![]() ![]() "During the Cuban Missile Crisis, the US intelligence community had monitored the construction of no less than 19 SA-2 SAM sites on the island and these provided the CIA, together with Oxcart planners, an ideal opportunity to determine the sensitivity of its associated radar receiver. The use of rubber bands or elastic reflector surfaces is to allow for the usual expansion of a rubber balloon as it attains great height with the resulting low atmospheric pressure." The points of the reflector surfaces are joined by rubber bands, as by spot vulcanization. ![]() A typical balloon will be about six (6) feet in diameter, although a such smaller or larger one may be used. The seal may be a separate piece as illustrated, or may include the intake port. I prefer to seal the balloon after the reflector unit is secured in position. The unit does not cut off the balloon into isolated sections and accordingly it may be filled with gas through a single port. The elasticity of the supports and/or the reflector unit itself provides for the usual expansion of the ascending balloon. The device being collapsible can be packed into small space. As will be understood, the balloon is made of electrically non-conducting material. With prior devices such readings could not be obtained because these heights were not attained by the balloon and unit or at least not while it remained in recording range. e., at elevations of from 30,000 to 40,000 yards, heretofore unobtainable, may be recorded by use of the present invention. In the former case, the weight of a rain-soaked or ladened reflector adds to the drag of separate units and in the latter case the protection to the reflector afforded by the balloon multiplies its life several times. "While the invention is of paramount importance in ascending balloon assemblies, it may be used in fixed installations such as can be used for navigation.
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