Download or read book Theoretical Investigation of Ducted Propeller Aerodynamics written by Theodore Theodorsen and published by . This book was released on 1960 with total page 276 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Theoretical Investigation of Ducted Propeller Aerodynamics written by TH. THEODORSEN and published by . This book was released on 1960 with total page 1 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Theoretical Investigation of Ducted Propeller Aerodynamics written by J. Sinacori and published by . This book was released on 1961 with total page 124 pages. Available in PDF, EPUB and Kindle. Book excerpt: The performances of VTOL aircraft using ducted and free propellers are compared The comparison is based on existing light VTOL aircraft equipped with ducted propellers and on the same aircraft using free propellers computed for this purpose. The free propellers appear to provide better aircraft performance, especially higher flight speed. An appraisal and analysis of VTOL aircraft based on the existing VTOL testbeds forms the second part of this volume. Summaries of design particulars and performance re given in graphical and tabular form. The special purpose vehicles, such as the flying jeeps, aerial platforms and aerodynes, are treated as a separate group. Particular performance data of the various VTOL aircraft are collected in an appendix.
Download or read book Theoretical Investigation of Ducted Propeller Aerodynamics written by TH. THEODORSEN and published by . This book was released on 1961 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt: Problems of the ducted fan and its application in VTOL aircraft are investigated. General considerations are presented for the design of vertical take-off aircraft. The ideal loading of single rotation propellers in a circular duct is examined. The flow field was derived for a non-uniform sink distribution in a circular disk and for a cylindrical non-uniform vortex sheet. The velocity field and forces on a flat plate due to a cylindrical jet with an elliptical cross-section were also derived. Experimental data are given in tabular and graphic form on the interference effect of a jet on the VTOL aircraft. Design requirements of deflection vanes are discussed with the results of an experimental investigation on a cascade of circular arc sections. (Author).
Download or read book Theoretical Investigation of Ducted Propeller Aerodynamics written by J. SINACORI and published by . This book was released on 1961 with total page 106 pages. Available in PDF, EPUB and Kindle. Book excerpt: The performances of VTOL aircraft using ducted and free propellers are compared The comparison is based on existing light VTOL aircraft equipped with ducted propellers and on the same aircraft using free propellers computed for this purpose. The free propellers appear to provide better aircraft performance, especially higher flight speed. An appraisal and analysis of VTOL aircraft b sed on the existing VTOL testbeds forms the second part of this volume. Summaries of design particulars and performance re given in graphical and tabular form. The special purpose vehicles, such as the flying jeeps, aerial platforms and aerodynes, are treated as a separate group. Particular performance data of the various VTOL aircraft are collected in an appendix. (Author).
Download or read book Theoretical Investigation of Ducted Propeller Aero dynamics written by TH. THEODORSEN and published by . This book was released on 1960 with total page 1 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Theoretical Study of Ducted Propeller Blade Loading Duct Stall and Interference written by M. R. Mendenhall and published by . This book was released on 1966 with total page 171 pages. Available in PDF, EPUB and Kindle. Book excerpt: A theoretical analysis was made to predict the performance of an isolated ducted propeller, with emphasis on real propeller and frictional effects. The various tasks performed are the following. An analysis was developed to predict, for a specified propeller and duct configuration, the performance in axial flow. The quantities predicted include propeller and duct thrust, propeller inflow velocity, and radial distribution of propeller loading and angle of attack. As a special case of this analysis, a method was developed to design a propeller for uniform loading in axial flow for a given duct. Two FORTRAN IV computer programs were developed for these methods and are available from the sponsor. A relatively simple and rapid method for estimating the flow conditions for onset of duct stall was developed. The effects of radial and circumferential variations of blade loading on ducted propeller performance were estimated. Finally, the effects of mutual interference between pairs of ducted propellers were investigated. (Author).
Download or read book Theoretical Investigation of Dynamic Stability Derivatives of Ducted Propellers written by Anthony R. Kriebel and published by . This book was released on 1963 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Wind tunnel Investigation of a 7 foot diameter Ducted Propeller written by Kenneth W. Mort and published by . This book was released on 1967 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book U S Government Research Reports written by and published by . This book was released on 1964 with total page 1076 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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 Theoretical Investigation of Static Coefficients Stability Derivatives and Interference for Ducted Propellers written by A. R. Kriebel and published by . This book was released on 1964 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt: The force and moment coefficients at angle of attack and their dynamic pitching derivatives are predicted by potential flow analysis for an isolated ducted propeller. The analysis is based upon Fourier expansion of the vorticity distribution and makes use of the previous theoretical results for ring wings at angle of attack and ducted propellers in axial flow. The present results extend those derived in detail in (AD-403 146) for a short thin cylinder surrounding a uniformly loaded actuator disk. Although the actuator disk assumption is retained, the effects of large duct chord-to-diameter ratio, and the effects of duct camber, taper, and thickness are shown on the duct coefficients and their pitching derivatives. (Author).
Download or read book Ducted Propellers a Review and Description of Current Investigation written by Ronald J. Weetman and published by . This book was released on 1970 with total page 78 pages. Available in PDF, EPUB and Kindle. Book excerpt: The paper describes the past theoretical and experimental work on ducted propellers. Also included is a discussion of the limitations of these past investigations. Since the ducted propeller is used parimarily for low speed applications (i.e., deep sea submersibles, tugboats and VTOL's) the theoretical and experimental development for low speed and static conditions is obviously needed. A description of the current and proposed theoretical and experimental investigation for these conditions is presented. (Author).
Download or read book Aerodynamics of the Propeller written by Fritz Weinig and published by . This book was released on 1948 with total page 546 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Theoretical Investigation of Dynamic Stability Derivatives of Ducted Propellers written by Anthony R. Kriebel and published by . This book was released on 1963 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Theoretical Investigation of the Aerodynamic Interference Induced by Cruise and Lift Fans on Transport type Aircraft written by M. R. Mendenhall and published by . This book was released on 1971 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Unsteady Propeller Forces Fundamental Hydrodynamics and Unconventional Propulsion written by Ralph D. Cooper and published by . This book was released on 1971 with total page 1700 pages. Available in PDF, EPUB and Kindle. Book excerpt:
