Download or read book Propeller Blade Root Flow Investigation written by J-D. Ruedi and published by . This book was released on 1996 with total page 115 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Computational Analysis of the Flow Around the Propeller Blade Root with a Viscous Flow Solver written by J. Bosschers and published by . This book was released on 2004 with total page 42 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Propeller Blade Root Cavitation Inception Tests written by M.X. van Rijsbergen and published by . This book was released on 2004 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Design of Propeller Blade Roots written by G. Cordes and published by . This book was released on 1942 with total page 622 pages. Available in PDF, EPUB and Kindle. Book excerpt: Predicated on the assumption of certain normal conditions for engine and propeller, simple expressions for the static and dynamic stresses of propeller blade roots are evolved. They, in combination with the fatigue strength diagram of the employed material, afford for each engine power one certain operating point by which the state of stress serving as a basis for the design of the root is defined. Different stress cases must be analyzed, depending on the vibration tendency of engine and use of propeller. The solution affords an insight into the possible introduction of different size classes of propeller.

Download or read book Propeller Blade Stall Flutter Investigation Presentation of experimental data and summary of analytical work written by William Gordon Brady and published by . This book was released on 1958 with total page 128 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book An Experimental Investigation of Viscous Aspects of Propeller Blade Flow written by Stuart D. Jessup and published by . This book was released on 1989 with total page 249 pages. Available in PDF, EPUB and Kindle. Book excerpt: An experimental investigation of the laminar/turbulent flow in the vicinity of a rotating propeller blade was conducted using laser doppler velocimetry. Details of the flow were measured to assess the viscous features relative to classical potential theory. Three-dimensional velocity component measurements were made of the propeller blade boundary layer and wake using laser doppler velocimetry with a phase averaging technique to account for blade rotation. The propeller blade flow was characterized by streamwise and radial boundary layer profiles. Laminar boundary layers were initiated at the leading edge with transition to turbulence occurring at the mid-chord of the blade. The midspan streamwise boundary layer resembled typical two-dimensional behavior. The radial boundary layer exhibited large outward flow near the wall in regions of laminar flow which was reduced after transition.

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 Study of Root Inflow for a Propeller Blade of Infinite Length written by Cristina Garcia-Duffy and published by . This book was released on 2005 with total page 130 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Two dimensional Potential Flow Investigation of the Interaction Between Propeller Blade and Ship Skeg for a Single screw Ship written by William Alan Hockberger and published by . This book was released on 1967 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Investigation of the Effect of a Tip Modification and Thermal De icing Air Flow on Propeller Performance written by Blake W. Corson and published by . This book was released on 1946 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt: Aerodynamic tests of a 12.208-foot-diameter two-blade hollow steel propeller before and after alteration for thermal de-icing have been made in the Langley 16-foot high-speed tunnel to determine the effect of the alterations on propeller efficiency. The propeller, which had Clark Y blade sections, was tested on a 2000-horsepower dynamometer at blade angles ranging from about 25 degrees to 60 degrees at the 42-inch radius and at airspeeds varying from 100 to 425 miles per hour.

Download or read book Ship Resistance and Propulsion written by Anthony F. Molland and published by Cambridge University Press. This book was released on 2011-08-08 with total page 569 pages. Available in PDF, EPUB and Kindle. Book excerpt: Written by experts in the ship design field, this book provides a comprehensive approach to evaluating ship resistance and propulsion.

Download or read book A Study of the Flow Through a Vertical Axis Propeller written by J. A. McKillop and published by . This book was released on 1965 with total page 61 pages. Available in PDF, EPUB and Kindle. Book excerpt: The application of a three dimensional flow visualisation technique to the study of the flow pattern of a vertical axis propeller is described. Photographs of the streamlines encountered by a blade throughout a complete orbital cycle are shown and analysed to yield the inflow vector. The results are compared with blade normal force time histories obtained by strain gage readings from one blade root. The computed thrust is finally compared with existing performance data. (Author).

Download or read book Development of Experimental Inversion and Simulation Techniques to Study Propeller Blade Response to Inflow Distortion written by and published by . This book was released on 1995 with total page 109 pages. Available in PDF, EPUB and Kindle. Book excerpt: Marine propellers usually operate either in the non-uniform wake of a submarine or skewed flow under the stern of a surface ship. Therefore, the flow upstream of marine propeller blades is characterized by irregular patterns which are caused by various mean flow distortions due to the boundary layer growth on the hull of the ship, turbulent viscous wakes of upstream bodies (e.g., Hyun and Patel (1991)) or obstacles (e.g., Groves et al (1992)). Whether the inflow to the propeller is steady or unsteady, uniform or non-uniform, the flow over and downstream of the blades is unsteady. This unsteadiness can be due to a separation bubble near the leading edge of the blade, separated flow from the blade before the trailing edge, as well as tip and hub vortices. The unsteady flow over the blades produces unsteady hydrodynamic forces (i.e., excitations) which result in unwanted vibrations and noise. Inflow nonuniformities give rise to tonal and narrow band noise centered around the blade passing harmonics. Additional broad band signatures are superimposed due to turbulence-trailing edge interaction. Highly non-uniform and asymmetric inflows further exaggerate these effects. (MM).

Download or read book Experimental Investigation of Air cooled Turbine Blades in Turbojet Engine written by Vernon L. Arne and published by . This book was released on 1951 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Naval Research Reviews written by and published by . This book was released on 1995 with total page 594 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.

Download or read book Power Based Study of Boundary Layer Ingestion for Aircraft Application written by Peijian Lv and published by Springer Nature. This book was released on 2022-09-14 with total page 138 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents research on Boundary Layer Ingestion (BLI). BLI is an aircraft-engine integration technique that aims at integrating the aircraft and the propulsion system such that the overall aircraft fuel consumption can be reduced. In this research, theoretical analysis suggests that the minimization of total power consumption should be used as a design criterion for aircraft utilizing BLI rather than focusing on the minimization of drag. Numerical simulations are performed, and the simulation results are processed using the PBM to support the theoretical analysis. Furthermore, an experimental study is carried out with a focus on the power conversion processes involved for a propulsor operating in the wake. Stereoscopic PIV is employed in order to visualize the flow and understand the physics. The so-called Power-based Method is used to quantify the power conversion mechanisms. The results prove that the dominant mechanism responsible for the efficiency enhancement is due to the utilization of body wake energy by the wake ingesting propeller. In short, the importance of wake energy flow rate in understanding the BLI phenomenon is highlighted. This book will be useful for researchers in the field of aircraft propulsion, aircraft aerodynamics, and airframe propulsion integration.