—_—~ 4 rroject 1.3 - SHOCK PHOTOGRAPHY ~ J. Fetes CeJECPLVES The objectives for this shot were as follows: 1. To study the mechanical effects of a water surface on shock 2. To study the thermal effects, if any, resulting from the heating of air ntar the ground surface on shock transmission. 3. To determine peak shock overpressure as a function of distance both at the surface (water) and above ground sero, CN SYRUENTATION 1 y phy and diiach chock photography, The vochols . sve Plivd from a station on the reef, 3,000 Toot Tw of + oind sero, C= .sres were located on the south end of YVONNE cnd at the The rocket instrumentation was successful and three filzs of good 1 b2 usable for the determination of peak shock over~ x Ss i MS ry qu uy ow quality were obtained fraa the photo station on the south cad of TVONLE, srissure (obgzctive 3) and for a study of the mechanical effects of a ber surface on shock propagation (objective 1). As the result of a power failure on the Mack tower, no films were obtained. Consequently, a study of thermal effects on this shot is impossible (objective 2). copren!d Of LANL RG ~ 23 =