PROGRESS REPORT NO. 5 i March 1958 - 31 March 1958 Subcontract Ne, 10S, Apnondixes B, C, and B This informal monthly pregress report is the fifth of a series submitted in partial fulf3liment of Subcontract No. 108, The information is regarded as preliminary and subject to further verification and analysis. Toe two remote contre? firing panels, 3 master control boxes, 5 Launcher control boxes, and 27 sets of ASP fins were shipped to PPG during March, Second~stage hardware, the remaining ccuplings end breekaways, and 20 sets of ASP fins will be completed and shipped before 21 May 1953. Twenty-four No, 427 motors vill be shipped by 23 April, and the remaining 16 by 2) Mar. Deliveries to PPG will be complete by 21 May, If. Electronics All electronic comoonents which remain to be shipped are in production and are on schedule. tit, Wind Tunnel Tests The operational characteristics of 4 filter-diffuser assembly using UCRL's new, reinforced filter were tested in the wind tunnel at Ames Acronautical Laboratory, Moffett Field, California, on 13 March 1958, Visual observations indicate that the results will be quite similar to the results obtained in the test conducted on 30 January. The data are expected to arrive from Ames by 8 April, and analysis will be begun at that time. I¥. Field Tests A tuo-stage vehicle, using a No. 427 Rocket Motor as a second stage, was fired at White Sands Proving Grounds on 19 March. The rocket was fired at