SECRET... == Seeeerennnraeennnaenn ner e Project 1.5 - Drag Characteristics of Various Shapes - Ralph Reisler - BRL We plan to: one, investigate the aero-dynamic drag characteristics under transient loading conditions of actual and’ idealized shapes; and two, we want to investigate the response of drag-type targets and continue the statistical evaluation studies on military vehicles. The actual shapes to be used will be standard full- scale wide-flanged "I" beams 10' long, and standard angle iron sections 6' long. The idealized shapes will be 3" and 10" spheres. These items will be exposed at the 3' level on Cherokee. Two of the "I" beams and angle iron stations will be on two planned man-made islands of Project 3.1, at a pressure of 8 = 6 psi. Two 3" spheres and one 10" sphere will be included with the "I" beam and angle iron located adjacent to the Island Dog Station of Project 3.1 = at a pressure of 3.5 psi. Also, a complete drag station will be located on Island Able in the 20-25 psi region. Under present plans, 50 channels of information will be obtained. Record= ing will be done by the BRL Structures Instrumentation Project 3.10. To carry out the second objective, jeeps will be used as response gauges and will be placed adjacent to the basic medium stations. Damage evaluations will be made on all vehicles exposed. Participation here will be on Zuni and Lacrosse with a moximum of six stations being established for each, covering a pressure range of from 5 15 psi. We will have s total of seven men in the field - four civilians and three military. Project 1.6 - Drag Structures = Joseph Petes - NOL This project is very similar to 1.5 of BRL with drag measurements being made on various targets. The primary difference is 1.€ measures drag loading on model targets. On REDWING we plan to continue the work started on TEAPOT. The ultimate objective is to be able to predict on actual targets under specific field conditions, drag loading, on the basis of laboratory wind tunnel and shock tube tests. Therefore, on REDWING most of our models will be simple geometric forms in order to simplify the problem of comparison with previously conducted wind tunnel and shock tube tests; and we will also have some models which will represent actual targets such as bridge members, and we hope to be able to instrument some models which will represent scaled models of structures used on previous operations. The models which we contemplate using will be spheres which we had on TEAPOT, three 10" spheres essentially, mounted on stings. We hope to put out infinite length cylinders, circular and rectangular cross sections, cubes, and some scaled versions of previously used full scale structures. We plan to participate on shot Erie, which will give us two conditions which we would like to investigate, one, a clean Mach region, where we plan to put our gauge stations, approximately 10 models in about five psi static level. These measurements will give us direct correllation of such factors as drag coefficients, dynamic pressures, and drag forces, with wind tunnel and shock tube tests. We plan to put 10 models in a precursor which we hope to obtain on Erie. The instrumentation consists of force gauges which will measure force in three logarithmal components. The recording ~- transmission system js FM and the recording will be on magnetic tapes. The ‘construction requirements i were submitted last week to DWET, and I understand there are no existing structures