exact point in space at H-hour. “ : am, ThiaBei tion was made good by the co- ordinated effort of the crew menbers responsible for flying and navigating the aircraft. An orbital flight pattern was flown by the crew several times just prior to H-hour, so timing adjustments could be made to take into account the existing winds over shot point. Thus the crew refined its timing to such an extent that they arrived at their assigned position with an error not in excess of plus or minus three seconds. On all CASTLE shots the B~36 and B-47 effects aircraft were positioned between 35,000 and 50,000 feet horizontal range and between 30,000 and 45,000 feet altitude. Their proximity to the detonation point necessitated pro- tection against the heat and intense light. To increase reflectivity and : prevent scorching of the metal, the B-3@ was painted white on the underFor crew protection, asbestos curtains were placed over all the side. windows and ports to intercept the thermal radiation. The aircraft re- ceived superficial damage from the blast on each of the shots, but not enough to endanger its flying characteristics or capabilities. £ ———t DELETED The B-47 rrom its effects aircraft was 2985 feet planned location, possibly explaining why it received no superficial damage from the BRAVO yield. The data gained from these two aircraft was to be used to design better aircraft and to develop techniques for safe delivery of nuclear weapons with aircraft now current. AFWILPHC bo’?