| Plasma Surface Modification of Advanced Organic Fibres. Part 4. Evidence of Chemical Bonding Between Epoxy Resins and Fibre Surface Amine Groups |
93 |
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| Authors:
J. R. Brown; P. J. Chappell; MATERIALS RESEARCH LABS ASCOT VALE (AUSTRALIA)
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 | In this letter we present the results of XPS experiments carried out on untreated and ammonia plasma-treated aramid and ECPE fibres after exposure to DGEBA-Br. We also discuss, in the context of our own findings, aramid/epoxy and ECPE/epoxy interfacial adhesion results obtained by other researchers. |
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| An Improved Technique for Measuring Damping Properties of Advanced Polymer Composites |
91 |
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| Authors:
J. R. Brown; J. R. Lingard; DEFENCE SCIENCE AND TECHNOLOGY ORGANIZATION CANBERRA (AUSTRALIA)
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| An improved technique based on forced resonant-vibration modal testing in the frequency domain has been developed to provide accurate measurements of the damping properties of advanced fibre-reinforced polymer composite materials. The technique utilizes a symmetric double cantilever beam composite specimen which is excited at its midpoint in transverse (flexural) vibration. Excitation is effected by an electro-magnetic shaker operation in a swept sine mode over the desired frequency range. Beam excitation ... |
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| Ballistic Properties of Composite Materials for Personnel Protection |
89 |
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| Authors:
J. R. Brown; G. T. Egglestone; MATERIALS RESEARCH LABS ASCOT VALE (AUSTRALIA)
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| The Australian Army currently has requirements for new combat and vehicle crewman helmets. Various polymer materials in the form of fibre- reinforced organic matrix composites have been shown to have sufficient resistance to ballistic impact to be regarded as attractive construction materials for personnel protective helmets. This report discusses the relative ballistic properties of those organic matrix composite materials which are considered as prime candidates to meet the requirements of ... |
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| System Requirements Impact on Advanced OTV Engine Design |
08 JUL 1985 |
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| Authors:
J. R. Brown; PRATT AND WHITNEY WEST PALM BEACH FL GOVERNMENT PRODUCTS DIV
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| Cryogenic vehicles for orbit transfer have been under study since 1970. During the decade of the 70s, the studies emphasized a Shuttle-compatible, ground-based vehicle. The topics of man-rating and aeroassisted return from GEO were addressed in the 1980 OTV Concept Definition Study. Based on the requirements of these studies for an advanced engine, the advanced expander cycle engine for a high-performance OTV was designed. Subsequently, a number of issues, such ... |
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| Relational Programming: Design and Implementation of a Prototype Interpreter |
JUN 85 |
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| Authors:
J. R. Brown; S. G. Mitton; NAVAL POSTGRADUATE SCHOOL MONTEREY CA
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| Relational programming is a methodology which combines the advantages of functional programming with the relatively simple laws which govern relations. The goal is to give the programmer an environment which allows a higher level of programming abstraction than currently exists, an easier approach to proving programs correct, and a language which can support new parallel architectures. In this thesis, the design and implementation of a prototype interactive interpreter for a ... |
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| Design And Analysis Report For The RL10-2B Breadboard Low Thrust Engine |
12 DEC 1984 |
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| Authors:
J. R. Brown; R. R. Foust; D. E. Galler; P. G. Kunic; T. D. Kmiee; PRATT AND WHITNEY WEST PALM BEACH FL GOVERNMENT PRODUCTS DIV
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| The breadboard low-thrust RL10-2B engine is described. A summary of the analysis and design effort to define the multimode thrust concept applicable to the requirements for the upper-stage vehicles is provided. Baseline requirements were established for operation of the RL10-2B engine under the following conditions: (1) tank head idle at low propellant tank pressures without vehicle propellant conditioning or settling thrust; (2) pumped idle at a ten percent thrust level ... |
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| Effects of Ribavirin on Red Blood Cells |
1984 |
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| Authors:
P. G. Canonico; M. D. Kastello; C. T. Spears; J. R. Brown; E. A. Jackson; ARMY MEDICAL RESEARCH INST OF INFECTIOUS DISEASES FORT DETRICK MD
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| Photochemical Ageing of Kevlar 49, |
APR 1983 |
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| Authors:
J. R. Brown; N. M. Browne; P. J. Burchill; G. T. Egglestone
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| Photochemical ageing of yarns from two similar Kevlar 49 fabrics (one woven in the U.K. and the other woven in the U.S.) and unwoven Kevlar 49 yarns and filaments, was studied by changes in mechanical and molecular properties. The warp and weft yarns from each fabric showed different susceptibilities to photo-induced deterioration, as indicated by their respective tensile properties. The warp yarn of the U.K. fabric photodegraded faster than the ... |
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| Adjuvant Effects of Low Doses of a Nuclease-Resistant Derivative of Polyinosinic Acid.Polycytidylic Acid on Antibody Responses of Monkeys to Inactivated Venezuelan Equine Encephalomyelitis Virus Vaccine, |
15 JAN 1979 |
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| Authors:
D. G. Harrington; C. L. Crabbs; D. E. Hilmas; J. R. Brown; G. A. Higbee; ARMY MEDICAL RESEARCH INST OF INFECTIOUS DISEASES FREDERICK MD
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| Functional Programming. |
FEB 1978 |
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| Authors:
J. R. Brown; E. C. Nelson; TRW DEFENSE AND SPACE SYSTEMS GROUP REDONDO BEACH CALIF
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| This document is the final technical report and computer program documentation for the project entitled Functional Programming, Contract F30602-76-C-0315. It presents the results of a thirteen month study of a new methodology for software development. The new techniques, collectively called Functional Programming (FP), are described in the report as are the results of varied applications of the methods in both the rewriting of existing programs and the development of new ... |
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| Fire Hazards of Organic Materials--Small Scale Assessment of Flammability and Smoke Generation, |
29 OCT 1975 |
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| Authors:
J. R. Brown; P. Dunn; AUSTRALIAN DEFENCE SCIENTIFIC SERVICE MELBOURNE
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| Development of Stall Deterrent Concepts for General Aviation Aircraft. |
FEB 1975 |
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| Authors:
H. L. Chevalier; C. R. Gallaway; J. R. Brown; TEXAS A AND M UNIV COLLEGE STATION FLIGHT MECHANICS LAB
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| An analytical study was conducted to determine the feasibility of five approaches to develop an airplane stall deterrent device. For three approaches the static longitudinal stability and control characteristics of a typical light single-engine and twin-engine airplane were obtained and modified with each stall deterrent device. These characteristics were compared to those of an ideal stall deterrent airplane. The five approaches to stall deterrence were the use of a segmented ... |
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| Reinforced Plastic Wind Tunnel Compressor Blades, |
08 FEB 55 |
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| Authors:
I. M. Zeasman; J. R. Brown
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| Reinforced plastic, foam filled compressor blades have been developed to replace wood for use in the compressor of the world's largest privately owned transonic wind tunnel. This twenty-four foot diameter compressor has a two stage rotor of thirty-six blades each. These blades have, at the time of this writing, over 500 hours of successful operation with no indication of any structural defects. (Author). |
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Reports by Author
