Subj : Re: Kerosene Engines
To   : Charles Radley
From : Vadik Akimoff
Date : Mon Aug 07 2000 01:54 pm

Hello.

In a message of 10 Sep 36 Charles Radley wrote to Andrey Kanunnikov:

 CR>>  The Shutte computer memory is specially rugged, and at the time it
 CR>>  was designed (1972), it was a lot
 AK>> But what about modern computers? I think it has very much differences.

 CR>  Spacecraft computers are always several years behind the commercial
 CR> market, the Shuttle is currently over 10 years behind.   The ISS
 CR> (International Space Station)  I think uses  486  architecture.

I think 486 architecture isn't a good idea. 486 processor itself is rather
monstrous & not very effective, with very high power consumption... Not for
spacecrafts...

Maybe better idea is to use well-known 68k architecture (I do so :), or one
of the modern RISC architectures...


 AK>> ;-) By the way, does there use hard disks or just only RAM and ROM?
 CR>  I believe the Shuttle GPCs use RAM, software loads are changed in
 CR> flight by loading them from tape cartridges.

:)))


Also I know little about computer of our 'shuttle' called Buran.

It's processor was a clone of VAX processors. There were troubles to make a
copy of that processor, AFAIK...

And as you must know, first (and unfortunately last) Buran flight was fully
humanless, under control of Buran's computer.


Unfortunately, I don't know anything about MIR station computer
architecture... :(



Bye...

 
* Origin: 68k powered (2:5022/115.37)

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