WorldCat Identities

United States Army Aviation Systems Command

Overview
Works: 349 works in 447 publications in 1 language and 16,366 library holdings
Genres: History  Periodicals  Newspapers 
Classifications: TL521.3, 956.7044
Publication Timeline
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Most widely held works about United States
 
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Most widely held works by United States
Implementation of an intelligent control system by D. L Simon( )

3 editions published in 1992 in English and held by 234 WorldCat member libraries worldwide

A laboratory testbed facility which has been constructed at the NASA Lewis Research Center for the development of an Intelligent Control System (ICS) for reusable rocket engines is described. The framework of the ICS consists of a hierarchy of various control and diagnostic functions. The traditional high speed, closed-loop controller resides at the lowest level of the ICS hierarchy. Above this level resides the diagnostic functions which identify engine faults. The ICS top level consists of the coordination function which manages the interaction between an expert system and a traditional control system. The purpose of the testbed is to demonstrate the feasibility of the ICS concept by implementing the ICS as the primary controller in a simulation of the Space Shuttle Main Engine (SSME)
A data acquisition and control program for axial-torsional fatigue testing by Sreeramesh Kalluri( )

3 editions published in 1989 in English and held by 152 WorldCat member libraries worldwide

Determination of depth-viewing volumes for stereo three-dimensional graphic displays by Russell V Parrish( Book )

3 editions published in 1990 in English and held by 148 WorldCat member libraries worldwide

Computer code for predicting coolant flow and heat transfer in turbomachinery by Peter L Meitner( Book )

3 editions published in 1990 in English and held by 147 WorldCat member libraries worldwide

Stereopsis cueing effects on hover-in-turbulence performance in a simulated rotorcraft by Russell V Parrish( Book )

3 editions published in 1990 in English and held by 144 WorldCat member libraries worldwide

Behavior of composite/metal aircraft structural elements and components under crash type loads : what are they telling us? by Huey D Carden( Book )

1 edition published in 1990 in English and held by 140 WorldCat member libraries worldwide

An incremental strategy for calculating consistent discrete CFD sensitivity derivatives( Book )

1 edition published in 1992 in English and held by 140 WorldCat member libraries worldwide

In this preliminary study involving advanced CFD codes, an incremental formulation, also known as the delta or 'correction' form, is presented for solving the very large sparse systems of linear equations which are associated with aerodynamic sensitivity analysis. For typical problems in 2D, a direct solution method can be applied to these linear equations in either the standard or the incremental form, in which case the two are equivalent. Rerative methods appear to be needed for future 3D applications, however, where direct solver methods require much more computer memory than is currently available. Iterative methods for solving these equations in the standard form result in certain difficulties, such as ill-conditioning of the coefficient matrices, which can be overcome when these equations are cast in the incremental form; these and other benefits are discussed herein. The methodology is successfully implemented and tested in 2D using an upwind, cell-centered, finite volume formulation applied to the thin-layer Navier-Stokes equations. Results are presented for two laminar sample problems: (1) transonic flow through a double-throat nozzle, and (2) flow over an isolated airfoil
Wind-tunnel evaluation of a 21-percent-scale powered model of a prototype advanced scout helicopter by Arthur E Phelps( )

2 editions published in 1985 in English and held by 139 WorldCat member libraries worldwide

Mechanical property characterization and impact resistance of selected graphite/PEEK composite materials by Donald J Baker( Book )

1 edition published in 1991 in English and held by 139 WorldCat member libraries worldwide

A basis for solid modeling of gear teeth with application in design and manufacture( Book )

1 edition published in 1992 in English and held by 138 WorldCat member libraries worldwide

Computerized inspection of gear tooth surfaces( Book )

1 edition published in 1989 in English and held by 137 WorldCat member libraries worldwide

Determination of real machine-tool settings and minimization of real surface deviation by computerized inspection by F. L Litvin( Book )

1 edition published in 1991 in English and held by 136 WorldCat member libraries worldwide

A numerical method is developed for the minimization of deviations of real tooth surfaces from the theoretical ones. The deviations are caused by errors of manufacturing, errors of installment of machine-tool settings and distortion of surfaces by heat-treatment. The deviations are determined by coordinate measurements of gear tooth surfaces. The minimization of deviations is based on the proper correction of initially applied machine-tool settings. The contents of accomplished research project cover the following topics: (1) Description of the principle of coordinate measurements of gear tooth surfaces; (2) Derivation of theoretical tooth surfaces (with examples of surfaces of hypoid gears and references for spiral bevel gears); (3) Determination of the reference point and the grid; (4) Determination of deviations of real tooth surfaces at the points of the grid; and (5) Determination of required corrections of machine-tool settings for minimization of deviations
Observations on computational methodologies for use in large-scale, gradient-based, multidisciplinary design incorporating advanced CFD codes( Book )

1 edition published in 1992 in English and held by 136 WorldCat member libraries worldwide

Differential equation based method for accurate approximations in optimization by Jocelyn I Pritchard( Book )

1 edition published in 1990 in English and held by 132 WorldCat member libraries worldwide

Surface pitting fatigue life of noninvolute, low-contact-ratio gears by Dennis P Townsend( Book )

1 edition published in 1990 in English and held by 131 WorldCat member libraries worldwide

Influence of linear profile modification and loading conditions on the dynamic tooth load and stress of high contact ration gears( Book )

1 edition published in 1990 in English and held by 131 WorldCat member libraries worldwide

Combined effect of matrix cracking and stress-free edge on delamination by Satish A Salpekar( Book )

1 edition published in 1990 in English and held by 130 WorldCat member libraries worldwide

Description of the U.S. Army small-scale 2-meter rotor test system by Arthur E Phelps( Book )

1 edition published in 1987 in English and held by 128 WorldCat member libraries worldwide

A small scale powered rotor model was designed for use as a research tool in the exploratory testing of rotors and helicopter models. The model, which consists of a 29 hp rotor drive system, a four blade fully articulated rotor, and a fuselage, was designed to be simple to operate and maintain in wind tunnels of moderate size and complexity. Two six-component strain-gauge balances are used to provide independent measurement of the rotor and fuselage aerodynamic loads. Commercially available standardized hardware and equipment were used to the maximum extent possible, and specialized parts were design so that they could be fabricated by normal methods without using highly specialized tooling. The model was used in a hover test of three rotors having different planforms and in a forward flight investigation of a 21 percent scale model of a U.S. Army scout helicopter equipped with a mast mounted sight. Keywords: Rotor model; Hover testing; Rotor scaling
Computer simulation of gear tooth manufacturing processes by Dimitri Mavriplis( Book )

1 edition published in 1990 in English and held by 128 WorldCat member libraries worldwide

NACA 0015 wing pressure and trailing vortex measurements by Kenneth W McAlister( Book )

1 edition published in 1991 in English and held by 127 WorldCat member libraries worldwide

 
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Alternative Names

controlled identityU.S. Army Aviation and Troop Command

Army Aviation Systems Command

AVSCOM

United States Army Army Aviation Systems Command

United States. Army. Aviation Systems Command

United States US Army Aviation Systems Command

US Army Aviation Systems Command

USAAVSCOM

Languages
English (62)