1.1.3 Power comprising 28 volts d.c, at ten amps, and 110 volt. oO cycle a.c. at 5 amps should be available to operate relays, butterfly valves and sample radiation monitoring equipment which will be used with the filter unit, Suitable wiring to the filter unit will be required, 1.1.4 Depending upon the configuration of the aircraft used and clearances between the wing and the ground, the filter unit may be mounted either on the wingtips or on pylon position underneath the wings. Ordinarily it would be desirable for an aircraft to carry two filter units, 1.2 Gas Samples: 1.2.1 Snap-type Samples. 1.2.1.1 The polyethelene bag snap-type equipment will be required and should have a capacity of 15 to 100 cubic feet at the sampling altitude, The auxiliary power requirements should be negligible, but wiring will be required to carry power for the relay valves opening and closing the bag. 1.2.1.2 This equipment should be located in a space within the fuselage of the aircraft, An external air sampling probe leading to the sampling apparatus will be required, 1.2.2 Pressure-bottle Type: 1.2.2.1 It is anticipated that a pressure-bottle type of gas-sampling apparatus similar to that being developed for the F-8lG's will be required as an alternative to the bag type. The physical size and power requirements for this type of apparatus will be similar to those for the system being designed for the F-8)G, 1.2.2.2 This apparatus should be installed in suitable space within the fuselage of the aircraft and will require an external sampling probe. Desired Sampling Altitudes: 2.1 The desired sampling altitude will depend upon the yield of the detonation and the burst height but, 216 SWEH -2-003); / oP AFWL/HO