H lifting beam progetto

Military planners, who were unable to develop an intercontinental missile, instead came up with the idea of balloon bombs.The first balloons were launched in late 1944, landing in the U. The Japanese managed to build three of these behemoths during the war, vessels which hold the record as the largest conventionally powered submarines ever built.The intention was to have the devices explode over the forested regions of the Pacific Northwest and start large forest fires that would divert precious U. They were 33 feet in diameter and could lift approximately 1,000 pounds, but the deadly portion of their cargo was a 33-lb anti-personnel fragmentation bomb, attached to a 64–foot long fuse that was intended to burn for 82 minutes before detonating.They were housed in a watertight, pressure-resistant hangar.Shōwa Japan, knowing it was up against a superior enemy, both in terms of industrial strength and technological sophistication, accelerated its efforts to keep pace.The Japanese developed dozens, if not hundreds, of highly conceptual weapons during the war, including some that actually made it to the battlefield. As the Nazis were lobbing V2 rockets over the English Channel, the Japanese were fashioning their own "vengeance weapons" as well.The Japanese programmed the balloons to release hydrogen if they ascended to over 38,000 feet and to drop pairs of sand filled ballast bags if the balloon dropped below 30,000 feet, using an onboard altimeter.In this way the balloons would rise in the daylight heat each day of the crossing and fall each evening, till their ballast bags were depleted, at which time the balloon and its deadly contents would descend upon whatever lay beneath it. By the following day they landed as far away as Thermopolis, Wyoming. In all, some 285 confirmed landings and/or sightings were made.Though allied with the Entente during the First World War, Imperial Japan shifted its allegiances after being snubbed at Versailles.Its actions would eventually bring it into conflict with the United States, a development that proved to be its undoing.And in fact, they assumed that banned weapons were particularly effective.To that end, the Japanese Imperial Army was equipped with advanced conventional weapons, specialized suicide attack weapons, and even weapons to conduct biological and chemical warfare.