Slashdot Mirror
1935 Meccano "Dam Busters" Computer Restored
rob1959 writes "A 1935 analog computer, built at Cambridge University and used to help plan the Dam Busters attacks on the Ruhr hydro dams in World War II, has been restored and put on display at Auckland's Museum of Transport and Technology. The computer came to NZ around 1950 and was used, ironically, to build hydro dams there — and to calculate rabbit population numbers."
I read the book years ago. In it the designers built a tank and used marbles as scale model bombs. It doesn't say anything about a computer used in the design. I wonder if information about the computer was left out for reasons of security.
http://michaelsmith.id.au
Historically the attack had a significant purpose, although generally lost on many. Quoting the minor footnote in the same wikipedia article:
... The Dams Raid enabled Churchill, in negotiations with the leaders of these new allies, to point to an effective strike against the hitherto apparently invincible German state so that he was taken more seriously as an ally than might otherwise have been the case. This was relevant vis-à-vis Stalin but also in the USA. Although Churchill had the sympathetic ear of Roosevelt, many of the US military staff had until then been less persuaded of the value of British experience and capabilities.[6]"
"An important reason for planning the raid was to persuade Stalin that Britain was capable of being an effective ally
Yes, a very sad loss. I was not sure anyone (surprisingly) on Slashdot picked this up.
I was privileged to attend his final talk the week before, given at Edinburgh. The video is now actually available here (for a while): http://www.inf.ed.ac.uk/events/jamboree/2007/
This was absolutely fascinating, and I listened spellbound for an hour and a half. Do not be misled by the title as it covered much of the early development of AI in Britain (not just at Edinburgh). Analogous with the actual topic of this story, it details another, very early "physical computer" MENACE - constructed of matchboxes and beads.
A fuller obituary (that goes way beyond his short involvement with Turing) is here: http://www.timesonline.co.uk/tol/comment/obituarie s/article2061886.ece
Truly a great pioneer and inspiration for us modern researchers in AI.
However, some 20,000 workers were diverted for months from building the Atlantic sea wall defences to repair the dams, which had far-reaching effects on D-Day.
William
Sphinx of black quartz, judge my vow.
Tactically, the dam raid did not cause the catastrophic industrial disruption which had been hoped for, and the lack of a follow-up raid to suppress repairs meant that the Germans could recover. But strategically, Wikki has this to say:
" The strategic view
The Dams Raid was, like many British air raids, undertaken with a view to the need to keep drawing German defensive effort back into Germany and away from actual and potential theatres of ground war, a policy which culminated in the Berlin raids of the winter of 1943-44. In May 1943 this meant keeping the Luftwaffe and anti-aircraft defence forces' effort away from the Soviet Union; in early 1944, it meant clearing the way for the aerial side of the forthcoming Operation Overlord.
By far the greatest and most unexpected effect was on German food production. The Ruhr valley below the dams was a major source of vital food for Germany, and large areas of arable land were rendered unusable and huge numbers of farm animals were killed. This had an immediate negative effect on German morale. In addition, the pictures of the broken dams proved to be a morale boost to the Allies, especially to the British, still suffering under German bombing."
And of course, a major effect was to pursuade Harris to support Barnes Wallis's greatest contribution, the Tallboy and Grand Slam supersonic precision earth penetrators. These stopped the V2 and the V3, and sunk the Tirpitz, and well as the U-Boat pens at St Nazaire. The Americans wished they had something like them, and are only now developing something similar for use against Iran.