a 2-17 Effects input and structural response information of two FuJ=4 aircraft was measured. ‘The information obtained was concentrated in inputs and effe-t, from higher yields in order to correlate with data obtained from the lover yields of Plumbbob and confirm the Class D delivery capability of the eircrai+ In general, excellent correletion of blast response data was obtained, vei -fying the dynamic analysis used for predicting structural responses, It tas concluded that response data had been obtained over a sufficiently wice rouge of yields and incidence angles to permit subsequent definition of the Clacs ~~ delivery capability of the Fu-4B aircraft. 2.1.5 TaST OF S2RVICI ECUIPFLSNT AND hATSRVALS This prcegram, consisting of five projects had a wide range of project’ station locations: Wake Island and Eniwetok, Eikini, Kwajalein, Kusaic,. ° Wotho, and Rorgelap atolls. One project to study the wave form of electromagnetic pulse from a muclear detonation, used two sites: Wotho, 240 miles from Eniwetok, Kusaie, 420 miles from Eniwetok, and The objective was to make broad-band measure.- ments from 0 to 10 Mc at ranges up to 460 miles. expected to be radically new. The measurements were not Although improvements in equipment were in- corporated, the pimary conecrn of this project wes to increase the catalog- ing of wave forms. ° The data, which is in good agreeneit with thet obtained during Operation Redwing, indiccles that device yield and range and the presence of 2 second stage can be determined from wave-form parameters. Another project with stations ct ‘ishi Island and Kusaie studied iono=- spheric effects of large~yield surface detonations,. Inagreement with reswts of Operation Redwing Project 6.3, the energy responsible for the first disturbance in the ionosphere above Kusaie was propegated with a mean volocity of 20 km/min, Also corroborating previous results, the second disturbance FOPED nnn os PAGE 35 Ge