09/22/2007 07:09 PM »
Seems that the NRO is having a hard time shaking their moto: 'You can buy better but you can't pay more.'

Someone should get posted to the north slope of Alaska midwinter for screw ups like this.
Jonesing for a copy of 'Tales of Suspense #39'

Offline Jim

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Re: USA 193 - imaged
« Reply #36 on: 09/22/2007 09:42 PM »
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wannamoonbase - 22/9/2007  3:09 PM

Seems that the NRO is having a hard time shaking their moto: 'You can buy better but you can't pay more.'

Someone should get posted to the north slope of Alaska midwinter for screw ups like this.

Caca happens

Offline SFox

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RE: USA 193 - imaged
« Reply #37 on: 09/23/2007 02:20 AM »
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satcomuk - 19/9/2007  1:57 PM

For the first time , since it failed , I have managed to image USA 193.

The angular dimension of satellite is approximately equal to the disk of Mars.
The angular dimension of the disk of Mars on 18 September 8.9''
On the distance of 340 km this corresponds to the linear dimension of satellite on the order of 14  meter.
“The NRO was once an intelligence organization at the beginning of the space age; now, it is a space agency in the information age...” ©Robert Kohler

Offline Jim

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RE: USA 193 - imaged
« Reply #38 on: 09/23/2007 02:26 AM »
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SFox - 22/9/2007  10:20 PM

Quote
satcomuk - 19/9/2007  1:57 PM

For the first time , since it failed , I have managed to image USA 193.

The angular dimension of satellite is approximately equal to the disk of Mars.
The angular dimension of the disk of Mars on 18 September 8.9''
On the distance of 340 km this corresponds to the linear dimension of satellite on the order of 14  meter.

That number is too big

Offline SFox

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Re: USA 193 - imaged
« Reply #39 on: 09/23/2007 02:38 AM »
Big. But this can be not the size of body, but the size of some deployment constructions.
“The NRO was once an intelligence organization at the beginning of the space age; now, it is a space agency in the information age...” ©Robert Kohler

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