Forum Discussion
BenK
Mar 14, 2012Explorer
A lot of today's anything/everything/etc are designed by kids via CAD that they
can dial in/out margin and orchestrate the whole much, much tighter...ending up
with less margin.
Factored by bean counter management that only focus on the bottom line
costing WITHOUT any concern of the product itself
This then has huge potentials of cascading failures whereas in the old days it
too had a similar cascading potential, but it stopped at one component or system
that has more margin
Today's designs do NOT leave much if anything on the table anymore
Plus in the old slide rule days, the designers had a better 'feel' for whatever
they were designing. So they also knew where to spend more time and design in
more margin, or whatever to increase that area's reliability
On highly orchestrated systems...if ANYTHING breaks or has a weakness ID'd...CHANGE
or FIX it FAST, as it will take down the adjacent associated components/systems
Just take a look at 'civilian' specifications for anything vs a very similar
'military' specification. Very different usage, service and longevity metrics
One special program one of my guys got us into was a graphics card cage based
on one we already had working in the labs
The form factor and heat management was in the star wars range and it did turn
out to be the graphics system for a future fighter, now being built.
The boards had to have a metalized layer that contacted the slide rails that had
liquid cooling. The heat sink was that metalized layer to the card cage.
Turns out that the fighters today 'fight' so far out there, it is out of human
vision. Profiles compared against the DB to provide the pilot a choice...friend
or foe, so shoot or not.
NO radar, nor anything else we knew of, just data input from some mystery sensor(s)
Try to reject +4KW of heat without air, inside a pilot's environment and make
NO noise (RF, heat, mechanical, etc, etc) in a form factor less than a 'XX' inch cube
can dial in/out margin and orchestrate the whole much, much tighter...ending up
with less margin.
Factored by bean counter management that only focus on the bottom line
costing WITHOUT any concern of the product itself
This then has huge potentials of cascading failures whereas in the old days it
too had a similar cascading potential, but it stopped at one component or system
that has more margin
Today's designs do NOT leave much if anything on the table anymore
Plus in the old slide rule days, the designers had a better 'feel' for whatever
they were designing. So they also knew where to spend more time and design in
more margin, or whatever to increase that area's reliability
On highly orchestrated systems...if ANYTHING breaks or has a weakness ID'd...CHANGE
or FIX it FAST, as it will take down the adjacent associated components/systems
Just take a look at 'civilian' specifications for anything vs a very similar
'military' specification. Very different usage, service and longevity metrics
One special program one of my guys got us into was a graphics card cage based
on one we already had working in the labs
The form factor and heat management was in the star wars range and it did turn
out to be the graphics system for a future fighter, now being built.
The boards had to have a metalized layer that contacted the slide rails that had
liquid cooling. The heat sink was that metalized layer to the card cage.
Turns out that the fighters today 'fight' so far out there, it is out of human
vision. Profiles compared against the DB to provide the pilot a choice...friend
or foe, so shoot or not.
NO radar, nor anything else we knew of, just data input from some mystery sensor(s)
Try to reject +4KW of heat without air, inside a pilot's environment and make
NO noise (RF, heat, mechanical, etc, etc) in a form factor less than a 'XX' inch cube
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