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    "localId": "486498244",
    "label": "Report, OSI - 10-50, Central Intelligence Agency, Soviet Guidance and Control Development Particularly as Applied to Guided Missiles",
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    "title": "Report, OSI - 10-50, Central Intelligence Agency, Soviet Guidance and Control Development Particularly as Applied to Guided Missiles",
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        "President's Secretary's Files (Truman Administration)",
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{
    "seq": 36,
    "pageIndex": 0,
    "type": "photo",
    "url": "https://s3.us-east-1.amazonaws.com/NARAprodstorage/lz/presidential-libraries/truman/hst-psf/602196/875492/875492-02-036.tif",
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    "ocrText": "TOP SECRET\n(4) Television\nSprottee\nData on many of these devices (all of which are believed to be in the hands of\nthe Soviets) are available, and should serve as the basis of a future study.\nThe acoustical homing heads were considered by the Germans to be of least\npromise for use with antiaircraft missiles primarily because of their slow response\ncaused by the slow speed of propagation and missile-noise interference.\nThe infrared homing heads were considered by the Germans to be superior\nto the acoustical type but were still limited in scope because of restrictions imposed by\nweather. The Emden and Hamburg were passive homing types, the latter being an im-\nprovement over the former with a two-degree scan. These were in the final stage of\ndevelopment in 1945, although neither had been flight-tested. The Madrid was an im-\nproved Hamburg with a 1.5-degree scan while Karussell was a still more advanced\ndesign. Neither Hamburg nor Madrid had been developed beyond the laboratory stage.\nThe most significant homing-head development, as well as the most difficult,\nwas the electrical-type homing heads. The most advanced project was the Maximilian\n(Max) of which there were two types, the Max-P, a passive-type head, and the Max-A,\nan active-type head. Both functioned on the C-W Doppler principle. Both equipments\nwere nearing the completion of the laboratory stage; approximately 100 Max-P sets were\nbeing assembled and several Max-A sets were known to have been assembled for labora-\ntory and flight tests. Neither equipment had been flight-tested and final development was\nfar from being finished. Other electrical homing heads were less developed than either\nthe Max-P or Max-A.\ne. Proximity Fuzes\nStrictly speaking, proximity fuzes do not form part of a guidance and control\nsystem. In the case of antiaircraft missiles, however, the probability that a direct hit\nwill be made on the target is very small, and a suitable proximity fuzing system for\ndetonating the missile warhead near the target is required. Consequently, we shall men-\ntion very briefly the status of German development of these fuzes at the end of the War.\nConsiderable effort had been expended in Germany on these projects, but, in 1945,\nno completely satisfactory fuze had been developed for use in antiaircraft missiles.\nThe most advanced fuze design was known as the Kakadu. This was an electromag-\nnetic fuze which operated on the Doppler principle and possessed a 12 to 20 meter range.\nThis fuze had been selected for production and an order for 3,000 had been placed. By\n1945, the Kakadu had not been successfully tested. The Kakadu fuze was a very complex\nmechanism which was difficult to produce and likely to give trouble in service. Conse-\nquently, a simplified and more promising fuze known as the Fox was being developed from\nthe original Kakadu design. Ten or twelve flights for testing the Fox are reported to\nhave been made, but the degree of success is unknown. The Fox fuze was scheduled for\nproduction in 1945 but the commencement of the initial order of 1,000 had not been\neffected.\nOther fuzes under advanced development were the Marabu, a frequency-modulated\nradar-operated fuze nearing completion in 1945; the Kuhglocke, an electrostatic fuze\nwhich had been tested with poor results; and the Kugelblitz, a fuze operating on the\nsame principle as Fox, which was being developed for Rheintochter. The Kugelblitz\nwas believed to be one of the most successful fuzes under development in Germany though\nnot as advanced as the Kakadu or the Fox. An initial development order for 200 units\nhad been placed.\nTRUMAN\nNARA\n27\nTOP SECRET"
}