a. . Ser ° a Project -5«3 - In-Flight Partici phtan of A B-66B - R. W. Bachman OBJECTIVE The primary objective of this test was to measure the thermal effects of a large yield nuclear airburst on a B-66B aircraft in flight. INSTRUMENTATION Instrumentation of the B-66 for CHEROKEE) con- sisted of 60 thermocouples and 73 strain gagewet 7 stations on the left wing, 9 thermocouples and 10 strain gages at 2 stations on the right wing, 34 thermocouples and 18 strain gages at 7 stations on the left stabilizer, and 9 thermocouples and 12 strain gages at 3 stations on ss the right stabilizer, plus 63 channels of correlating information, AIRCRAFT POSITION IN SPACE Because of discrepancy in count-down, the B-66 flew an abort pattern which, at H-hour, positioned the aircraft 46 degrees from tail-on and right-side to actual GZ on a heading of 251 degrees with a true air speed of 495 knots. The absolute altitude and horizontal range at H-hour were 36,000 feet and 52,640 feet respectively. The absolute altitude hori- zontal range and heading at shock arrival (H 4 125 seconds) were 36,000 feet, 143,000 and 251 degrees respectively. Tn - 55 tle Dfte baw a rf Ae