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Topic: Bouncing bomb

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	bouncing bomb@Everything2.com
		The bouncing bomb (also named "Highball") was invented by Barnes Wallis during WWII, to destroy German dams by dropping a bomb at low altitude, and skipping it across the water of the dam like stones skip on a pond.
		The bomb bays of the Lancaster had been removed, and a hydraulic motor and belt drive generated a 500rpm backspin on the bomb.
		The bomb contained 3 hydrostatic pistols, to measure the pressure of the water as the bomb sank.
	everything2.com /index.pl?node_id=1318381&lastnode_id=0 (1319 words)

	1001 Crash - Bouncing Bombs - History, pictures and videos
		Bouncing Bomb - Page 1 - EN The bouncing bombs are those cylindrical bombs designed by the British during the Second World War to destroy enemy dams and ships.
		However a bomb placed right by the dam would be effective because the water would act as a natural tamping medium, directing the explosion onto the dam, instead of protecting it, and greatly reducing the explosive power required.
		The bomb is dropped from a specially modified aircraft over water, bounced over the water (avoiding the torpedo nets) until it reaches the target, and sink and explode under water next to the target, causing heavy damages.
	www.1001crash.com /index-page-bomb-lg-2-numpage-1.html (388 words)

	Operation Downwood
		His initial idea was for a 10 ton bomb to be dropped from 40,000 feet, research showed that without a direct hit a bomb would need to be uncarriably vast to breach a dam.
		A drum shaped bomb, spinning rapidly and dropped from a sufficiently low altitude at high speed would, for a short distance, skip over the surface of the water in a series of bounces before halting and sinking.
		The substantial bomb and its unusual shape meant that the bomb doors were removed and the bomb itself hung, in part, below the body of the aircraft.
	www.ebroadcast.com.au /lookup/encyclopedia/da/Dambusters.html (1428 words)

	Intersting Engineering Event
		Wallis also discovered that if the bomb detonated at a ceratin depth, approximately one third of the way down the dam, the force of the water pushing on that point would be enough to break a wide section open.
		In order to be accurate, Wallis’s bouncing bomb needed to be dropped from a height of 60 ft, 425 yards away from the dam face, moving at a speed of 240 miles per hour.
		For that, the bouncing bomb became a simple, yet elegant technological feat that integrated the knowledge of physics, chemistry, math and communications all in one.of the page or the top of a new page.
	www.pitt.edu /~mdg16/paper.html (3408 words)

	Britain.tv Wikipedia - Bomb
		Bombs are first and foremost weapons; the term "bomb"?title=is not usually applied to explosive devices used for civilian purposes, such as construction or mining, although the people using the devices may sometimes refer to them as bombs.
		The military mostly calls airdropped, unpowered explosive weapons "bombs,"?title=and such bombs are normally used by air forces and naval aviation.
		Variations on this are the drag-producing fins of the "Snakeye"?title=version of the Mark 81 bomb and the ballute devices that can be fitted to a variety of air-dropped bombs.
	www.britain.tv /wikipedia.php?title=Bomb (1140 words)

	Spartanburg SC \| GoUpstate.com \| Spartanburg Herald-Journal
		However, dams were immune to conventional attack because of their size; an immense amount of explosive would be required to breach them because then-current bomb aiming techniques would not allow the placing of a bomb with the required accuracy to avoid the cushioning effect of the water.
		Barnes Wallis observed that a larger version of the 'bouncing' anti-ship weapon would skip over the anti-torpedo nets and sink in contact with the dam, where the water would act as a natural tamping medium, directing the explosion on to the dam, instead of protecting it, and greatly reducing the explosive power required.
		However, to achieve this effect the bomb had to be released from a very low height (18 m or 60 ft), speed (386-402 km/h or 240-250 mph), and distance (365-457 m or 400-500 yards) from the target.
	www.goupstate.com /apps/pbcs.dll/section?category=NEWS&template=wiki&text=bouncing_bomb (1111 words)

	Dambusters
		Although German physicists in the early 1900?s had identified and quantified the physics of bouncing solid objects off water it was not until Barnes Wallis turned his formidable intellect to the problem that it was proved back spin greatly extended the range of this ricocheting projectiles.
		He explained that an uprated bomb of 10,000lbs would be needed for the operation and a specially modified Lancaster would be needed to carry it.
		Avro were given the task of modifying the bomb bays of the Lancasters, strengthening the fuselage and building and fitting the frame mechanism to hold the bomb in place.
	www.dambusters.org.uk /bouncing_bomb.htm (1172 words)

	The Bouncing Bomb (Site not responding. Last check: )
		It contained 3 hydrostatic pistols, which measured the hydrostatic pressure of the water as the bomb sank, until it was equal to the pressure corresponding to 30 feet depth.
		Before being released from specially modified aircraft, the bombs were held by v-shaped arms in the plane and rotated to the speed of 500 rpm by a hydraulic motor and belt drive.
		The bomb was also required to either be at the right height or at a fast enough speed to jump over or break through the defensive netting employed by the Germans.
	www.chm.bris.ac.uk /webprojects2001/moorcraft/The%20Bouncing%20Bomb.htm (323 words)

	The Dambusters: Inhoud / Barnes Wallis and the Bouncing Bomb
		His initial idea was for a 10-ton bomb to be dropped from 40,000 feet (12,200 m).
		However, research showed that a bomb sufficient to breach a dam without a direct hit would be too heavy for any available bomber to carry.
		Bombing from 60 feet (18 m) at 240 mph (390 km/h), at a very precise distance from the target, required expert crews, intensive night and low-altitude flying training, and the solutions to two technical problems.
	dambusters.be /web/content.php?content.77 (623 words)

	Bouncing Bomb
		In February, 1943 Barnes Wallis was told to prepare these bouncing bombs for an attack on the Mohne and Eder dams in the Ruhr.
		The cylindrical bombs, that spun at 500 rpm, were dropped by Guy Gibson and the 617 Squadron at a height of 60 feet and at a speed of 240 miles an hour.
		The RAF could not sustain such high losses and the bomb was rarely used again during the war.
	www.spartacus.schoolnet.co.uk /2WWbouncing.htm (241 words)

	Bouncing bomb - Definition, explanation
		This version of the bomb, which was sphere-shaped and dimpled like a golf-ball, was codenamed Highball and was developed to be dropped from a modified de Havilland Mosquito that could carry two of the weapons.
		However a bomb placed right by the dam would be effective because the water would direct the explosion onto the dam, instead of protecting it, and greatly reduce the explosive power required.
		After the raid the Germans discovered an Upkeep bomb that had failed to explode lying in some woods and subsequently an 850 pound version of the bouncing bomb was also attempted by the Luftwaffe.
	www.calsky.com /lexikon/en/txt/b/bo/bouncing_bomb.php (688 words)

	SECRETS OF THE DEAD . Bombing Nazi Dams \| PBS
		Each Lancaster in Squadron 617 was outfitted with a strange new weapon -- a bouncing bomb that, when dropped precisely on target, would skip across the water and slam into the wall of an enemy dam.
		The next plane fell prey to German anti-aircraft fire, but the bombs of the fourth and fifth Lancasters scored hits, smashing apart the middle of the dam.
		Although eight of the nineteen bombing crews did not return, the mission was considered a success.
	www.pbs.org /wnet/secrets/case_nazidams/index.html (807 words)

	Big & Bouncy - the special weapons of Sir Barnes Wallis
		Colloquially referred to as "bombs", Upkeep and Highball were officially described as "mines" (as they were to detonate in water), and technically were "depth charges" (as they were to explode at a set depth).
		Lack of ground penetration was a potential problem, as the bomb was originally intended to be dropped from 40,000ft, but the specially modified Lancasters could only carry it up to a maximum of 25,000ft; however, in practice this was found not to be a serious problem.
		Most interestingly, the bomb was used against dams (one of the principal targets for the big bombs from their inception, of course).
	www.computing.dundee.ac.uk /staff/irmurray/bigbounc.asp (4229 words)

	Bouncing Bomb
		It was hard to do because the bomb had to be underwater right next to the back of the dam.
		What he finally came up with was a spherical 500-pound bomb that was dropped by a bomber when it was exactly sixty feet above the water.
		The bombardier had a stick shaped like a Y. On the base of the Y was a hole to look through, and on each end of the forked part was an upright post.
	www.invisiblecows.com /BouncingBomb.html (242 words)

	Read This: Mathematics with Love
		The Courtship Correspondence of Barnes Wallis, Inventor of the Bouncing Bomb
		I was a little frustrated to find no explanation at all of the "bouncing bomb" business from the subtitle, and no account of what happened to Barnes' airships.
		Publication Data: Mathematics with Love: The Courtship Correspondence of Barnes Wallis, Inventor of the Bouncing Bomb, by Mary Stopes-Roe.
	www.maa.org /reviews/mathwithlove.html (1107 words)

	The National Archives \| Exhibitions & Treasures \| Dambusters
		In the days before computer-aided precision bombing, Wallis bouncing bomb would maximise the chances of actually hitting a dam and destroying it.
		It would then bounce across the water to the target and on contact with the dam, crawl down the under-water face and explode.
		Impressed with the concept, Air Chief Marshal Sir Charles Portal, Chief of the Air Staff, ordered Barnes Wallis to prepare the bouncing bombs for an attack on the Möhne, Eder and Sorpe dams in the Ruhr for May 1943.
	www.nationalarchives.gov.uk /dambusters/idea.htm (270 words)

	Bouncing Bomb Cartoons
		You are looking at the "bouncing bomb" cartoon page from the CartoonStock directory.
		Bouncing Bomb cartoon 1 - catalog reference ndi0603
		Copyright in this image is owned by the original artist, rights to reproduce or use the image may be obtained from www.CartoonStock.com.
	www.cartoonstock.com /directory/b/bouncing_bomb.asp (209 words)

	Dambusters Remembered At RAF Museum, Hendon - London City Guide news
		Descending to within a few feet of the water the Lancaster bombers unleashed a bouncing bomb that breached the dam walls.
		a bouncing bomb slung beneath a Lancaster of 617 Squadron.
		The cylindrical bombs developed by Barnes Wallis had to be dropped from 60 feet to skip into the dam face before rolling down it to explode at a depth that triggered a pressure fuse.
	www.24hourmuseum.org.uk /london/news/ART16723.html?ixsid=An9RA7nuA4P (870 words)

	:::DA BOMB BIKE ::
		This is great opportunity for Da Bomb to show anybody that what Da Bomb had been up to.
		The 2007 of new ammunition from Da Bomb are ready to shock your eyes and take over this world.
		Rocket Bomb is top cross country frame, bring you to different level of racing, and experience.
	www.dabombbike.com /product_list.html (951 words)

	scottberkun.com » Blog Archive » Innovation history: the bouncing bomb (Site not responding. Last check: )
		One highlight of my research in innovation history is the story of Barnes Wallis and the bouncing bomb of WWII.
		Barnes developed a way to drop a bomb, on water, several hundred yards from the dam, and have the bomb, weighing several tons, bounce (that’s right) it’s way on the surface until it reached the dam wall.
		I watched it first on the PBS Special Secrets of the Dead, but you can watch parts of the Dangerous Missions series about the bomb on Google Video here.
	www.scottberkun.com /blog/2007/innovation-history-the-bouncing-bomb (346 words)

	TRIBUTE03.page
		The cylindrical bombs were first spun to a speed of 500rpm, and were dropped by the now famous 617 squadron at a height of 60 feet above the water of the dam, and at a speed of 240 mph.
		In using the Bouncing Bomb, the pilots of the 617 squadron had to fly very low and 7 of the 19 aircraft which took part in these raids were shot down by German anti aircraft guns.
		TAlthough the Bouncing Bomb worked, the RAF decided it could not sustain such heavy losses and the Bouncing Bomb was rarely used again during the war.
	www.geocities.com /pilot_profile/TRIBUTE03.html (468 words)

	Bouncing bomb - Wikipedia, the free encyclopedia
		The bomb could be released away from the ships; the bomb would skip over anti-torpedo defences, and when it struck would roll down the hull to below the waterline, where a battleship would be least protected.
		This version of the bomb, which was sphere-shaped and dimpled like a golf ball, was codenamed Highball and was developed to be dropped from a modified de Havilland Mosquito that could carry two of the weapons.
		After the raid the Germans discovered an Upkeep bomb that had failed to explode lying in some woods and subsequently a 385 kg (850 pound) version of the bouncing bomb was also attempted by the Luftwaffe.
	en.wikipedia.org /wiki/Bouncing_bomb (937 words)

	The Dambusters: content / the bouncing bomb (Site not responding. Last check: )
		The substantial bomb and its unusual shape meant that the bomb doors were removed and the bomb itself hung, in part, below the body of the aircraft.
		Bombing from 60 feet (18 m) at 240 mph (390 km/h), at a very precise distance from the target, required expert crews, intensive night and low-altitude flying training, and the solutions to two technical problems.
		The bombs were delivered to the squadron on 13 May, after the final tests on 29 April.
	www.warbirds.be /dambusters/plugins/content/content.php?content.43 (621 words)

	Mystery Behind Earthquake Bombs Tallboy Name Is Solved (from The Northern Echo) (Site not responding. Last check: )
		It was designed by bouncing bomb inventor Sir Barnes Wallis and an unused, but deactivated, bomb has gone on show at the Yorkshire Air Museum, at Elvington, near York.
		Even his memorabilia of the time, including reconnaissance photographs before and after the bouncing bomb raids, were returned on his retirement to avoid suspicions of theft.
		The 21ft Tallboy has gone on show in the museum's new bomb and missile exhibition alongside its successor, the even larger Grand Slam bomb, which is 26ft 6in, and a bouncing bomb.
	www.thisisthenortheast.co.uk /display.var.975924.0.mystery_behind_earthquake_bombs_tallboy_name_is_solved.php (387 words)

	GameSpy.com - Reviews: Zoo Tycoon (PC)
		Bomb power-ups will enable you to place more bombs on the board, by default each bomberman starts off with one bomb.
		Line bombs are a string of bombs, which as you can image, deliver some rather nasty damage.
		Sometimes the skull will slow your character down, or speed him up, disallow the setting of bombs, increase or decrease the fuse time, disorient the gamer by reversing the controls of their character, or my favorite, "diarrhea" which will cause you to set bombs uncontrollably.
	archive.gamespy.com /reviews/november01/bombermanonline/index2.shtm (570 words)

	Bouncing Bomb Diagram - 617 Squadron and the Dams Raid
		Bouncing Bomb Diagram - 617 Squadron and the Dams Raid
		The back-spin shown on the drawing both helped the bomb to bounce further and kept it in contact with the face of the dam whilst sinking.
		The different design of the Sorpe dam meant that the bomb had to be dropped on top of it rather than bouncing across the reservoir.
	www.rafmuseum.org.uk /london/exhibitions/dambusters/6a_dam_diagram.cfm (90 words)

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