Download or read book Subsonic and Transonic Aerodynamics of a Wraparound Fin Configuration written by R. H. White and published by . This book was released on 1985 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt: Subsonic and transonic aerodynamic data for a wraparound fin configuration are presented. Free-flight aeroballistic tests to obtain these data were conducted at atmospheric pressure and over a Mach number range of 0.6 to 1.35. The aerodynamic coefficients and derivatives presented in this paper were extracted from the position-attitude-time histories of the experimentally measured trajectories using nonlinear numerical integration data reduction routines. Results of this analysis indicate that a dynamic instability exists above Mach 1.0 and is related to an out-of-plane side moment which is dependent of the pitch angle. The stability boundaries associated with this side moment are mapped. Designers should consider this moment whenever wraparound fins are used. Keywords include: WAF(Wraparound Fins), Aerodynamic stability, Side moment, Pitch-roll resonance, Folding fins, and Submunitions.
Download or read book Aerodynamics of Missiles Wih Offset Fin Configurations written by Gregg L. Abate and published by . This book was released on 1989 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Characterization of the Flowfield Near a Wrap Around Fin at Supersonic Speeds written by Carl P. Tilmann and published by . This book was released on 1998 with total page 166 pages. Available in PDF, EPUB and Kindle. Book excerpt: A wall-mounted semi-cylindrical model fitted with a single wrap- around in (WAF) has been investigated numerically and experimentally, with the objective of characterizing the mean and turbulent flowfield near a WAF in a supersonic flowfield. Numerical and experimental results are used to determine the nature of the flowfield and quantify the effects of fin curvature on the character of the flow near WAFs. This research has been motivated by the need to identify possible sources of a high-speed rolling moment reversal observed in sub-scale flight tests. Detailed mean flow and turbulence measurements were obtained in the AFIT Mach 3 wind tunnel using conventional probes and cross-wire hot-film anemometry at a series of stations upstream of and aft of the fin shock/boundary layer interaction. Hot-film anemometry results showed the turbulence intensity and Reynolds shear stress in the fuselage boundary layer to be far greater on the concave side of the fin than on the convex side. Mean flow was also obtained in the AFIT Mach 5 wind tunnel using conventional pressure probes. Numerical results were also obtained at the test conditions employing the algebraic eddy viscosity model of Baldwin and Lomax. Correlation with experimental data suggests that the calculations have captured the flow physics involved in this complicated flowfield. The calculations, corroborated by experimental results, indicate that a vortex exists in the fin/body juncture region on the convex side of the fin. This feature is not captured by the oft- used inviscid methods, and can greatly influence the pressure loading on the fin near the root.
Download or read book Aerodynamic Testing in a Free flight Spark Range written by G. L. Winchenbach and published by . This book was released on 1997 with total page 172 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1988 with total page 720 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.
Download or read book Preliminary Investigation of Subsonic and Transonic Longitudinal Aerodynamic Characteristics of a Variable sweep Airplane Configuration Having Externally Mounted Engines written by and published by . This book was released on 1962 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Subsonic transonic Configuration Aerodynamics written by and published by . This book was released on 1980 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Transonic Aerodynamic Characteristics of a Model of a Proposed Six engine Hull type Seaplane Designed for Supersonic Flight written by Dewey E. Wornom and published by . This book was released on 1960 with total page 42 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Atmospheric Flight Mechanics Conference Held August 1997 at New Orleans Louisiana written by American Institute of Aeronautics and Astronautics and published by AIAA (American Institute of Aeronautics & Astronautics). This book was released on 1997 with total page 838 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume is the proceedings of the Atmospheric Flight Mechanics Conference, which took place in New Orleans, August 1997. It focuses on the technical progress, issues and challenges associated with atmospheric flight. Technical papers address stability and control, flying qualities (including one session dedicated to pilot-induced oscillations), unsteady and vortex aerodynamics, system and parameter identification, aircraft flight dynamic re-entry and aero assist technologies, and reusable launch vehicles.
Download or read book Aerodynamics of Wrap around Fins in Supersonic Flow written by and published by . This book was released on 2005 with total page 73 pages. Available in PDF, EPUB and Kindle. Book excerpt: Existing supersonic fin theory has been modified to compute the pressure distribution over Wraparound Fin (WAF). Evvard's theory has been used to calculate the pressure loading due to Angle-of-Attack (AoA) on a WAF by including fin curvature as a variable in the definition of zones of influence. Evvard's theory uses the intersections of the fin surface and the Mach cones originating from the leading edge discontinuities to split the fin surface into regions of influence. For a planar fin, the intersections are linear; however, the intersections on a curved fin form curved lines. By redefining the Mach lines to account for fin curvature and using an empirically derived induced AoA, the application of Evvard's theory can be extended to accurately compute the unique aerodynamic characteristic of WAFs.
Download or read book A Collection of Technical Papers written by and published by . This book was released on 1986 with total page 556 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Government Reports Announcements Index written by and published by . This book was released on 1985-07 with total page 384 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Applied Mechanics Reviews written by and published by . This book was released on 1987 with total page 934 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Subsystem Integration for Tactical Missiles SITM and Design and Operation of Unmanned Air Vehicles DOUAV written by and published by . This book was released on 1996 with total page 376 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book NASA SP written by and published by . This book was released on 1986 with total page 544 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Monthly Catalog of United States Government Publications written by and published by . This book was released on 1978 with total page 1756 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Monthly Catalogue United States Public Documents written by and published by . This book was released on 1978 with total page 832 pages. Available in PDF, EPUB and Kindle. Book excerpt:
