Re: OT: The Truth About Predator Drones

What would it cost to make a scaled-down TOW missile? ...Jim Thompson

The validity of the text comes into question.

The 787 will have a live link to a satellite for its Internet hooks. It sits under a small dome, and the "modem" is a transit case that is about

I doubt very seriously that the hard wired flight control circuits are on ANY network, much less this one.

You're an idiot, and you would never deserve ANY money.

You are not smart enough to warrant NRE, and YOU would never win any such contract.

The way you are in this thread bad-mouthing everyone and his brother that may or may not have been involved with this, I'd say that you do not really know how it gets done at all.

What YOU are doing is inexcusable, particularly since you DO NOT know what actually happened, much less ANY of the particulars of what actually happened.

You are a guess as you go asshole, at best.

No. The facts are that JTRS HAS had HUGE "chunks" of requirements and technological needs ADDED to it, so ANY of the original cost estimates are going to be way off, of course. Also, nearly all of the original observations on its feasibility, etc. are askew as well.

The program is doing fine, and will succeed.

You keep missing the FACT that huge requirements were ADDED, idiot.

You're an idiot. Most digital links can handle up to 10 percent bit error rate before correction coding fails to fix it.

Or simply change the key so often that any brute force hackers will fail to decrypt anything inside any effective time frame.

And absolutely not applicable in all situations. There are many requisites that still require quality assurance beyond that which can be counted on via COTS utilization.

In fact, most mission critical systems still use many of the military and government standards and that rules out a lot of COTS components.

Today's modern CPUs put out less heat per cycle and exhibit less heat per "MHz" of "operating speed".

The Athlon family and the Cell are perfect examples of more work done with less heat than a 66MHz Pentium, so I am quite sure that they are using more advanced CPUs than that.

Link budget is what matters, and is the main argument for wanting a new constellation of military networking satellites.

I think eventually, they will put up a new string, but right now, we have bigger (slower) fish to fry, and our frying pans are doing just fine, albeit showing signs of being taxed.

In comp.dsp Archimedes' Lever wrote: (snip)

Right units. I believe it is true compared to NMOS processors, maybe not to early CMOS processors. NMOS uses a pull-up resistor and dissipates power independent of clocking. CMOS pretty much only dissipates power when changing state. (Except that newer technology have significant tunneling currents as devices get smaller.)

Wrong units. Heat is energy or power times time. So heat (energy) per cycle or power (energy/time) per clock frequency (cycles/time). For heat/MHz you have to multiply by time, which is likely longer for current processors than older ones. (They run longer!)

-- glen

Generally not. Raw BER for BPSK at 0dB is less than 10 percent, and few codes can operate that far down. Even capacity-approaching codes generally need input error rates higher than that.

Can you name a code and what code rate would be required to operate with an input BER of 10e-1? I wouldn't think anyone would use a deep-space code on a satellite because of bandwidth efficiency issues.

And those error bits don't cost anything to send? What a moron you are, AlwaysWrong. Oh, and I forgot, you're always wrong too.

...and changing keys is free (hint: key management)? I know it's difficult for you DimBilb but read before replying.

Jim Thompson wrote in news: snipped-for-privacy@4ax.com:

a "model rocket" like an Estes or Aerotech,or a working guided missile?

(the TOW Anti-Tank Guided Missile[ATGM] is wire-guided,trails a pair of wires that provide guidance to the missile.)

FYI,here's more on the Navy Spike;

I know. I know. _Many_ of my hybrids circuits are in the TOW... remember it was Hughes _Tucson_.

...Jim Thompson

Jim Thompson wrote in news: snipped-for-privacy@4ax.com:

well,you don't want to have wires dragging from your car after you've taken care of some MFFY driver up ahead. ;-)

that's why Spike is so appropo; you lock in their image,launch,and Spike does the rest on it's own,you are free to leave...with no wires trailing.And Spike's small warhead means little "collateral damage". it actually blows up INSIDE the vehicle. :-) it's also a FAST little missile.600 MPH in 1.5 sec.

MFFY; "Me First,F-You".

I have in mind some stationary targets ;-) ...Jim Thompson

Anybody have design details for a small rail gun ?:-) ...Jim Thompson