Military Aircraft To Get All-Fiber Network Gear
coondoggie writes "Looking to significantly reduce weight, improve on-board communications and make it easier to upgrade avionics, the US military is developing prototype phonic gear for use in all aircraft. Behind such a drastic shift is a Defense Advanced Research Projects Agency project with an ungainly moniker: Network Enabled by Wavelength division multiplexing Highly Integrated Photonics (NEW-HIP)."
Now our military has more stuff, we might be able to stand a chance against another military for the first time in a long time!
From the summary: "prototype phonic gear" - are they going back to speaking tubes like the ones on old ships?
-Snorbert, somewhere in the antipodes
Oh they just called it that so they could say: "This plane needs a HIP replacement!"
Assuming that a typical Cat5e cable can do about a Gbps, each of these cables are equivalent to about 30 cat5's. So unless these things weigh over 30 times what a cat5 does, they'll be significantly lighter.
Sigs are too short to say anything truly profound so read the above post instead.
Don't forget that the copper cables need to be shielded against interference, while fibre is much more robust.
http://michaelsmith.id.au
Once your fibre cable is installed without kinks it should be okay. As for training I worked for our road transport agency where we ran our own fibre network for CCTV signals. We sent our techs away for training on how to handle splicing, etc and they handled it okay.
http://michaelsmith.id.au
Not immune to visible light (which is also electromagnetic) but if the light is strong enough to scramble your data I suspect the crew may have more pressing problems.
http://michaelsmith.id.au
"I worked in a public school district and we weren't allowed to move any cable over 2 meters long, nothing in the dropped false ceiling, couldn't fix a cable, splice or crimp Cat-5 because of code."
Which is precisely the kind of thing that so pisses off citizens and causes them to complain about the costs of schooling. You make it sound like a hardcore Union shop... which in a way it probably is.
Those kinds of rules are BS. Tenure is BS. Top-heavy administrations are BS. Federal interference in curriculum and school lunch programs is BS. The list goes on...
The F-22 and F-35 already use IEEE-1394 (aka "FireWire") as their primary data carriers between parts of the aircraft, over shielded copper wires. Is optical cabling really that much lighter that this matters?
Another non-functioning site was "uncertainty.microsoft.com."
The purpose of that site was not known.
To put my point a different way: one of the big problems I see today is the refusal of the Federal government to just let failures fail. Look at the bailouts if you want examples.
As long as the companies -- and schools -- that are failing are propped up by the efforts and money of those that aren't, the failures will never stop failing, and the overall quality will continue to go down.
I would imagine that the shielding has to be especially robust in military equipment, as it should be EMP resistant.
I dont know. Vibrations, fatigue? Unless they use some plastic fibers and not glass, Im not sure how well it would resist fracturing compared to metal wires. It will also raise costs like crazy. Although hey its the military. They dont have budget problems like NASA.
Seems like a huge market out there.
Because they sure as hell aren't going to redesign existing avionics.
I am very small, utmostly microscopic.
Speaking as a licensed electrical engineer that did the network cabling for my office, a matures shouldn't be doing it above the ceiling.
Code issues: You need proper, dedicated support wires for the cables. Do you have Powder activated anchor gun... and proper training? Are you using plenum cables in the ceiling? Are you keeping the cables off the ceiling tiles?
Practical issues: Are you pulling against any MC cable that you could pierce the armor and insulation with enough force? Are you going to cut yourself on any sharp metal? Are you wearing a hard hat and safety glasses above the ceiling so you don't get stabbed by other anchor wires? Can you spot asbestos?
There are even simpler things... do you know how to safely use a ladder?
Unfortunately, between workman's comp, risk of a lawsuit, and even general good practice, it doesn't really make good sense to have non-professionals pull cables. Now, if it wasn't for warranty issues, having your own tech do the terminations would be fine... but then how do you hold the other guy accountable for a pinched cable?
There are rational limits, but those are hard to define at an organization level.
Not sure what you're asking, but each military aircraft has several grounding points that use a standard RCA jack for the aircraft and an alligator clip (OK, a big one) on the other end of the wire that grounds the aircraft to a common ground in the concrete. As for in the air, there are electro-static dischargers on the trailing edges that help dissipate charges that build up, but in the case of a lightning strike, well, just about anything goes...
Impetuous! Homeric!