Word: azimuthal
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Dates: during 1950-1959
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Stehling believes that the rocket must be launched in exactly the right direction, preferably 45° from the vertical. The balloon will carry an azimuth and delination mounting, probably a gyroscope, which will point the rocket eastward by "locking on to" the sun. After it is launched, it would require guidance only in the second stage. There are two possible ground-control methods: beaconed radar or moving intersecting radio beams. The third, satellite stage would be unguided and would carry only a 30-lb. payload of instruments or experimental animals. According to his calculations, it would reach 18,400 m.p.h...
...aircraft engineering jargon, rho is distance, theta is azimuth, i.e., compass bearing to the transmitting station...