"Chad Irby" wrote in message
. com...
In article ,
Alan Minyard wrote:

I am always amazed by the number of people that believe in "suitcase"
nukes. Can a physics package be small? Sure. Can one tote it around
in a suitcase? NO!!!

The "physics package" of a Minuteman III/Mk-12 is about 250 pounds once
you take it out of the reentry vehicle, and has a yield of 170 kilotons
or so.

Only if you disregard the HE required to get it to go boom; the W-79 was a
fairly good sized warhed all-up, with a diameter of around 21 inches and a
length of a bit over five feet. And I doubt any 250 pound "physics package"
has a yield of 170 Kt. If that were the case, the freefall bombs like the
the B-61, which did not need all of the protection an RV has to have, would
have weighed in at less than the 700 pounds or so that they do.


It's small enough to fit into one of my suitcases, and weighs less than
some things I've shipped airfreight during road shows. For example, it
weighs about half that of a professional video projector in a road case,
and is about three times the bulk.

The W-44 ASW warhead was about 170 pounds, and was certainly small
enough to fit into a suitcase or trunk (less than 1 foot diameter), with
a yield of 10 kilotons or so.

No, the W-44 was about 14 inches in diameter, and over 25 inches long. See:
http://gawain.membrane.com/hew/Usa/W.../Allbombs.html


The W-25 warhead for the Genie AAM was about 220 pounds, and gave a
yield of about 1.7 kilotons.

Any of these could be considered a "suitcase" nuke, but not a
"briefcase" one.

The smallest warhead we ever fielded was the W-54, at around sixty or so
pounds and a diameter of around 12 inches. When configured into your
"suitcase" (hate that term) mode as SADM, the weight went up a bit, to a bit
over 100 pounds.


But you also have to consider that the actual "pit" is very small
(grapefruit or thermos sized, according to the design), with explosives
wrapped around it (not that much, actually) and triggered with some
high-precision electronics. The problem in the past was that the
electronics and power supply were a major weight addition to the weapon,
and that we've had a half-century of electronics advance to make that
part pretty small.

But in fact the miniturization has not advanced all that much since the days
of the earlier devices like the W-54. You are stuck with a 12 plus inch
dimension any way you go aout it for a spherical device; you can go lower
with linear implosion, but then your length increases. The dimensions and
weight of the 155mm rounds did not dramatically change (W-48 from 1963 at
6.5 inches by 33 inches and 118 pounds versus the W-82 cancelled in 1990, at
34 inches and 95 pounds) over the decades.


The whole apparatus would have to be no larger than a couple of
footballs (or a basketball plus a laptop computer), and less than 50
pounds, for a yield of a kiloton or so.

Less than 50 pounds? I doubt that. W-54 remains king of lilliputs as of now,
and it was 59 pounds, with a maximum yield of around a quarter of a kiloton.

Brooks


And a thousand tons of explosives, plus radiation effects? Pretty hard
to ignore.

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