that only ote ai-bLo trajscter was catained on Teak. seven Mea ONeATTIN - were floam on Orange; an eishta wait was rescs Bee could Bot be lists RE Cause of Srife in the transaitter frequency. Six of these Deacca-Arrnws tlow meraslly; the seccood stage failed co rigaite on Cae sevent rocad. Ustertun- ately, this round, which was the only failure aang the 55 Deacon-arrns flown from Joonston, was one of the tev rounmls Seing tracked by MDOT tor Orange. Im susmary, it appears that (1) the Deacon-Arrow units flew oraails, but the noaginal altitude performance was abour & percent below presdor estimates, (2) the Viper-Arrow system was unsatisfactory Because of an aeroelastic weakness in the desiso, and (3) it is possible to anke a satisfactory postshoet esticate cf a ziven trajectory by using only che cotal time of flighe and the launch conditions. REFERENCES 1. Design and Planning Status of Program Dourknod, 5C-4103(M), Santia 2. Ortega, J. M., An I8M-704 Prograa for Calculating Theoretical Rocket Corporation, Albuquerque, New Mexico, June 15, 1957. Trajectories, SCTM 117-56/51), Sandia Corporation, Albuquerque, New Mexico, May 6, 1958. 3. Force, C. T., and Walker, W. E., Design Characteristics and Perforaince of Sandia's Deacon-Arrow Chaif-Rocket Svystes, SC~+229(TR), Sandia Corpor- ation, Albuquerque, New Mexico, November 1950. \. Force, C. T., 5. Force, C. T., Sandia*s D-A and V-A Sounding Rockets, Astronautics, July 1961. O. Range Safety Considerations of the Deacon-Arrow Sounling Rocket, SC-4513(RR), Sandia Corporation, Jamary 1961. Force, C. T., The Fina) Trajectory Analysis of the Hi-Lo Rocket Progras, SC-4677(TR), Sandia Corporation, to be published.