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Bat Bomb
25 November 2017, 09:09

Posted on 01/15/2018 4:41:43 PM PST by keat

Bat bombs were an experimental World War II weapon developed by the United States. The bomb consisted of a bomb-shaped casing with over a thousand compartments, each containing a hibernating Mexican free-tailed bat with a small, timed incendiary bomb attached. Dropped from a bomber at dawn, the casings would deploy a parachute in mid-flight and open to release the bats, which would then roost in eaves and attics in a 20–40 mile radius. The incendiaries would start fires in inaccessible places in the largely wood and paper constructions of the Japanese cities that were the weapon's intended target.

The bat bomb was conceived by a Pennsylvania dentist named Lytle S. Adams, a friend of First Lady Eleanor Roosevelt. Adams submitted it to the White House in January 1942, where it was subsequently approved by President Roosevelt on the advice of Donald Griffin.

Adams observed that Japanese structures were especially susceptible to incendiary devices as many of the buildings were made of paper, bamboo, and other highly flammable material. The plan was to release bat bombs over Japanese cities having widely dispersed industrial targets. The bats would spread far from the point of release due to the relatively high altitude of their release, and would then hide in buildings across the city at dawn. Shortly thereafter, built-in timers would ignite the bombs, causing widespread fires and chaos.

The United States decided to develop the bat bomb during World War II as four biological factors gave promise to this plan. First, bats occur in large numbers (for example, four caves in New Mexico are each occupied by several million bats). Second, bats can carry more than their own weight in flight (females carry their young—sometimes twins). Load-carrying tests were conducted in the dirigible hangar at Naval Air Station, Moffett Field, Sunnyvale, California. Third, bats hibernate, and while dormant they do not require food or maintenance. Fourth, bats fly in darkness, then find secluded places (often in buildings) to hide during daylight.

Bomb canister used to hold the hibernating bats

By March 1943, a suitable species had been selected. The project was considered serious enough that Louis Fieser, the inventor of military napalm, designed 0.6 ounce (17 g) and one ounce (28 g) incendiary devices to be carried by the bats. A bat carrier similar to a bomb casing was designed that included 26 stacked trays, each containing compartments for 40 bats. The carriers would be dropped from 5,000 feet (1,525 m). Then the trays would separate but remain connected to a parachute that would deploy at 1,000 feet (305 m). It was envisioned that ten B-24 bombers flying from Alaska, each carrying a hundred shells packed with bomb-carrying bats, could release 1,040,000 bat bombs over the target of the industrial cities of Osaka Bay.

Mexican Free-Tailed Bat Tadarida brasiliensis

A series of tests to answer various operational questions were conducted. In one incident, the Carlsbad Army Airfield Auxiliary Air Base.

32°15′39″N 104°13′45″W) near Carlsbad, New Mexico, was set on fire on May 15, 1943, when armed bats were accidentally released. The bats incinerated the test range and roosted under a fuel tank.

Errant bats from the experimental bat bomb set fire to the Carlsbad Army Airfield Auxiliary Air Base in New Mexico

Following this setback, the project was relegated to the Navy in August 1943, who renamed it Project X-Ray, and then passed it to the Marine Corps that December. The Marine Corps moved operations to the Marine Corps Air Station at El Centro, California. After several experiments and operational adjustments, the definitive test was carried out on the "Japanese Village", a mockup of a Japanese city built by the Chemical Warfare Service at their Dugway Proving Grounds test site in Utah.

Observers at this test produced optimistic accounts. The chief of incendiary testing at Dugway wrote:

A reasonable number of destructive fires can be started in spite of the extremely small size of the units. The main advantage of the units would seem to be their placement within the enemy structures without the knowledge of the householder or fire watchers, thus allowing the fire to establish itself before being discovered.

The National Defense Research Committee (NDRC) observer stated: "It was concluded that X-Ray is an effective weapon." The Chief Chemist's report stated that, on a weight basis, X-Ray was more effective than the standard incendiary bombs in use at the time: "Expressed in another way, the regular bombs would give probably 167 to 400 fires per bomb load where X-Ray would give 3,625 to 4,748 fires."

More tests were scheduled for mid-1944 but the program was cancelled by Fleet Admiral Ernest J. King when he heard that it would likely not be combat ready until mid-1945. By that time, it was estimated that $2 million had been spent on the project. It is thought that development of the bat bomb was moving too slowly, and was overtaken in the race for a quick end to the war by the atomic bomb project. Adams maintained that the bat bombs would have been effective without the devastating effects of the atomic bomb. He is quoted as having said: "Think of thousands of fires breaking out simultaneously over a circle of forty miles in diameter for every bomb dropped. Japan could have been devastated, yet with small loss of life."

The infamous "Invasion by Bats" project was afterwards referred to by Stanley P. Lovell, director of research and development for Office of Strategic Services (OSS), whom General Donovan ordered to review the idea, as "Die Fledermaus Farce". Lovell also mentioned that bats during testing were dropping to the ground like stones.


TOPICS: Military/Veterans; Pets/Animals
KEYWORDS: ww2
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To: keat

Years ago Dave Berry told this true tale, finishing up speculating that the idea could have ended up parachuting Buffalo because of their greater payload capacity.


21 posted on 01/15/2018 5:58:33 PM PST by Rurudyne (Standup Philosopher)
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To: JoeProBono

“Leave us alone, Mel Brooks!”

https://youtu.be/qhmwE0tW6lQ


22 posted on 01/15/2018 6:02:40 PM PST by Rurudyne (Standup Philosopher)
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To: keat

The poor little bats...

When I was little, a bat flew into my bedroom one night, and the next morning, my father insisted that I had a nightmare. I insisted, and we found the bat under the curtains.

While bats can carry rabies, they’re among the most voracious predators of flying insects.

Mark


23 posted on 01/15/2018 6:11:07 PM PST by MarkL (Do I really look like a guy with a plan?)
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To: yarddog
I saw that program recently. The gist I remember was the bombs were extremely effective. The bats would kind of hibernate during transport because of the low temps, then wake up as the canister was released and got nearer to the ground. Dropped in daylight, they would naturally seek out the dark crevices, which tended to be eaves under the roofs of wooden buildings. As I recall, the show claimed the bat bomb's funding got pulled lated in the war because of the success of the Manhattan project.
24 posted on 01/15/2018 6:12:38 PM PST by Ragnar Danneskjöld
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To: Ragnar Danneskjöld

I think you stated it more accurately.

Thanks.


25 posted on 01/15/2018 6:16:38 PM PST by yarddog
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To: keat
Bat bomb! Image and video hosting by TinyPic
26 posted on 01/15/2018 6:17:38 PM PST by tumblindice (America's founding fathers: all white armed conservatives)
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To: SamAdams76

Actually there were many off the wall military projects undertaken during WW2.

The Brits worked on an aircraft carrier made of pykrete, basically wood shavings and ice, to patrol the Atlantic to secure the convoys that were supplying the English war effort.

https://en.m.wikipedia.org/wiki/Project_Habakkuk

People also made fun of Churchhills “funnies”. The tanks outfitted with flails and other things for special circumstances. They laughed until the things proved effective.
Unfortunately Ike gave General Bradley the decision to use the funnies or not.
Bradley declined except for the DD tank.
The American soldiers paid the price for Bradley’s lack of vision.

The “Funnies” were actually designed by Major General Percy Hobart from the lessons learned at Dieppe.

Hobarts Funnies
http://military.wikia.com/wiki/Hobart%27s_Funnies


27 posted on 01/15/2018 7:35:34 PM PST by oldvirginian (Its for the children and kick the can down the road. Two phrases that make my trigger finger twitch.)
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To: oldvirginian

the special purpose was to clear landmines and was very effective. I believe the same process is still in use today in some areas of the world.


28 posted on 01/15/2018 10:01:42 PM PST by dirtymac
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To: oldvirginian

the special purpose was to clear landmines and was very effective. I believe the same process is still in use today in some areas of the world.


29 posted on 01/15/2018 10:02:06 PM PST by dirtymac
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To: dirtymac

They also had tanks with rolls of canvas that enrolled ahead of the tank to allow it an following vehicles to traverse the sand.

There were tanks with bridging on top to allow tanks and trucks to go over it to traverse gulleys and small streams.
There were flame thrower tanks, ones built to set explosives against walls and bunkers, siege tanks with mortars and a gaggle of others.

The Israelis use the flail and a variation of the hedge buster developed by the US.


30 posted on 01/15/2018 11:07:08 PM PST by oldvirginian (Its for the children and kick the can down the road. Two phrases that make my trigger finger twitch.)
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