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Book Wind Tunnel Tests with a Spinning Model of a 5 calibre Army navy Spinner at Mach 0 5 to 3 0

Download or read book Wind Tunnel Tests with a Spinning Model of a 5 calibre Army navy Spinner at Mach 0 5 to 3 0 written by and published by . This book was released on 2001 with total page 236 pages. Available in PDF, EPUB and Kindle. Book excerpt: Most shells & bullets that are fired from a gun barrel have to be gyroscopically stabilized during flight by a high axial spin rate and this must be made in conjunction with a proper ratio of their axial & lateral inertia moments. For wind tunnel tests related to spin stabilized projectiles, it is very desirable to be able to spin the model, which makes it possible to evaluate the aerodynamic effects induced by the spinning motion and also to study the influence of the spin rate on other aerodynamic coefficients. This memorandum describes wind tunnel tests made in a trisonic wind tunnel with a spinning model of a 5-calibre Army-Navy spinner, a standard model configuration used to qualify & normalize wind tunnel test results. These tests were primarily intended to measure the spin damping & the Magnus force and also the influence of the spin rate on other standard aerodynamic coefficients, in order to evaluate the results that can be obtained with a specially designed electric-motor spin rig apparatus and its controller.

Book Supersonic Magnus Measurements of the 10 Caliber Army Navy Spinner Projectile with Wrap around Fins

Download or read book Supersonic Magnus Measurements of the 10 Caliber Army Navy Spinner Projectile with Wrap around Fins written by Frank J. Regan and published by . This book was released on 1970 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt: A research configuration was formed by attaching wraparound fins in a cruciform arrangement to a 10-caliber Army-Navy spinner projectile. This configuration was tested in a supersonic tunnel to get the Magnus force and moment, as well as the normal force and pitching moment. Model spin rate was generated by means of fin cant.

Book AIAA 27th Aerospace Sciences Meeting

Download or read book AIAA 27th Aerospace Sciences Meeting written by and published by . This book was released on 1989 with total page 490 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Wind Tunnel Free flight Testing Techniques for Planar Motion Employed at the Naval Ordnance Laboratory

Download or read book Wind Tunnel Free flight Testing Techniques for Planar Motion Employed at the Naval Ordnance Laboratory written by A Leonas and published by . This book was released on 1967 with total page 124 pages. Available in PDF, EPUB and Kindle. Book excerpt: The report is a summary of the planar motion free-flight testing techniques and procedures employed at the Naval Ordnance Laboratory, White Oak, Maryland. It is intended primarily to aid in standardizing the testing procedure and as a guide for further development in this field. (Author).

Book Wind Tunnel Tests of a 5 Scale Semi conical A3J 1 Inlet Model at Mach Numbers of 0 9 1 2 1 4 1 6 1 8 and 2 05

Download or read book Wind Tunnel Tests of a 5 Scale Semi conical A3J 1 Inlet Model at Mach Numbers of 0 9 1 2 1 4 1 6 1 8 and 2 05 written by Marion R. Bottorff and published by . This book was released on 1957 with total page 66 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Wind Tunnel Magnus Testing of a Canted Fin Or Self rotating Configuration

Download or read book Wind Tunnel Magnus Testing of a Canted Fin Or Self rotating Configuration written by Anders S. Platou and published by . This book was released on 1971 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt: A source of error in the wind tunnel measurement of Magnus forces and moments on a self-rotating configuration has been detected, and means of overcoming the error are presented. The error is due to a normal force interaction brought about by the roll of the angle of attack plane which in turn is due to a small yaw angle of the model at zero angle of attack. The error is not a balance interaction error. The error can completely mask the true Magnus characteristics and can lead the experimenter to wrong conclusions. Although a computed correction may be made to existing data, the best method of eliminating the error is to obtain balance readings with and without spin at each angle of attack of interest.

Book Reports on Wind Tunnel Experiments in Aerodynamics

Download or read book Reports on Wind Tunnel Experiments in Aerodynamics written by Jerome Clarke Hunsaker and published by . This book was released on 1916 with total page 120 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Wind Tunnel Investigation of the Forces and Moments Acting on a Cruciform Finned Model with Fixed and Freely Spinning Tail Assemblies at a Mach Number of 2 0

Download or read book Wind Tunnel Investigation of the Forces and Moments Acting on a Cruciform Finned Model with Fixed and Freely Spinning Tail Assemblies at a Mach Number of 2 0 written by William E. DeGrafft and published by . This book was released on 1963 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt: Spinning cruciform finned models were tested to determine the normal force, pitching moment, side force and yawing moment characteristics at a Mach number of 2.0 and a free stream Reynolds number of 3.98 x 10 to the 6th power per foot. The models had fin cant angles of 0, 2 and 4 degrees. In addition the models with the 2 and 4 degree fin cant angles were constructed so that the fin assembly could rotate either with the body as a single unit or rotate freely with the body locked. The tests showed that for the spin rates developed during the test, the normal force and pitching moments for all models are independ ent of spin rate and fin cant angle. The yawing moment is reduced on the average by a factor of 0.76 if the fins are allowed to rotate freely while the body is held stationary. (Author).

Book Validation of the Wright Patterson Vertical Wind Tunnel

Download or read book Validation of the Wright Patterson Vertical Wind Tunnel written by James W. Hickman and published by . This book was released on 1980 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt: A spin capability evaluation of the Wright-Patterson vertical wind tunnel was completed using a model of the Bell X-5. The X-5 model was previously spin tested in the NASA vertical wind tunnel at Langley AFB, Va. The study compared results obtained at the NASA-Langley vertical wind tunnel with the test results obtained at the Wright-Patterson vertical wind tunnel. The Langley results were used as the basis for this evaluation. Information was available on spin characteristics of the model with respect to various control surface configurations and recovery attempts using control deflections. The spin tests revealed a stable equilibrium spin and recovery, where applicable, could be established and observed for each corresponding stable equilibrium spin and recovery that was observed at Langley. (Author).

Book One fifth Scale Inlet Model Wind Tunnel Test Report

Download or read book One fifth Scale Inlet Model Wind Tunnel Test Report written by GENERAL ELECTRIC CO CINCINNATI OHIO ADVANCED ENGINE AND TECHNOLOGY Dept and published by . This book was released on 1965 with total page 610 pages. Available in PDF, EPUB and Kindle. Book excerpt: Tabulated data are presented for the low speed tests (Mach 0 to 0.2).

Book Wind Tunnel Test Techniques

Download or read book Wind Tunnel Test Techniques written by Colin Britcher and published by Academic Press. This book was released on 2023-10-20 with total page 672 pages. Available in PDF, EPUB and Kindle. Book excerpt: Wind Tunnel Test Techniques: Design and Use at Low and High Speeds with Statistical Engineering Applications provides an up-to-date treatment of the topic. Beginning with a brief history of wind tunnels and its types and uses, the book goes on to cover subsonic, supersonic and hypersonic wind tunnel design and construction, calibration, boundary corrections, flow quality assessment, pressure surveys, and dynamic testing. It also focuses on wind tunnel facilities, making it useful for both the designer and operator. Engineers and graduate students in aerospace, automotive and similar programs will find this book useful in their work with experimental aerodynamics, gas dynamics, facility design and performance. - Deals with a broad range of flow speeds in wind tunnels, from low speed to high speed - Provides a discussion of similarity laws as well as material on statistical analysis - Includes coverage on facility-to-facility and facility-to-CFD correlation - Presents advanced topics such as cryogenic wind tunnels, ground simulation in automotive testing, and propulsion testing

Book Wind tunnel Experiments on Divergence of Forward swept Wings

Download or read book Wind tunnel Experiments on Divergence of Forward swept Wings written by Rodney H. Ricketts and published by . This book was released on 1980 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt: