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HELICOPTER ATOiaC TEST UNIT CAKP DESERT ROCK ( Operation UPSHOT, SHOT NO. 10 I LAPS: AKS SERIES 7796 NEVADA i: 50,000 Tippipah Spring 2758 II RG 326 US ATOMIC ENERGY a. To develop and recommend tactics and techniques for employment of helicopters in conjunction with atomic "fire support. a. 14KT detonated in the Frenchman’s Flat area on or about be detonated about 500 feet above the terrain. OPERATIONS AUP REMARKS Camp Desert Rock for the forward area. approximately 9,500 yards from ground zero. All helicopters will be positioned in line with port side exposed to the blast. for warmup. Helicopter A establish radio of the shock wave. ^ CONFIRMED TO BE UNCUASSIFfED BY AUTHORITY OR DOE^OC
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TIME OPERATIONS AND REMARKS Helicopters A and B come to a hover about 10 feet above the deck, port side exposed to blast, and maintain this position Helicopter C will remain in positioh on the deck with rotors turning until after passage of the shock wave. H Hour ' After blast intensity has decreased co-pilots will remove protection goggles and be prepared to assurae control of the H / 10 Seconds Crew chiefs in helicopters A and C will start pressure guages to chedk over pressure at the helicopter positions. H / 24 Seconds (approx) Shock wave arrives vicinity of all land at the upwind edge of the dust cloud whehCradiation intensity does not exceed Helicopter C proceed to and skirt the upwind portions of the dust column at an altitude not exceeding 400 feet above the terrain and record early off as soon as possible to return directly to the airstrip at Camp Desert Rock. nated areas. Monitors disembark and make early readings of radiation levels not exceeding 10 r/hr. Monitors will make two (2) trips from the helicopter landing area toward ground zero to a position whetea radiation j^nading of 10 r/hr is received. The trip will be to determine earlm^Vaiol^on decay.
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Helicopteiv C record radiation levels around the dust column then return to Camp Desert Rock. Helicopters A,B, and G will act as rescue helicopters for each other and _ will not enter areas .where radiation in the air is greater than 10 r/hr. and B. A and B return to airstrip at Camp Desert Rock And land. b. (11 All Helicopters will be manned by a pilot and co-pilot. All co-pilots will wear 4.2 density goggles at the time of the blast. (2) Helicopters will not fly into areas where radiation intensity is greater than 10 r/hr. Helicopters will not land in areas where radiation intensity i£ greater than 50 mr/hr. Rad Safe monitors will be embarked aboard helicopters A,B, and C. (3) Helicopter windows, doors, and other’ closures will be open to allow equalization of pressure. • (4) Personnel in helicopters A and B will wear protective (5) Hi 23-200 gives the following radii for the given (a) Radius of 2psi: 2360 yards based on 14 KT at 500 feet. Estimated radius of J psi is four times the radius of 2 psi; i.e. 9,500 yards. (b) Radius of 2 cal/cm2: 4500 yards based on 14 . KT and infinite visibility. (c) Radius of 3r prompt gamma: 2350 yards based on a 14 KT and relative air density of 0.8. V a. Radiac sets, AK/PDR T-1B will be carried aboard Helicopters
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b. Helicopter call signs will be Sandblower ABLE, BAKER, c. GEARBGZ will provide the following time signalst. 6. It is requested that rehearsal be conducted 21 ICay 1953, with a simulated shot time of 1000.