Download or read book Effects of Ambient Conditions the Gravity Field and Struts on Flows Over Ventilated Hydrofoils written by R. Altmann and published by . This book was released on 1967 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt: A series of experiments was conducted to determine the effects on foil performance of changes in cavity pressure and submergence depth. With fully-ventilated foils, drag and lift coefficients were found to be proportional to (1 + sigma sub cav), as predicted by theory. For base-ventilated foils a different and unexpected dependence of drag and lift on the cavity cavitation number was observed. Lift and drag on fully ventilated hydrofoils were also found to be almost unaffected by changes in submergence depth over the range of practical interest, as predicted by theory. However, the magnitudes of the measured forces were found to be smaller than predicted values. A simple analysis was made of the possible effects of the gravity field on foil performance. Further support for the idea that the gravity field may exert considerable influence was obtained through a series of tests in which ventilated hydrofoils were operated at both positive and negative angles of attack. Measurements were also made to determine the effects of struts on ventilated hydrofoil cavity contours. Indirectly, these tests also assessed the magnitude of the strut-induced downwash. A considerable downwash was found to exist, having a profound effect on the cavity shape over the hydrofoil. Recent linearized theory on the magnitude of this strut-induced downwash correlates very well with the measurements. (Author).

Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1976 with total page 1004 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 NBS Special Publication written by and published by . This book was released on 1918 with total page 1164 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Report written by United States. National Bureau of Standards and published by . This book was released on 1968 with total page 336 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Hydraulic Research in the United States and Canada written by United States. National Bureau of Standards and published by . This book was released on 1968 with total page 1046 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Hydraulic Research in the United States 1968 written by United States. National Bureau of Standards and published by . This book was released on 1969 with total page 342 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Current Hydraulic Laboratory Research in the United States written by and published by . This book was released on 1968 with total page 334 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Naval Hydrodynamics written by and published by . This book was released on 1981 with total page 924 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 1968 with total page 468 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book U S Government Research Development Reports written by and published by . This book was released on 1968 with total page 1054 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book U S Government Research and Development Reports written by and published by . This book was released on 1968 with total page 1074 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 1971 with total page 948 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 1968 with total page 774 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book International Committee Reports Introductory Remarks Discussions and Conclusions written by and published by . This book was released on 1971 with total page 880 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 1968 with total page 804 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book U S Government Research and Development Reports Index written by and published by . This book was released on 1968 with total page 1000 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.