Download or read book Measurement of Forces and Spindle Moments on Individual Blades of a Large hubbed Propeller written by Stephen B. Denny and published by . This book was released on 1969 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt: Axial forces, torque forces and spindle moments were measured on the individual blades of a six-bladed large-hubbed propeller. Two different propeller-blade configurations were tested, and the hydrodynamic characteristics of each were determined over wide ranges of blade pitch and advance conditions. The experimental results indicated the peak forces and moments on propeller blades during emergency operating conditions as well as blade loads and propeller efficiencies during normal cruise operation. Also, by assuming a given blade rake relative to the propeller rotation plane and by vector resolution of the blade forces determined at zero advance for various pitches, it was possible to calculate the extent of propeller sideforce capability during cyclic pitch operation. The test results show that a mission requirement for large-hubbed cyclic-pitch propellers which calls for sizeable side-force capability for maneuvering will dictate the use of large blades that are not efficient in vehicle cruise modes. Recommendations are made for further investigations of blade-configuration and blade-rake effects on both propeller side-force capability and ahead propulsion. (Author).

Download or read book U S Government Research Development Reports written by and published by . This book was released on 1970 with total page 232 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book An Inventory of Some Force Producers for Use in Marine Vehicle Control written by Michael B. Wilson and published by . This book was released on 1979 with total page 452 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report is a collection of information about the force-producing capabilities and characteristics of some hydrodynamic devices that could possibly be used for the control of submarine or surface ships. Emphasis is on the variety of concepts available for this purpose, something about the physical nature of how each device operates, and descriptions of the forces attainable. Out of all the devices considered, a preliminary judgment is formed of those devices that seem most likely to be of use in the immediate future. (Author).

Download or read book U S Government Research Development Reports written by and published by . This book was released on 1970-04 with total page 1446 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book MRIS Abstracts written by Maritime Research Information Service and published by . This book was released on 1970 with total page 638 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Bibliography of Scientific and Industrial Reports written by and published by . This book was released on 1970 with total page 1454 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Classed Subject Catalog written by Engineering Societies Library and published by . This book was released on 1970 with total page 648 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Government Reports Announcements written by and published by . This book was released on 1970 with total page 1170 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 1970 with total page 912 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Blade Spindle Moment on a Five Bladed Controllable Pitch Propeller written by Stephen B. Denny and published by . This book was released on 1972 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt: Blade spindle-moment values are presented for the operation of a five-bladed controllable-pitch propeller over a range of blade pitches and advance conditions. Spindle moment (blade turning effort) was measured on a single blade of NSRDC Model Propeller 4402 in an experimental program conducted in the 24-in. variable-pressure water tunnel. Experimental results are presented as mean spindle-moment values taken at steady-state operating conditions. No transient or time-dependent data were taken. The operating conditions investigated (1) positive pitch--steady ahead, (2) negative pitch--steady backing, and (3) negative pitch--ahead advance. The spindle moment due to hydrodynamic loading and that due to centrifugal forces were separated and nondimensionalized. The effects of Reynolds number and propeller blade cavitation are discussed briefly. (Author).

Download or read book U S Government Research and Development Reports Index written by and published by . This book was released on 1970 with total page 812 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Government Reports Index written by and published by . This book was released on 1970 with total page 820 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Government Reports Annual Index written by and published by . This book was released on 1970 with total page 1126 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Transactions The Society of Naval Architects and Marine Engineers written by Society of Naval Architects and Marine Engineers (U.S.) and published by . This book was released on 1998 with total page 662 pages. Available in PDF, EPUB and Kindle. Book excerpt: List of members in vols. 1-24, 38-54, 57.

Download or read book Marine Propellers and Propulsion written by John Carlton and published by Butterworth-Heinemann. This book was released on 2012-10-30 with total page 539 pages. Available in PDF, EPUB and Kindle. Book excerpt: The early development of the screw propeller. Propeller geometry. The propeller environment. The ship wake field, propeller performance characteristics.

Download or read book Journal of the Aeronautical Sciences written by and published by . This book was released on 1940 with total page 588 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Twenty Second Symposium on Naval Hydrodynamics written by National Research Council and published by National Academies Press. This book was released on 2000-03-02 with total page 1039 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Twenty-Second Symposium on Naval Hydrodynamics was held in Washington, D.C., from August 9-14, 1998. It coincided with the 100th anniversary of the David Taylor Model Basin. This international symposium was organized jointly by the Office of Naval Research (Mechanics and Energy Conversion S&T Division), the National Research Council (Naval Studies Board), and the Naval Surface Warfare Center, Carderock Division (David Taylor Model Basin). This biennial symposium promotes the technical exchange of naval research developments of common interest to all the countries of the world. The forum encourages both formal and informal discussion of the presented papers, and the occasion provides an opportunity for direct communication between international peers.