WWII Japanese Balloons and Attached Devices

Beginning in 1944 trade winds carried weaponized Japanese balloons to the North America. This technical report issued to Allied forces shows ballon types their equipment and locates all discovered landings across East Asia the U.S Canada and Mexico. It calculates lift power loads and inferred performance. Commonly remembered as incendiary a wider variety of payloads were indicated: personnel explosives germs radiosondes and anti aircraft gear. Memos describe recovered balloons and the poor results from extensive radar detection testing. The report closes with modeling flights times loads and distances. This is a high quality facsimile of the typescript 115-page report including 28 photos and 3 drawings. It offers a fascinating look at unmanned aerial vehciles of WWII.