Author Topic: USA 193 - imaged  (Read 14761 times)

Offline satcomuk

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RE: USA 193 - imaged
« Reply #40 on: 09/23/2007 06:57 AM »
This is exactly why I imaged Mars before  catching 193.....to provide a comparison.

In the image below we can see that the bus is less than half , more like a third the diameter of the disk of Mars.

The small appendages top and bottom may be partlydeployed structures , possibly dish antenna.

Offline SFox

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RE: USA 193 - imaged
« Reply #41 on: 09/23/2007 08:58 AM »
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satcomuk - 23/9/2007  10:57 AM

In the image below we can see that the bus is less than half , more like a third the diameter of the disk of Mars.


I.e., are about 5 meter. But on the basis of the dimensions of nose fairing even this estimation of the dimensions of bus is represented several that overstated. Probably, the construction of satellite is very complex, with many deployment elements - moreover these elements were expanded in the flight (at least partially).

"[Image]"http://www.spaceflightnow.com/delta/d322/061214launch/11.jpg" />
“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 satcomuk

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RE: USA 193 - imaged
« Reply #42 on: 09/23/2007 09:14 AM »
Its a bit easier to compare dimensions if we look at an object imaged nearer to the same range.

Here we see ISS at 400 km.....compare the size of the 193 bus , with the dimensions of the truss radiator.


"  The rear of the S0 Truss is occupied by a 6.4-meter (21-foot) radiator panel,  "
http://www.nasa.gov/mission_pages/station/structure/elements/its.html


Again , in this composite image , objects are to scale and were taken with the same lens configuration.


Offline satcomuk

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RE: USA 193 - imaged
« Reply #43 on: 12/23/2007 05:55 PM »
After a long wait , USA 193 finally came within my sights again this evening....and with a different sun angle a little more detail was revealed.

I am still of the opinion that the solar panels did not deploy.
The pass was fast and furious , but seemed fully lit. Direction of travel right to left.

[Edit] Span estimated to be no more than 4 metres.

Offline aero313

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Re: USA 193 - imaged
« Reply #44 on: 12/23/2007 09:23 PM »
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Jester - 21/9/2007  8:48 AM

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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

Go back and read that first quote, which correctly noted that there are only two COMPOSITE fairing types.  As you point out, the 9.5 ft fairing is metal.

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