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Defense Technical Information Archive
Dec 4, 2019 Defense Technical Information Center
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An advanced re-entry systems heat transfer handbook for hypersonic flight has been developed using aerothermodynamic prediction methods developed during the X-20A (Dyna Soar) Program. It contains (1) design procedures for computing aerodynamic heating rates to re-entry vehicle configurational elements, (2) discussion on differences between aerodynamic heat transfer and pressure distribution observed in present day wind tunnels and those which would occur in actual free flight, (3) wind tunnel...
Topics: DTIC Archive, Thomas, Alfred C, BOEING CO SEATTLE WA, *REENTRY VEHICLES, *HYPERSONIC FLIGHT, *HEAT...
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A limited engineering flight test was conducted to provide sufficient engineering data for a safety-of-flight release for the UH-1B helicopter equipped with the XM-47 antipersonnel mine dispensing subsystem. An additional objective was to provide sufficient performance and stability and control data to update the operator's manual data to be used for UH-1B helicopters equipped with the XM-47 subsystem. Testing consisted of 42 productive flight hours. When the XM-47 mine dispensing subsystem was...
Topics: DTIC Archive, Reif, Manfred, ARMY AVIATION SYSTEMS TEST ACTIVITY EDWARDS AFB CA, *HELICOPTERS,...
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The Personnel Command and Adjutant General Operations, 1970, is the Personnel and Administrative Services Agency's derivative study for CSSG study 63-6, TASTA-70. Personnel Command which provides proposed manning tables and equipment lists for Adjutant General and related personnel/administrative general support functions.
Topics: DTIC Archive, ARMY COMBAT DEVELOPMENTS COMMAND PERSONNEL AND ADMINISTRATIVE SERVICES AGENCY FORT...
The Personnel Command and Adjutant General Operations, 1970, is the Personnel and Administrative Services Agency's derivative study for CSSG study 63-6, TASTA-70. Adjutant General Functional Support to FASCOM which provides proposed manning tables and equipment lists for Adjutant General direct support functions.
Topics: DTIC Archive, ARMY COMBAT DEVELOPMENTS COMMAND PERSONNEL AND ADMINISTRATIVE SERVICES AGENCY FORT...
Defense Technical Information Archive
Dec 4, 2019 Defense Technical Information Center
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A program to determine the phenomenological oxidation behavior of five commercial nickel-base alloys (IN-100, SM-200, Inco 713C, Rene 41, and U- 700) and one experimental alloy (Rene Y) is described to assure the intelligent application of these alloys and aid in the development of alloys with improved surface stability. The oxidation characteristics were established as a function of alloy composition, surface preparation, and environmental variables such as time (5 min to 1000 hrs),...
Topics: DTIC Archive, Wasielewski, Gerald E, GENERAL ELECTRIC CO CINCINNATI OH MATERIALS DEVELOPMENT LAB...
Defense Technical Information Archive
Dec 4, 2019 Defense Technical Information Center
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The present research was undertaken as part of a broad program to investigate the potential utility of polyfluoroaromatic compounds as thermally or oxidatively resistant non-metallic materials. Nucleophilic substitution reactions of polyfluoroanilines with fluoroaromatics led to a variety of polyfluorodiphenylamines which are structurally related to known antioxidants. These amines were further converted into diamines and diacids. Several model compounds were prepared for thermal stability...
Topics: DTIC Archive, Baum, George, AIR FORCE MATERIALS LAB WRIGHT-PATTERSON AFB OH, *THERMAL STABILITY,...
Defense Technical Information Archive
Dec 4, 2019 Defense Technical Information Center
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A preliminary design study was conducted on an unmanned HI-HICAT (high-High Altitude Critical Atmospheric Turbulence) vehicle and instrumentation system to measure turbulence at altitudes from 70,000 to 200,000 feet. The vehicle configuration selected as optimum for this extreme range of altitudes is a parawing. For the study, emphasis was placed on designing a system for the middle portion of the altitude band from 100,000 to 150,000 feet. In this band a lifting body configuration is...
Topics: DTIC Archive, Conner, Fox, LOCKHEED-CALIFORNIA CO BURBANK, *CLEAR AIR TURBULENCE, PARAWINGS, DATA...
Defense Technical Information Archive
Dec 4, 2019 Defense Technical Information Center
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The response of an elastic uniaxial tension specimen to a constant velocity applied at one end is presented. The application to the problem of testing specimens with high rate testing machines where the velocity of the ram approaches the dilational wave velocity of the material is discussed. The concept of high strain rates is shown to break down under high loading rates.
Topics: DTIC Archive, Nicholas, T, AIR FORCE MATERIALS LAB WRIGHT-PATTERSON AFB OH, *TENSILE PROPERTIES,...
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Dec 4, 2019 Defense Technical Information Center
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The methods used by the Firing Tables Branch for the analysis of flight tests of fin-stabilized, free-flight missiles are outlined. Examples of obtaining thrust and aerodynamic drag from reduction of camera data with the aid of high speed computers are given. Determination of various performance parameters needed for the construction of firing tables is explained: some typical results are presented.
Topics: DTIC Archive, Lieske, Robert F, ARMY BALLISTIC RESEARCH LAB ABERDEEN PROVING GROUND MD, *ARTILLERY...
Defense Technical Information Archive
Dec 4, 2019 Defense Technical Information Center
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The most striking morphologic similarity between the lymphoid structure of the appendix and the thymus in adult New Zealand rabbits is the constant occurrence of large reticular cell derivatives in the cortico-medullary junction. This can be appreciated in both H and E and PAS preparations. The normal rabbit appendix is an ovoid lymphoid structure covered luminally with one or more layers of modified intestinal epithelium that lacks PAS reactivity but contains foci of lymphocytes. Laterally,...
Topics: DTIC Archive, Standen, Alfred C, FORT DETRICK FREDERICK MD, *TRANSPLANTATION, *THYMUS,...
Defense Technical Information Archive
Dec 4, 2019 Defense Technical Information Center
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This report describes the operation of the Uinta Basin Seismological Observatory from 1 November 1966 through 31 January 1967. Modifications and additions to the observatory instrumentation are described, and tests to improve the operation of the observatory are reported. Also discussed is the status of special investigations designed to evaluate and improve the detection capability of the observatory.
Topics: DTIC Archive, Leichliter, B B, GEOTECH GARLAND TX, *SEISMOLOGICAL STATIONS, CALIBRATION, DETECTION,...
Defense Technical Information Archive
Dec 4, 2019 Defense Technical Information Center
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The purpose of this study was to determine the amount of predictable noise at Uinta Basin Seismological Observatory (UBO) by the development and application of noise prediction filters. A comparison of the surface and the 200-ft buried array was conducted to determine if a large amount of noise was present which attenuates rapidly with depth. The determination of the amount of predictable noise at a particular array is desirable to determine or to explain the effectiveness of multichannel...
Topics: DTIC Archive, Burrell, George C, TEXAS INSTRUMENTS INC DALLAS SCIENCE SERVICE DIV, *SEISMOLOGICAL...
Defense Technical Information Archive
Dec 4, 2019 Defense Technical Information Center
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Engineering techniques for broadening the scope and improving the effectiveness of existing conventional value analysis are investigated. Present value analysis practices consist of re-evaluation of product functions and remedial redesign to effect reduction in product acquisition cost. What is desired is a method for quantitatively expressing value and therefrom formulating an engineering procedure for achieving high levels of value, exercising positive value control, promoting value...
Topics: DTIC Archive, Purvis, Russell E, RCA SERVICE CO SPRINGFIELD VA, *MANUFACTURING, *QUALITY CONTROL,...
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Dec 4, 2019 Defense Technical Information Center
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A current state-of-the-art survey is included to establish the status of porous ionizer material technology. Experimental results relating to particle size distribution and to the pore parameters of the resulting compacts are presented. Parameters such as sintering time and temperature, density, porosity, permeability, thermal stability, and ionizer performance were studied. The results to all the experimental investigations along with a description of the experimental approach are presented.
Topics: DTIC Archive, Kirkpatrick, M E, TRW SYSTEMS GROUP REDONDO BEACH CA, *CESIUM, *ION SOURCES, *POROUS...
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Dec 4, 2019 Defense Technical Information Center
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This report completes the research conducted on the regenerator section of Advancement of Small Gas Turbine Engine Component Technology. Work conducted by the Boeing Company under this task also included research on high- temperature turbine materials and high-pressure-ratio centrifugal compressors. The regenerator program covered by this report was started in May, 1964, and included (1) analytical studies of the heat transfer and pressure drop characteristics associated with small diameter,...
Topics: DTIC Archive, Wheeler, Anthony J, BOEING CO SEATTLE WA TURBINE DIV, *HEAT EXCHANGERS, *GAS...
Defense Technical Information Archive
Dec 4, 2019 Defense Technical Information Center
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Topics: DTIC Archive, SPERRY MICROWAVE ELECTRONICS CLEARWATER FL, *DIGITAL SYSTEMS, *FERRITES, *GARNET,...
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Results of wind tunnel studies concerned with transient and steady state performance of single and clustered parachutes in cargo extraction systems are presented. In Part I, circular flat and ringslot canopies single suspended and in clusters of 2, 3, and 4, were deployed in freestream, in the wake of an aircraft, and near a simulated ground. As a further means of analysis, wake pressure surveys were performed on the DHC-4 Caribou and the C-130 Hercules aircraft and are presented in Part 2.
Topics: DTIC Archive, Heinrich, H G, MINNESOTA UNIV MINNEAPOLIS DEPT OF AERONAUTICS AND ENGINEERING...
Defense Technical Information Archive
Dec 4, 2019 Defense Technical Information Center
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In order to determine whether CS aerosols, under tropical climatic conditions, offer any threat to the nonsensitized human integument, volunteers were exposed to high concentrations of CS for periods up to 1 hr. Second degree chemical burns occurred in four of the eight subjects exposed to a Ct of 14,040 or 17,700. It was generally noted that the volunteers most susceptible to sunburn (e.g., blue-eyed blonds as opposed to non-Caucasians) displayed the most severe reactions, even though...
Topics: DTIC Archive, Hellreich, Alfred, *CS AGENTS, AEROSOLS, ULTRAVIOLET RADIATION, EXPOSURE(PHYSIOLOGY),...
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Dec 4, 2019 Defense Technical Information Center
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A third series of devices using commercially available boat-grown material has been fabricated and tested. This series is slightly thinner than the previous runs and shows a slightly lower threshold and a slightly higher Gunn frequency; in all respects they are quite similar to the previous results. The estimated contact resistance for the devices is about 8% of the bulk resistance. Gunn effect devices have also been made from solution-grown GaAs material. These devices show a positive...
Topics: DTIC Archive, Wright, M L, HEWLETT-PACKARD LABS PALO ALTO CA, *MICROWAVE OSCILLATORS,...
Defense Technical Information Archive
Dec 4, 2019 Defense Technical Information Center
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The influence of horizontal wind shear layers upon descending, statically stable parachutes has been studied analytically and experimentally. The investigation is concerned with horizontal displacements, response velocity response time, and angle of attack. For comparison, experimental were conducted with two circular flat ribbon, two ringslot, and one ribless guide surface parachute model. The results show that the analytical predictions are a satisfactory first approximation of the observed...
Topics: DTIC Archive, Heinrich, H G, MINNESOTA UNIV MINNEAPOLIS DEPT OF AERONAUTICS AND ENGINEERING...
Opening shock, snatch forces, opening times, rates of descent, and down times of a number of man-carrying, cargo, and extraction parachutes are calculated on the basis of analytical equations and certain other assumptions. Comparisons of the calculated data with full scale experimental values are somewhat limited, but show reasonable agreement when available. This report represents a first step in an attempt to catalog full scale experimental values from which, eventually, more exact analytical...
Topics: DTIC Archive, Haak, Eugene L, MINNESOTA UNIV MINNEAPOLIS DEPT OF AERONAUTICS AND ENGINEERING...
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Dec 4, 2019 Defense Technical Information Center
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This data report describes work undertaken as part of an overall program to develop ground-flotation criteria for the C-5A aircraft. A test section was constructed to a width adequate for two test lanes. Each lane was divided into three items having different subgrade CBR values and different traffic surfaces. Item 1 was surfaced with modified T11 aluminum landing mat, item 2 with M8 steel mat, and item 3 remained unsurfaced. Traffic was applied to the lanes using a 70,000-lb load having...
Topics: DTIC Archive, Brabston, W N, ARMY ENGINEER WATERWAYS EXPERIMENT STATION VICKSBURG MS, *FLOTATION,...
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Dec 4, 2019 Defense Technical Information Center
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This report describes a series of experiments designed to assess the practical capability of acoustic emission to indicate stress and/or deformation in a structure, as well as to offer a means of assessing structural integrity. The tests were conducted on split ring samples and specimens of cylindrical form internally pressurized. The integrity of the cylindrical vessels was altered by inserting machined notches of various shapes at predetermined locations on the vessel surface. Specimens were...
Topics: DTIC Archive, Schofield, B H, LESSELLS AND ASSOCIATES INC WALTHAM MA, *PRESSURE VESSELS, STRESSES,...
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Dec 4, 2019 Defense Technical Information Center
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The Biospecialties Branch, MRMPB, 6570 Aerospace Medical Research Laboratories, initiated a research effort to support and supplement the Air Force Aeronautical Systems Division program concerned with the relationship of microbial contamination to deleterious changes in JP-4 fuel systems. Results of this program have shown the following: the majority of JP-4 fuel systems contain low levels of viable microorganisms; microorganisms are primarily associated with the water phase and rarely with the...
Topics: DTIC Archive, Finefrock, Viola H, SYSTEMS RESEARCH LABS INC DAYTON OH, *JET ENGINE FUELS, *FUEL...
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Dec 4, 2019 Defense Technical Information Center
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This study presents the functions, organization, and concepts of operation of an Army-wide medical service within a theater of operations for TASTA-70. The Medical Brigade, FASCOM, supports the field army through the employment of subordinate control headquarters, hospitals, evacuation units, and other medical service organizations. The Medical Command, TASCOM, provides command, planning, and continuous operation of the theater-wide medical service by relieving the field army of its patients...
Topics: DTIC Archive, ARMY COMBAT DEVELOPMENTS COMMAND MEDICAL SERVICE AGENCY FORT SAM HOUSTON TX, *ARMY...
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Dec 4, 2019 Defense Technical Information Center
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The exact solution to the problem of conduction of heat through a slab is developed. The solution, formulated in terms of an infinite series, allows arbitrary initial conditions and time-dependent boundary conditions. The solution is programmed in FORTRAN 4 for the IBM 7094 2 computer. Several check problems were solved and the results were compared with those obtained from a finite difference heat transfer program.
Topics: DTIC Archive, Bernstein, Thomas N, AIR FORCE FLIGHT DYNAMICS LAB WRIGHT-PATTERSON AFB OH, *THERMAL...
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Dec 4, 2019 Defense Technical Information Center
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The pole face losses associated with the alternating flux density that is produced by the slot and teeth in the armature for the 467 kva experimental generator were experimentally evaluated by using an eddy-current dynamometer. The design factors which influence pole face losses in the generator were duplicated in the test fixture as close as possible. Centrifugal stress in the rotor limited the tooth ripple frequency to one-half the tooth ripple frequency of the generator and it was necessary...
Topics: DTIC Archive, McCabria, Jack L, WESTINGHOUSE ELECTRIC CORP LIMA OH AEROSPACE ELECTRICAL DIV,...
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Dec 4, 2019 Defense Technical Information Center
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Vertical radiation patterns of vertical quarter-wave monopoles, and of vertical and horizontal half-wave dipoles located at various heights up to twenty wavelengths over several typical types of ground are shown. Vertical antennas have the best low-angle patterns at low heights and at medium heights over land. For low and medium antenna heights, only vertically polarized antennas over water radiate appreciable energy at zero or negative elevation angles. The propagation factor used to calculate...
Topics: DTIC Archive, Berry, Leslie A, INSTITUTE FOR TELECOMMUNICATION SCIENCES AND AERONOMY BOULDER CO,...
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Dec 4, 2019 Defense Technical Information Center
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The computation of firing tables for guided missiles is a problem that first arose when the U.S. Army introduced the Redstone Missile into its arsenal of weapons. The repetitive nature of such computations, their continuing requirement, and the turnover in personnel create a need for systemization of computations, applicable for different missile systems and at the same time, not requiring extensive analysis, new computer programs, and training of personnel. Recent work done by the Computing...
Topics: DTIC Archive, Breaux, Harold J, ARMY BALLISTIC RESEARCH LAB ABERDEEN PROVING GROUND MD, *RANGE...
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Dec 4, 2019 Defense Technical Information Center
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This report covers a step by step description of the procedures and techniques used in covering a 5 x 11 LR buoy body with an elastomeric antifoulant sheet rubber 'NOFOUL'. The marine growth foulfree life of the material is reported to be five years. A list of the materials and equipment used and application times involved is included with the report. A photographic record of the operation is also included with the report.
Topics: DTIC Archive, Cuthrell, C, COAST GUARD BALTIMORE MD FIELD TESTING AND DEVELOPMENT CENTER,...
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A large-scale VTOL test bed designed around the Ames Lift Engine Pod was used for ground-proximity tests at the Ames Research Center VTOL test facility, under sponsorship of the Naval Air Systems Command. Objectives were to obtain parametric data on gas ingestion and jet effects experienced by jet-powered VTOL configurations. Results showed that ingestion and induced-lift effects are configuration- and time-dependent; for many configurations the degree of ingestion experienced cannot be...
Topics: DTIC Archive, Lavi, Rahim, NORTHROP CORP HAWTHORNE United States, VERTICAL TAKEOFF AIRCRAFT, GROUND...
Digital computer programs for the calculation of underground shelter heat transfer are described with respect to their mathematical models, assumption, limitations, parameters, input data and computational techniques. The report also presents comparisons between the calculated shelter thermal environments with the observed for seven different prototype shelters. It has been found that the simple one-dimensional heat conduction model can accurately simulate the thermal environment in large...
Topics: DTIC Archive, Kusuda, Tamami, NATIONAL BUREAU OF STANDARDS WASHINGTONDC INST FOR APPLIED...
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Dec 4, 2019 Defense Technical Information Center
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The concept of a nonmechanical, mass, random access, plated-wire memory has been validated in this phase of the continuing U.S. Air Force program. The memory model fabricated for this contract has 10,000,000-bit positions housing over 2.3 megabits of plated wire. Of these bits, 32,768 4-bit words have been exercised with a memory exerciser. The following characteristics of the plated-wire mass memory have been demonstrated: Nondestructive readout (NDRO); Selection in the bit dimension to...
Topics: DTIC Archive, Chong, C, SPERRY RAND CORP PHILADELPHIA PA UNIVAC DIV, *MEMORY DEVICES, CONSTRUCTION,...
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Dec 4, 2019 Defense Technical Information Center
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The work presented in this data report was undertaken as part of an overall program to develop ground-flotation criteria for the C-5A aircraft. A test section was constructed to a width adequate for two test lanes. Each lane was divided into three items having different subgrade CBR values and different traffic surfaces. Item 1 was surfaced with modified T11 aluminum landing mat, item 2 with M8 steel landing mat, and item 3 remained unsurfaced. Traffic was applied to both lanes using a...
Topics: DTIC Archive, Watkins, J, ARMY ENGINEER WATERWAYS EXPERIMENT STATION VICKSBURG MS, *FLOTATION,...
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Dec 4, 2019 Defense Technical Information Center
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This data report describes work undertaken as part of an overall program to develop ground-flotation criteria for the C-5A aircraft. A test section was constructed to a width adequate for two test lanes. Each lane was divided into three items having different subgrade CBR values and different traffic surfaces. Item 1 was surfaced with modified T11 aluminum landing mat, item 2 was surfaced with M8 steel landing mat, and item 3 was unsurfaced. Traffic was applied to one lane using a 35,000-lb...
Topics: DTIC Archive, Brabston, W N, ARMY ENGINEER WATERWAYS EXPERIMENT STATION VICKSBURG MS, *FLOTATION,...
Defense Technical Information Archive
Dec 4, 2019 Defense Technical Information Center
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This data report describes work undertaken as part of an overall program to develop ground-flotation criteria for the C-5A aircraft. A test section was constructed to a width adequate for two test lanes. Each lane was divided into three items having different subgrade CBR values and different traffic surfaces. Item 1 was surfaced with modified T11 aluminum landing mat, item 2 with M8 steel landing mat, and item 3 was unsurfaced. Traffic was applied using a 140,000-lb test load with a twin-twin...
Topics: DTIC Archive, Brabston, W N, ARMY ENGINEER WATERWAYS EXPERIMENT STATION VICKSBURG MS, *FLOTATION,...
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This report presents a method of analytically determining the general downwash flow field parameters of various types of V/STOL aircraft. The basic difference between the operation of V/STOL aircraft and conventional aircraft is their method of take-off and landing. During these operations, V/STOL aircraft produce high downwash air velocities that impinge and spread out over the surface of the ground. Depending on the size, type, and number of engines on the aircraft, this downwash can cause...
Topics: DTIC Archive, Hohler, David J, AIR FORCE AERO PROPULSION LAB WRIGHT-PATTERSON AFB OH, *VERTICAL...
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Dec 4, 2019 Defense Technical Information Center
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It is becoming more apparent that a fair proportion of high-frequency backscatter from level portions of the earth's surface results from upright targets such as trees and buildings. Using the standing-wave method, at 26 MHz, trees have been investigated at angles of incidence (with respect to the horizontal) up to 22.5 degrees. It was found that a tree may provide significant scatter. The present undertaking was to measure--by the same technique-- backscatter from cement walls of different...
Topics: DTIC Archive, Barnum, J R, STANFORD UNIV CA STANFORD ELECTRONICS LABS, *RADAR CROSS SECTIONS,...
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Dec 4, 2019 Defense Technical Information Center
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The report describes the work performed during the second quarter of a study of a reflector antenna that provides zoom (variable beamwidth) and scan capability using controlled aperture amplitude and phase. The antenna consists of a primary reflector (paraboloid) and a secondary reflector/lens. It operates as a lens in conjunction with one feed for scanning in the receive mode and as a reflector in conjunction with another feed for zooming in the transmit mode. Switching between a zooming...
Topics: DTIC Archive, DeSize, Lorne K, AIRBORNE INSTRUMENTS LAB DEER PARK NY, *REFLECTORS, *ANTENNA ARRAYS,...
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Dec 4, 2019 Defense Technical Information Center
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When suspensions of psittacosis organisms were injected intracerebrally into groups of mice, a nearly linear relationship was observed between the concentration of the agent injected and the mean time to death of the mice. Thirty-four psittacosis preparations were assayed and by plotting the relationship between the reciprocal time to death for mice given the 10 to the minus 3 power dilution of agent and the MICLD sub 50 values for the preparations, a reference curve was established. This...
Topics: DTIC Archive, Riley, Jean M, FORT DETRICK FREDERICK MD, *MIYAGAWANELLA PSITTACI, PREDICTIONS, MICE,...
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Dec 4, 2019 Defense Technical Information Center
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A unique defense mechanism against Bacillus anthracis was demonstrated by the Pitman-Moore variety of dwarf swine. A large percentage of spores failed to germinate in vivo when massive doses were administered via either the respiratory or intraperitoneal route. Only spores with no apparent outgrowth of vegetative cells could be cultured from the blood. Therefore the defense mechanism enables the swine to prevent germination and outgrowth of B. anthracis spores in vivo.
Topics: DTIC Archive, Walker, Jerry S, FORT DETRICK FREDERICK MD, *BACILLUS ANTHRACIS, SPORES, INFECTIOUS...
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Dec 4, 2019 Defense Technical Information Center
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Topics: DTIC Archive, Berry, W E, BATTELLE MEMORIAL INST COLUMBUS OH DEFENSE METALS INFORMATION CENTER,...
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Topics: DTIC Archive, Bogdanow, A P, INSTITUTE OF MODERN LANGUAGES INC WASHINGTON DC, *BOATS, *INLAND...
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Dec 4, 2019 Defense Technical Information Center
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Leeward surface pressures, oil flow photographs, and flow field pressure surveys were obtained at a nominal Mach number of 10 for a 75-deg sharp leading-edge delta wing. Tests were conducted at free-stream unit Reynolds numbers of 730,000 and 1,460,000/ft, angles of attack from 0 to 21 deg, and zero sideslip angle. Selected results are presented to illustrate the quality and types of data obtained.
Topics: DTIC Archive, Spurlin, C J, ARNOLD ENGINEERING DEVELOPMENT CENTER ARNOLD AFB TN, *DELTA WINGS,...
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Dec 4, 2019 Defense Technical Information Center
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The measurements of the velocity of sound in liquid and solid helium reported here were made as a part of a more comprehensive study to determine the clastic properties of substances at very low temperatures. The equipment described is capable of measuring velocities of sound as a function of temperature and pressure for temperatures between one and four degrees K and pressures between one and 8o atmospheres. The velocities in the liquid compare well with other published values. No previous...
Topics: DTIC Archive, Jordan, Robert D, NAVAL POSTGRADUATE SCHOOL MONTEREY CA, *HELIUM, *SOLIDIFIED GASES,...
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Dec 4, 2019 Defense Technical Information Center
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By using a special sampling method, a significant, but limited, increase in Venezuelan equine encephalitis (VEE) virus titer can be detected during early 44 C incubation of VEE-infected chick embryo (CE) cells. The maximum titer is 0.1 to 1% that of cultures incubated at 37C. The magnitude of the increase in titer is not a function of size of virus inoculum. The limitation of the increase was not due to lack of adsorption or to medium alteration at 44C. The best conditions for demonstrating the...
Topics: DTIC Archive, Halle, Sidney, FORT DETRICK FREDERICK MD, *VENEZUELAN EQUINE ENCEPHALOMYELITIS VIRUS,...
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Bands resembling typical antigen-antibody precipitates developed in Ouchterlony gel diffusion tests between sera from certain individual animals and bacteriologically filtered cultures of Aeromonas salmonicida or Vibrio parahemolyticus. After incubation for several days these bands became coarsely granular and progressively more diffuse. Microsocopic examination revealed them to be made up of massive numbers of what appeared to be microcolonies of barely visible filamentous bacillary forms. All...
Topics: DTIC Archive, Janssen, Werner A, FORT DETRICK FREDERICK MD, *ANTIGEN ANTIBODY REACTIONS, BACTERIA,...
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Dec 4, 2019 Defense Technical Information Center
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This report covers the third quarter effort on the development of nozzles using bulk pyrolytic graphite. The firing data on the first unit have been reduced and indicates an average erosion rate of 0.94 mils/sec. over seventy seconds. The second nozzle was fabricated and fired during this period. The insert was ejected at 51 seconds in a scheduled sixty second firing. The reason for insert ejection this late in the firing has not been fully determined. Average chamber pressure was 662 psi with...
Topics: DTIC Archive, PYROGENICS INC WOODSIDE NY, *PYROLYTIC GRAPHITE, *ROCKET NOZZLES, CAPTIVE TESTS,...
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Dec 4, 2019 Defense Technical Information Center
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By means of photographic techniques, the size histories, ignition lags, and loci of ignition of small (100-300 microns diameter), single, freely falling fuel droplets suddenly exposed to a hot, oxidizing atmosphere in a furnace were determined as a function of initial droplet size, oxidizer temperature, fuel composition, and droplet spacing. The results show that ignition lag depends significantly on the temperature of the atmosphere, on the droplet-droplet spacing, and on the chemical nature...
Topics: DTIC Archive, Wood, Bernard J, STANFORD RESEARCH INST MENLO PARK CA, *AEROSOLS, PHOTOGRAPHIC...
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Dec 4, 2019 Defense Technical Information Center
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Topics: DTIC Archive, Osanka, Franklin M, GEORGE WASHINGTON UNIV ALEXANDRIA VA HUMAN RESOURCES RESEARCH...
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An improved formula has been devised for the calculation of gamma-ray dose attenuation in two-legged air ducts through concrete. Comparisons are given between the predictions of the simple empirical formula and the results of measurements as well as predictions obtained by a more complicated computational technique. The accuracy of the empirical formula is discussed. It is shown that the formula is highly accurate, having essentially zero bias and a standard deviation of less than 14 percent of...
Topics: DTIC Archive, Huddleston, C M, NAVAL CIVIL ENGINEERING LAB PORT HUENEME CA, *SHELTERS, *GAMMA RAYS,...
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This paper summarizes the third period of research in support of the Advanced Research Projects Agency small unit tactical communications project entitled, Communications Research and Development Data Collection Program in the Republic of Vietnam. It presents an initial analysis of Vietnamese patrol and base practices and discusses the on-going program of communications data collection among U.S. and Free World Forces units. It describes communications practices in use by some of these units...
Topics: DTIC Archive, Shirley, John R, BOOZ-ALLEN APPLIED RESEARCH INC WASHINGTON DC SOUTHEAST ASIA...
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This report contains the results of an experimental and theoretical study relating to the stabilized cyclic state of materials. The objectives accomplished in the program were (1) the experimental verification of the important role played by the cyclic state in fatigue; (2) the correlation of virgin material properties with the cyclic stress-strain curve for four materials (2024-0 and 2024-T351 aluminum alloy plus annealed and hard OFHC copper); and (3) the application of the cyclic...
Topics: DTIC Archive, Younger, Jr, Dewey G, PHILCO NEWPORT BEACH CA AERONUTRONIC DIV, *METALS, STRESSES,...
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Fuel efficiency of the hydrazine-air fuel cell system can be significantly increased by selecting a proper electrode substrate. It must be a poor hydrogen electrode material, according to the mixed potential concept. Both the anode potential and the fuel efficiency were improved by applying a minute amount of catalyst poisons such as S= and Se=. The anode potential was increased by increasing the concentration of KOH and N2H4 in the electrolyte. The anode potential was not affected by C1- up to...
Topics: DTIC Archive, Matsuda, Seigo, MONSANTO RESEARCH CORP EVERETT MA BOSTON LAB, *FUEL CELLS, ANODES,...
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A review of the present state of knowledge of axisymmetric base drag is given. With application to ballistics in mind, this review is especially concerned with supersonic flight and turbulent boundary layers. Correlations of base pressure are discussed as well as some analytical methods for attacking the problem; no satisfactory analytic theory exists. Experimental methods for determining base pressure in wind tunnels and ballistic ranges are discussed. The effect of a boattail on total drag...
Topics: DTIC Archive, Sedney, Raymond, ARMY BALLISTIC RESEARCH LAB ABERDEEN PROVING GROUND MD, *BASE FLOW,...
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Topics: DTIC Archive, Frassetto, R, SACLANT ASW RESEARCH CENTRE LA SPEZIA (ITALY), *GIBRALTAR STRAIT,...
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As a background to this subject, a brief description of the hydrology and the long-term vertical displacements of the surface layers is first presented. This is based on observations made by various authors prior to 1957 and by three expeditions organised by the NATO Sub-Committee on Oceanography in the summer periods of 1958, 1960, and 1961. The principal part of the report is based on observations of short-term displacements made by the author in the summer periods of 1958, 1959, and 1961,...
Topics: DTIC Archive, Frassetto, R, SACLANT ASW RESEARCH CENTRE LA SPEZIA (ITALY), *GIBRALTAR STRAIT,...
The four pieces of equipment described in this report have been designed to facilitate the handling of oceanographic cables by replacing the heavy, and often expensive equipment at present in use with lighter, less expensive units. They consist of a miniature slip ring installation for multi- conductor cables that considerably improves the signal-to-noise ration; a light and sturdy pulley that swings freely with the movement of the cable, thereby reducing chafing and breaking; and two compact...
Topics: DTIC Archive, Frassetto, R, SACLANT ASW RESEARCH CENTRE LA SPEZIA (ITALY), *ELECTRIC CABLES, *SLIP...
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Contents: Propagation of EM Waves, Surface Waves, Ionosphere; Calculation of DC and EM Fields, Antennas; Analysis, Measuring Methods, Magnetometers, Correlation; Geomagnetic Fluctuations, Solar Activity, Earth Currents; Atmospherics, Whistlers, Lightning; Propagation of Transients, Scattering; Miscellaneous (Plasma Physics, Fundamental Theories, etc.); ASW applications
Topics: DTIC Archive, Brock-Nannestad, L, SACLANT ASW RESEARCH CENTRE LA SPEZIA (ITALY), *TRANSIENTS,...
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An analogue recording system for the visual display of pulse series intermittently received from oceanographic sensors is described. It is composed of a mechanically-modified pen recorder and a newly designed electronic driving unit, and it includes arrangements for (1) regulating the speed of the pulse- marking device by means of a stable reference frequency; (2) starting each pulse series on command; and (3) expanding the measuring scale. These requirements could not be found in commercially...
Topics: DTIC Archive, Pesaresi, R, SACLANT ASW RESEARCH CENTRE LA SPEZIA (ITALY), *ELECTRONIC RECORDING...
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A new type of discriminator was developed to measure the frequency variation of electrical signals; it has the special feature to indicate without any delay the difference between the signal frequency and some fixed reference frequency. The discriminator consists of two different parallel, frequency sensitive, networks, the outputs on which are always either in phase or in phase opposition but have different amplitudes. On a CRT screen these two voltages produce a line; the length of the line...
Topics: DTIC Archive, Rynja, H A, SACLANT ASW RESEARCH CENTRE LA SPEZIA (ITALY), *DISCRIMINATORS,...
The paper describes an anchor-releasing device for the recovery of moored oceanographic equipment. The releaser is actuated by a remote acoustic signal emitted by a small and powerful 1400 cps sound source rather than by unsafe explosive charges. The acoustic power output of the source can be regulated according to the range of operation, up to a maximum of 400 watts. The submerged unit is self-contained, remains active for several months and is recovered together with the oceanographic...
Topics: DTIC Archive, Frassetto, R, SACLANT ASW RESEARCH CENTRE LA SPEZIA (ITALY), *ACOUSTIC EQUIPMENT,...
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An exact solution for ray paths near a sound channel with parabolic velocity profile is given for rays crossing the sound channel axis at small angles. The convergent zone for such rays for a source on axis is compared with the numerically computed results of M. A. Pederson, J. Acoust. Soc. Am., 33, 465, (1961). Two simple straight line velocity gradient approximations are compared with the parabolic case for the purpose of observing their accuracy. Both cases show surprisingly good agreement...
Topics: DTIC Archive, Goodman, R R, SACLANT ASW RESEARCH CENTRE LA SPEZIA (ITALY), *SOUND TRANSMISSION,...
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Topics: DTIC Archive, CENTRAL INTELLIGENCE AGENCY WASHINGTONDC FOREIGN DOCUMENTS DIV, *ABSTRACTS, USSR,...
This is a report of the order, severity, and resolution of pathologic changes in Macaca mulatta monkeys exposed to low concentrations of DM or CS for extended periods. The following observations were made: (1) Exposure of the monkeys to low concentrations of CS for relatively long periods (Ct, 265 to 9120 mg min/cu m; t, 5 to 30 min) produced few clinical signs, no systemic manifestations of toxicity, and no pathologic changes. (2) Exposure of the monkeys to low concentrations of DM for...
Topics: DTIC Archive, Striker, G E, EDGEWOOD ARSENAL ABERDEEN PROVING GROUND MD, *TEAR GAS, AEROSOLS,...
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A wind tunnel investigation was conducted to obtain the structural response of 0.07-scaled aeroelastic models of Titan III missile configurations to buffet airloads at transonic Mach numbers. Test results in the form of bending-moment response in the pitch and yaw planes were obtained for various payload, upper stage, and booster combinations. The tests were conducted in the Mach number range from 0.6 to 1.4 and at angles of attack ranging from 0 to 4 deg. The basic Centaur/Voyager...
Topics: DTIC Archive, Robertson, J E, ARNOLD ENGINEERING DEVELOPMENT CENTER ARNOLD AFB TN, *LAUNCH...
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Humidity is as important as dissolved oxygen in its effect on friction and wear. For most pure hydrocarbons and all the commercial fuels, wear and friction increase with oxygen and moisture content, indicating that corrosive wear is the controlling mode of wear. Methyl naphthalene remains an anomaly. It gives very high wear and friction in a dry inert atmosphere. Both oxygen and water greatly reduce this wear. Differences among fuels are accentuated by high oxygen content, high humidity, high...
Topics: DTIC Archive, Appeldoorn, J K, ESSO RESEARCH AND ENGINEERING CO LINDEN NJ PRODUCTS RESEARCH DIV,...
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Topics: DTIC Archive, ARMY CONCEPT TEAM IN VIETNAM APO SAN FRANCISCO 96384, *GRENADES, *BAGS, MARINE CORPS,...
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Pertinent soil trafficability data were collected during the wet season at 846 sites in Thailand. The soils were identified according to the Unified Soil Classification System and the U. S. Department of Agriculture textural classification system. Two general topographic positions (high topography and low topography) and two general levels of wetness were considered. A scheme for classifying soils according to their trafficability was developed. The scheme lists the soil types in order of...
Topics: DTIC Archive, Meyer, M P, ARMY ENGINEER WATERWAYS EXPERIMENT STATION VICKSBURG MS, *SOILS,...
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Various types of load bearing and weather-resistant surfaces were fabricated in Southeast Asia (SEA) utilizing a quick-curing fiberglass reinforced resin system. These test sites were constructed to gain operational data in the use of this construction method when utilized in a remote environment under actual use conditions. Ten different types of sites were constructed as follows: sand ammo revetment stabilization, cargo storage, engine runup station, sand bag emplacement, pierced steel...
Topics: DTIC Archive, Blakeley, Clarence, LTV AEROSPACE CORP DALLAS TX VOUGHT AERONAUTICS DIV, *POLYESTER...
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This report describes an investigation of circuit techniques to minimize spurious responses in varactor-tuned filters. Design equations for the center frequency, bandwidth and insertion loss of single and multiple-resonator filters are presented. Series-resonant filters with one and two resonators were constructed and measurements of their performance characteristics were made. One- and two-resonator filters were also constructed using a pair of opposingly biased varactors (push-pull circuit)...
Topics: DTIC Archive, Hecht, Solomon, AIRBORNE INSTRUMENTS LAB DEER PARK NY, *TUNING DEVICES, *ELECTRIC...
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A matched filter approach for distinguishing weak teleseismic surface wave signals from background noise is presented. The method discriminates against events not located in a particular source region of interest and provides estimates of magnitude and radiation pattern, when a number of recording stations are available. Test cases and typical results for different source regions are discussed.
Topics: DTIC Archive, Alexander, S S, TELEDYNE INDUSTRIES INC ALEXANDRIA VA EARTH SCIENCES DIV, *SEISMIC...
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This monograph presents an exposition of the subject of truncated sequential tests. Although the main intent of this report is tutorial in nature, some previously unpublished results have been included. Special emphasis has been given to the following topics: (1) the practical necessity for truncation; (2) the effects of truncation on the performance of the test; (3) the results of computer simulation; and (4) rules of truncation and application of principles of design.
Topics: DTIC Archive, Bussgang, Julian J, SIGNATRON INC LEXINGTON MA, *TARGET RECOGNITION, *RADAR SIGNALS,...
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This report covers an exploratory development program to establish design technology for hydraulic pumps capable of being driven directly from aircraft gas turbine propulsion engines. The program was divided into a study phase, design phase, fabrication phase, and a test phase. After completing the study phase, the orbital type pump was chosen by the Air Force Propulsion Laboratory for design, fabrication, and test. Other pumping concepts were available that would theoretically reach the...
Topics: DTIC Archive, Perian, Frederick W, VICKERS INC TROY MI AEROSPACE DIV, *HYDRAULIC PRESSURE PUMPS,...
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In the contract period covered by this report a series of photochemically stable fluorescent converter solutions has been composed. At the beginning of the contract period some new stable UV transmitting solution filters were developed and with these photo-stability of the converter solutions could be studied under irradiation with high intensity UV light only. The results of the investigation concerning the UV transmitting filters has been reported earlier and is now available in print....
Topics: DTIC Archive, Claesson, Stig, UPPSALA UNIV (SWEDEN) INST OF PHYSICAL CHEMISTRY, *FLUORESCENCE,...