Download or read book User s Guide for an Interactive Personal Computer Interface for the 1998 Aeroprediction Code AP98 written by Thomas Hymer and published by . This book was released on 1998-06-01 with total page 133 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report describes interactive, user friendly, pre-processing and post-processing personal computer (P.C.) modules designed to operate with the latest version of the Naval Surface Warfare Center (NSWC) Aeroprediction Code (AP98). As part of the preprocessing input module, geometry inputs are automated by giving the user many options. By using this new software, a set of aerodynamic coefficients can be obtained on most weapon configurations in less than 15 minutes from time of initial setup to computer outputs, compared to 2-4 hours for the AP98 computer mainframe version, While the computer cost savings are modest (the AP98 executes on a large computer in less than a second), the manpower savings and productivity enhancements can be significant. Various plots of the aerodynamic coefficients are available to the user and are plotted automatically by the post-processing module. Data output is also made available to the user in the form of standard Aeroprediction output files as well as tabulated data. The User's Guide is designed to aid users of the AP98 by correlating AP98 P.C. Interface Data Inputs and the corresponding source code variable names.
Download or read book User s Guide for an Interactive Personal Computer Interface for the Aeroprediction Code written by and published by . This book was released on 1994 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report describes an interactive, user-friendly, pre- and post-processing PC modules designed to operate with the latest version of the NSWC Aeroprediction Code (AP93). As part of the preprocessing input module, geometry inputs are now automated by giving the user many options. By using this new software, a set of aerodynamic coefficients can be obtained on most weapon configurations in less than 15 minutes from time of initial setup to computer outputs, compared to 2 to 4 hours for the AP93 computer mainframe version. While the computer cost savings are modest (the AP93 executes on a large computer in less than a second), the manpower savings and productivity enhancements can be significant. The user's guide attempts to aid users of the AP93 by correlating AP93 PC Interface Data Inputs and the corresponding source code variable names. This cross-referencing information is given in italics in the discussion aerodynamic coefficients NSWCDD Aeroprediction Code, AP93, Source code variable names, AP93 PC Interface Data Inputs, Geometry inputs, Aerodynamic coefficients.
Download or read book The 2002 Version of the Aeroprediction Code written by Frankie Gale Moore and published by . This book was released on 2002 with total page 232 pages. Available in PDF, EPUB and Kindle. Book excerpt: A new version of the aeroprediction code (APC), the AP02, has been developed to address the requirements arising from advanced weapon concepts. The AP02 was formed by adding significant new technology and several productivity improvements to the previous version of the APC, the AP98. New technology added included 6 and 8 fin aerodynamics, improved nonlinear aerodynamics, improved pitch damping predictions, improved power-on base drag estimates, base-bleed effect on base drag estimation, improved axial force of nonaxisymmetric bodies and trailing-edge flap capability. Other improvements and productivity enhancements include an aerodynamic smoother, ballistic and three degree-of-freedom simulation modules as well as refinements for the pre- and post-processor for inputs and outputs of the AP02. Comparison of the predicted aerodynamics of the AP02 to AP98 and experimental data showed the AP02 to be slightly better than the AP98 in most cases that both codes would handle. However, due to the additional new technology incorporated into the AP02, many new options are available in the AP02 that are not available in the AP98. Therefore, the AP02 is more robust and, on average, is slightly more accurate than the AP98 in predicting aerodynamics of weapons.
Download or read book Technical Digest written by Naval Surface Warfare Center (U.S.). Dahlgren Division and published by . This book was released on 1998 with total page 180 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Approximate Methods for Weapon Aerodynamics written by Frankie Gale Moore and published by AIAA (American Institute of Aeronautics & Astronautics). This book was released on 2000 with total page 488 pages. Available in PDF, EPUB and Kindle. Book excerpt: Moore brings 30 years of experience in weapons development to help bridge the gap between the academic textbook and practical application. The book reviews all approaches to calculate aerodynamics, allowing engineers to see the pros and cons of each approach, setting the stage for a semiempirical approach. It contains many approximate aerodynamic methods, bringing together in a single text both linearized and nonlinear aerodynamic methods. Practicing engineers will value the books emphasis on understanding the physics involved, understanding the assumptions made to get to the approximate approaches, and showing final equations used in the solution process.
Download or read book 43rd AIAA Aerospace Sciences Meeting Exhibit written by and published by . This book was released on 2005 with total page 598 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book AIAA Aerospace Sciences Meeting and Exhibit 42nd written by and published by . This book was released on 2004 with total page 618 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book 39th AIAA Aerospace Sciences Meeting and Exhibit written by and published by . This book was released on 2001 with total page 826 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book 38th Aerospace Sciences Meeting and Exhibit written by and published by . This book was released on 2000 with total page 606 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book NSWC TR written by Naval Surface Weapons Center and published by . This book was released on 1979 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Tactical Missile Design written by Eugene L. Fleeman and published by AIAA (American Institute of Aeronautics & Astronautics). This book was released on 2006 with total page 530 pages. Available in PDF, EPUB and Kindle. Book excerpt: This textbook will provide a basis for including tactical missile design as part of the aerospace engineering curriculum, providing new graduates with the knowledge they will need in their careers.
Download or read book Iran s Rocket and Missile Forces and Strategic Options written by Anthony H. Cordesman and published by Rowman & Littlefield. This book was released on 2015-01-23 with total page 239 pages. Available in PDF, EPUB and Kindle. Book excerpt: Iran’s rocket and missile forces serve a wide range of Iranian strategic objectives. These forces range from relatively short-range artillery rockets that support its ground forces and limit the need for close air support to long-range missiles that can reach any target in the region and the development of booster systems that might give Iran the ability to strike at targets throughout Europe and even in the United States. Iran’s forces and systems are steadily evolving. While the lethality of most current systems is limited by a reliance on conventional warheads, poor accuracy, and uncertain reliability, Iran is developing steadily improved guidance systems, attempting to improve the lethality of its conventional warheads, and has at least studied arming its missiles with nuclear warheads.
Download or read book Computer Program for Calculation of Complex Chemical Equilibrium Compositions and Applications written by Bonnie J. McBride and published by . This book was released on 1996 with total page 188 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Improved Power on Base Drag Methodology for the Aeroprediction Code written by Frank G. Moore and published by . This book was released on 2001-05-01 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt: Improved methods for base pressure prediction under base bleed and rocket motor-on conditions have been developed. The base bleed method makes several refinements to the method developed by Danberg at the Army Research Laboratory in Aberdeen, Maryland. The improved rocket motor-on, base pressure prediction improves upon the method developed at the Army Missile Command in Huntsville, Alabama by Brazzel and some of his colleagues. The major refinement to the base bleed method of Danberg was to estimate the power-off value of base pressure empirically based on an extensive data base, as opposed to using computational fluid dynamics codes to predict this term. The major modifications to the power-on base pressure prediction method of Brazzel was to extend its range of applicability to high values of thrust coefficient, to Mach numbers less than 1.5, and to different afterbody shapes. In comparing the improved methods for power-on base drag prediction to experiment, it was seen that both methods gave reasonable agreement to most experimental data bases. However, more validation is needed, particularly for the combined effects of angle of attack, fins, and power-on conditions.
Download or read book Refinements in the Aeroprediction Code Based on Recent Wind Tunnel Data written by Frankie Gale Moore and published by . This book was released on 1999-12-01 with total page 130 pages. Available in PDF, EPUB and Kindle. Book excerpt: The 1998 (AP98) and prior versions of the aeroprediction code are based primarily on slender body and perturbation theories at low angle of attack and empirical constants that represent the nonlinear aerodynamics as a function of angle of attack, Mach number, aspect and taper ratio, and other missile geometric parameters. The primary data base upon which these empirical nonlinear constants were derived was based on the NASA/Tri-Service component data base taken in the 1970s. This data base was limited in body radius to wing semispan plus body radius ratios (r/s) of 0.5. A more recent data base taken by NASA and the former McDonnell Douglas Corporation, investigated other values of the parameter r/s of 0.25, 0.33 and 0.5. As a result of this new data base, the empirical constants in the AP98 were fine-tuned. This fine-tuning has shown the average normal force coefficient errors to be reduced by anywhere from 10 percent to over 40 percent on various missile configurations. The largest reductions in error were for configurations where the AP98 average accuracy was the worst. These new improved empirical constants will be a part of the next planned release of the aeroprediction code in 2002 (AP02). The AP98 average error on normal force coefficient of +/- 10 percent will therefore be somewhat better for the AP02.
Download or read book Missile Design and System Engineering written by Eugene L. Fleeman and published by AIAA Education. This book was released on 2012 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: "In his latest book, Missile Design and System Engineering, Eugene L. Fleeman comprehensively reviews the missile design and system engineering process, drawing on his decades of experience in designing and developing missile systems. Addressing the needs of aerospace engineering students and professors, systems analysts and engineers, and program managers, the book examines missile design, missile technologies, launch platform integration, missile system measures of merit, and the missile system development process. This book has been adapted from Fleeman's earlier title, Tactical Missile Design, Second Edition, to include a greater emphasis on system engineering." --Back cover.
Download or read book User s Guide for an Interactive Personal Computer Interface for the Aeroprediction Code written by Thomas C. Hymer and published by . This book was released on 1994 with total page 101 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report describes an interactive, user-friendly, pre- and post-processing PC modules designed to operate with the latest version of the NSWC Aeroprediction Code (AP93). As part of the preprocessing input module, geometry inputs are now automated by giving the user many options. By using this new software, a set of aerodynamic coefficients can be obtained on most weapon configurations in less than 15 minutes from time of initial setup to computer outputs, compared to 2 to 4 hours for the AP93 computer mainframe version. While the computer cost savings are modest (the AP93 executes on a large computer in less than a second), the manpower savings and productivity enhancements can be significant. The user's guide attempts to aid users of the AP93 by correlating AP93 PC Interface Data Inputs and the corresponding source code variable names. This cross-referencing information is given in italics in the discussion aerodynamic coefficients NSWCDD Aeroprediction Code, AP93, Source code variable names, AP93 PC Interface Data Inputs, Geometry inputs, Aerodynamic coefficients.
