"Harry Andreas" wrote in message
...
In article , "Tarver Engineering"
wrote:

"Harry Andreas" wrote in message
...
In article , John Cook
wrote:


Just the official reports!!, Lockheed has only purchased enough
processors for 155 F-22's because there out of production, the
demand
for Air to ground operations has increased the demand on processing
power, something the original processors are not quite upto hence
the
_need_ for the 'upgrade'.

So the processors are obsolete, (too old)... the Avionic
architecture
needs to be replaced before the F-22 can become the F/A-22 because
the
present system is based on the old processors and rewriting the code
is pointless on an obsolete system, that would only support half of
the F-22 fleet

Methinks there's some confusion there between processors, avionics
architecture, and software.
While it's true that Intel tried to shut down i960 production causing
a
chinese fire drill, there are enough assets to get by until a new
processor is
ready.

Intel has agreed to provide mil-spec i960s, thanks to a very fat check
from
USAF. The new processor has already failed to be integrated, due to a
loss
of tracability. (ie scrap)

That has nothing to do with the avionics architecture, which is
not changing. Plus the whole point of writing all the OS and AS in
Ada was
to be as platform independent as possible, so that upgrades to the CIP
could be relatively painless and not force re-flight testing of the
A/C.
Ideally, one would not re-write the code, but re-compile the code for
the new platform, then do a LOT of integrity checks, and take it from
there...

They have to go with a more COTS based system (similar to, if not
the
same as the JSF), which they are working on now, for fielding in
(very
optomisticlly) in 2007.

Other than using commercialy available processor chips, what is "COTS"
about it?
Hint - nothing.

Wrong. Name for us the one and only modern processor that is mil-spec,
Harry.

You have my comment exactly backwards.
I claim that JSF is NOT more COTS that F-22 because F-22 is using
commercial
parts, too.

Steidel was at F-35 after his successful engagement at F/A-18E. COTS is a
disaster waiting to happen without the constraints of the RPL Model. The
first thing Lockheed did when they got Power PC processors in was lose
tracability. They do not even have the dicipline to control Mil-Spec parts,
how can anyone expect them to understand the new reality?

And that JSF is taking commercial parts and building a full
mil-spec system, the end item being non-COTS, although made from
COTS parts.

The RPL Model is all there is, incarnations available from Federal Electric
Corporation, Rome Labs and SAE's as AS9100 large shop adaptation. (see new
CFR14 Part 145)

The usual process since the early 90's.

You are way behind the power curve Harry. Have a look at the fleet numbers
for reliabilty for the F/A-18E vs the F-14s. Think about how the F-22's
target number compares.