Journal of the Society of Motion Picture Engineers (1930-1949)

Record Details:

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438 COBB November missile axis and rate of spin may be determined from these motion picture observations with a high degree of accuracy. Orientation of the axis of a V-2 at an altitude of 20 miles has been determined with a probable error of 0.6 degree. Fig. 7 — 4.5-inch tracking telescope photograph of A-4 missile, at a distance of 8 miles, taken with a 20-foot focal length. Not reproduced portion of 35mm frame contains azimuth, elevation, and time records. These instruments already have shown their usefulness in the ballistic-measurements field and have pointed the direction in which future development should move. Studies of tracking systems, drive systems, control systems, recording methods, and problems of