Subj : Kerosene Engines
To   : Charles Radley
From : Andrey Kanunnikov
Date : Tue Jul 18 2000 04:53 am

Hello, Charles!

Sunday July 16 2000 10:53, Charles Radley wrote to Andrey Kanunnikov:

 CR>  For autonomous attitude control the interplanetary probes use a
 CR>  combination of gyros, star sensors and sun sensors.
 CR>  Sensors of the star  Canopus are popular, because  Canopus is a very
 CR>  bright star at 90 degress to the ecliptic (solar system plane).
But how does the star sensor determine what the star is it watching?

 CR>  For trajectory control, it is tracked by radar transponder,
 CR> mid-course correction manouvers are calculated by specialists at a
 CR> control center, and rocket burns are executed on control center
 CR> command.
This scheme of control is well when the space shuttle is operated 
simultaneously. But what will happend if the trajectory changed unexpected?
Time delay between signal transmitted to the Earth and recieved is to long.

                             I will glad to see you in the future. Andrey.

ÄÄÄ To drink or not to drink...?
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 * Origin: Who tasted tear of poppy that cry whole life... (2:5022/115.47)

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