CHAPTER 7 PROGRAM 9 ~- SUPPORTING MEASUREMENTS Title: Cloud Photography PerformingAgency: EG&G LML Project Officer: Lt. Col. Jack G. James, USAF 7.1.1 Objective To record photographi¢ally cloud formation phenomena in order to supply data which may be uséd in studying the high yield bomb delivery problem and the corfejation of fall-out studies in relation to cloud drift. Aerial and grotund-photography will be employed in order to determine the spatial dimensions and location of the atomic cloud as functions of time. The Accuracy of these determinations is expected to be approximately 10 per-éent from time zero until the cloud attains its maximm height and approximately 25 per cent thereafter. | 7.1.2 Epocedur a One RB-36 and three C-54 aircraft witPerform the aerial photography utilizing gyro stabilized cameras. Synchronized readings for clock timing, azimuth and camera tilt will beftecorded on each negative. The RB-36 aircraft will operate above 30,000 ft for approximately 10 min. after zero time. The C-54 aircraft will operate at altitudes of 10,000 to 14,000 ft depending on ocal-eloud cover and will continue photography operations until the cloud dissipates. In addition to the aerial photography, motion picture cameras will be operated from ground stations in order to recordithe initial phases of the cloud formation. These cameras will shoot 100°frames/ sec. for the first 15 sec. and then reduce to one frame/sec, 45 min.