WorldCat Identities

Petty, James S.

Works: 15 works in 22 publications in 1 language and 32 library holdings
Roles: Author
Classifications: QA76.73.F25, 001.535
Publication Timeline
Most widely held works about James S Petty
Most widely held works by James S Petty
Contouring and Hidden-line Algorithms for Vector Graphic Displays by James S Petty( Book )

4 editions published in 1977 in English and held by 6 WorldCat member libraries worldwide

This report describes several computer graphics techniques developed by the authors to display the results of turbomachinery design and performance calculations. It begins with basic contour plotting, then shows the procedures for drawing three-dimensional figures with or without perspective and concludes with descriptions of two methods of removing hidden lines from three-dimensional scenes. Numerous examples and program listings are included. (Author)
Similar solutions of the attached and separated compressible laminar boundary layer with heat transfer and pressure gradient by James W Christian( Book )

3 editions published in 1970 in English and held by 4 WorldCat member libraries worldwide

The development of governing equations and tabulation of similar solutions to the two-dimensional, laminar, compressible boundary layer with heat transfer are presented. Similar velocity and temperature profiles and global quantities such as displacement thickness, momentum thickness, form factor, etc., are presented for 116 pressure gradient-heat transfer combinations. Surface temperatures for these cases range from absolute zero (S(0) = - 1) to twice the free stream stagnation temperature (S(0) = + 1), while the streamwise pressure gradient varies from values corresponding to maximum reversed flow (beta=-0.36) to those of extremely accelerated flows (beta = 20). Results are presented at regular intervals of the parameters S(0) and beta, allowing for straight-forward comparisons between cases. Five decimal place accuracy is maintained for all results. (Author)
Research in Computational Fluid Dynamics by James S Petty( Book )

2 editions published in 1975 in English and held by 4 WorldCat member libraries worldwide

The objective of the work was the investigation of improved numerical methods for solving fluid dynamic flow problems. Accomplishments include (1) derivation of a generalized second-order two-step numerical method, (2) modification of the dispersive behavior of MacCormack's method, (3) analysis of numerical oscillations at a shock wave, (4) derivation of a selective strong diffusion technique for eliminating numerical overshoots at shock waves, and (5) development of various useful computational codes. A research contract covered the computation of several supersonic flow problems of interest
Fortran m: programming package for band matrices and vectors by James S Petty( Book )

2 editions published in 1969 in English and held by 3 WorldCat member libraries worldwide

FORTRAN M is a modified FORTRAN language designed to aid in the numerical manipulation of band matrices and vectors. In FORTRAN M, band matrices and vectors may be handled in a manner similar to ordinary matrix algebra. Two FORTRAN M packages and their use are described; one for use with an IBM 7094 II computer and one for an IBM 1620. Each package consists of a programming language, a translator program and a set of subroutines. Appendices contain an illustrative example and source lists of the translators and subroutines. (Author)
Wind tunnel tests of a new diffuser concept by James S Petty( Book )

1 edition published in 1975 in English and held by 2 WorldCat member libraries worldwide

The use of shaped cavities to improve the sidewall boundary layer quality in gas dynamic lasers by James S Petty( Book )

1 edition published in 1975 in English and held by 2 WorldCat member libraries worldwide

Theoretical Performance Limits for Non-Static Ejector Thrust Augmentors( )

1 edition published in 1980 in English and held by 1 WorldCat member library worldwide

An analytical study was performed to determine the theoretical limits on the performance of non-static ejector thrust augmentors. Idealizing assumptions were made, such as inviscid compressible working fluids, isentropic flows in inlets, diffusers, nozzles and ducts, constant pressure mixing, and thermally and calorically perfect fluids. By ignoring details of the primary flow 'pump', the performance of ejector augmentors was found in terms of three parameters (the secondary/primary mass flow ratio, a pressure parameter and a temperature parameter) in a form which was not an explicit function of the flight Mach number. It was also shown that multi-stage ejectors offered no performance improvement over ideal single-stage ejectors. Two primary 'pump' devices, a turbine engine gas generator and an isentropic compressor, were considered. With them, the Mach number dependent behavior of ideal ejectors was determined. As a result of this study, the following conclusions were drawn: (1) The performance of ideal ejector is severely degraded by increasing the primary fluid temperature, (2) the performance of ideal ejectors is degraded faster than that of ideal turbofans as the flight Mach number is increased, (3) Neither the turbine engine nor the isentropic compressor is a suitable 'pump' for ideal ejectors, except at very low Mach numbers, and (4) Ejector augmentors should be most useful for low flight speed applications; e.g., V/STOL. (Author)
Wind Tunnel Tests of a New Diffuser Concept( )

1 edition published in 1975 in English and held by 1 WorldCat member library worldwide

Tests were conducted in the ARL 3 in. by 3 in. Mach 3 wind tunnel facility of a new variable geometry diffuser concept. This gas wedge diffuser incorporates controlled large flow separation regions as compression surfaces in place of solid surfaces. Test results indicate stable flow in the device and expected pressure recovery considerably in excess of normal shock recovery
Temperature-time history of right circular cylinder in hypersonic flow( Book )

1 edition published in 1968 in English and held by 1 WorldCat member library worldwide

A solution of the problem of unsteady heat transfer to a right circular cylinder in laminar hypersonic flow was found. The solution is based upon the assumption that the heat transfer to the surface of the cylinder is proportional to the cosine of the angle measured from the stagnation point. The solution is expected to be valid within 70 degrees of the stagnation point. (Author)
The Use of Shaped Cavities to Improve the Sidewall Boundary Layer Quality in Gas Dynamic Lasers( )

1 edition published in 1975 in English and held by 1 WorldCat member library worldwide

A series of cavity shapes was tested on the sidewall of a Mach 3 high Reynolds number wind tunnel to determine the effects of the cavity and its downstream lip shape on the external flow. Various mass injection rates into the cavity were provided. Holographic interferommetry, oil flow, and a fast response surface pressure transducer were used to take data. Results indicate that a rectangular cavity with a lip shaped as a short rounded overhang least disturbs the turbulent boundary layer. Low levels of mass injection were found to have little effect on boundary layer quality
The Coming Revolution in Turbine Engine Technology( Book )

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

A major change in turbopropulsion technology development philosophy is now being pursued by the US Air Force Wright Aeronautical Laboratories (AFWAL) which will provide revolutionary advancements in overall operational performance capability for future military aircraft and aerospace weapons systems. An historical perspective illustrates the significance of the advancements being pursued, with engine thrust-to-weight used as the principal performance future-of-merit. The High Performance Turbine Engine Technologies effort, an initiative begun in 1982, is discussed. The overall goal of the HPTET effort is to provide the advanced materials, innovative structural concepts and advanced aerothermodynamics to double turbopropulsion capability by the year 2000. This is being accomplished through an aggressive, highly integrated technology development effort. The Aero Propulsion and Materials Laboratories within AFWAL are partners in this effort
Theoretical performance limits for non-static ejector thrust augmentors by James S Petty( Book )

1 edition published in 1980 in English and held by 1 WorldCat member library worldwide

Rarefied Gasdynamics( Book )

1 edition published in 1973 in English and held by 1 WorldCat member library worldwide

In a study of basic phenomena in rarefied gas flows, particular attention was given to transport phenomena. Principal items of research included studies of the rarefied Rayleigh problem, Pouiselle-like flow, anomolous heat transfer, normal shock reflection, and a state-of-the-art survey of rarefied gas-dynamics. (Author Modified Abstract)
Contouring and hidden-line algorithms [for] vector graphic displays by James S Petty( Book )

1 edition published in 1977 in English and held by 0 WorldCat member libraries worldwide

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Audience level: 0.80 (from 0.71 for Souvenirs ... to 1.00 for Contouring ...)

English (22)