"Carey" ha scritto nel messaggio
news:325io.3866$2N5.841@newsfe12.iad...
> Anthony Buckland wrote:
>> "SolomonW" wrote in message
>> news:SwKho.57761$45.932@newsfe29.ams2...
>>> On Tue, 7 Sep 2010 12:28:45 -0700 (PDT), careysub@... wrote:
>>>
>>>> If the allies had decided to use gas in WWII, employing bomber forces
>>>> to drop it once air superiority was established, which would have
>>>> enabled establishing instantly lethal concentrations over several
>>>> square miles at a time, then views on the possible effectiveness of
>>>> gas today would be different (but it would be remembered even less
>>>> fondly).
>>> Imagine the effect on the fire bombing of Tokyo if gas had been used by
>>> the
>>> allies in the mix.
>>
>> Yes, although I'd like to see some evidence about that
>> "instantly lethal concentrations over several square
>> miles at a time". That sounds like a monumental
>> weight distributed with exquisite accuracy under such
>> potentially trying circumstances as night, wind (including
>> fire storm wind), and even token resistance from the
>> ground.
>
> For air delivery large capacity (1000 lb) bombs would have been preferred,
> which hold from about 100 kg of agent (hydrogen cyanide) to 200 kg
> (phosgene).
>
> When one of these bomb bursts it instantly disperses the agent over an
> area of something like one hectare, and the cooling effect of the
> immediate evaporation of the agent (they boil at 25 C and 7.6 C
> respectively) causes the formation of a stable low lying vapor cloud with
> a high enough concentration to cause fatal exposure in on the order of a
> minute. (A little math: 10,000 square meters of a cloud 5 meters deep is
> 50,000 cubic meters, 200 kg of agent makes an average concentration of
> 4000 mg/m^3, phosgene is lethal at exposures of 3200 mg-min/m^3)
>
> This means that each individual bomb creates a significant zone of lethal
> gas coverage, and it does so regardless of where it lands. If one drops
> 2000 tons of these bombs (a large bombing raid) then 4000 hectares are
> covered with these clouds (some 15 square miles).
>
I think the other poster's point is that there will be overlapping clouds.
And it's a fair point.
> Very rough bombing accuracy suffices for this sort of attack.
>
And that balances the overlapping.
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