Download or read book The analysis of counter rotating propeller systems written by Society of Automotive Engineers, Inc and published by . This book was released on 1985 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Analysis of Counter rotating Propeller Performance written by J. L. Colehour and published by . This book was released on 1985 with total page 13 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Analysis and Experiments for Contra rotating Propeller written by Eyal Kravitz and published by . This book was released on 2011 with total page 142 pages. Available in PDF, EPUB and Kindle. Book excerpt: Contra-rotating propellers have renewed interest from the naval architecture community, because of the recent development of electric propulsion drives and podded propulsors. Contrarotating propulsion systems have the hydrodynamic advantages of recovering part of the slipstream rotational energy which would otherwise be lost utilizing a conventional screw propeller system. The application of this type of propulsion becomes even more attractive with the increasing emphasis on fuel economy and the improvement of the propulsive efficiency. OPENPROP is an open source propeller design and analysis code that has been in development at MIT since 2007. This thesis adds another feature to the project with the off design analysis of a contra-rotating propeller set. Based on this code, the thesis offers a comparative analysis of two types of propulsors: a single propeller and a contra-rotating propeller set, which were designed for the DDG-51 destroyer class vessel. This thesis also presents the method for using these off-design analysis results to estimate ship powering requirements and fuel usage. The results show the superiority of the contra-rotating propeller over the traditional single propeller, with increased propeller efficiency of about 9% at the design point and up to 20% at some of the off design states. The annual fuel consumption savings for the DDG-51 equipped with a CRP was a total of 8.8% fuel savings.

Download or read book The Theoretical Performance of Counter rotating Propeller Systems written by Daniel Joseph Lesieutre and published by . This book was released on 1985 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Numerical Method for the Design and Analysis of Counter rotating Propellers written by Scott Charles Playle and published by . This book was released on 1984 with total page 362 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Theoretical Analysis of a Constant Speed Counter rotating Propeller written by Otto John Veiga Dunhofer and published by . This book was released on 1942 with total page 74 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book An Efficient Hybrid Scheme for the Analysis of Counter Rotating Propellers written by R. Srivastava and published by . This book was released on 1991 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Contra rotating Propellers written by H. Lindgren and published by . This book was released on 1967 with total page 41 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Advanced Turboprop Project written by Roy D. Hager and published by . This book was released on 1988 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Electrical Instrumentation of a Contra rotating Propeller Drive System written by Matthew Gates Angle and published by . This book was released on 2011 with total page 98 pages. Available in PDF, EPUB and Kindle. Book excerpt: A prototype ship propulsion device based on an electric motor that spins propellers in opposite directions was constructed and tested. The device uses a single motor to spin both propellers without a gearbox. The rotor is attached to one propeller and the stator to the other. It relies on the propellers to balance rotational speeds of the two shafts. Non-intrusive Load Monitoring (NILM) techniques were used to diagnose performance of the machine. This analysis confirmed a sensor failure in testing.

Download or read book Low speed Wind tunnel Tests of Single and Counter rotation Propellers written by Dana Morris Dunham and published by . This book was released on 1986 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book TERMINOLOGY OF DUAL AND COAXIAL COUNTER ROTATING PROPELLERS written by E-25 General Standards for Aerospace and Propulsion Systems and published by . This book was released on 1995 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Interaction Between Rotors of a Counter Rotating Propeller written by Jin-Deog Chung and published by . This book was released on 1990 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book An Experimental Investigation of the Flow Field Around a Counter rotating Propeller System Using a Laser Doppler Velocimeter written by Garry Lee Harrison and published by . This book was released on 1988 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Final Report on Study of Contra rotating Propeller Arrangements for Merchant Ships written by Gunnar A. Larsen and published by . This book was released on 1970 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Aeromechanics Analysis of Counter Rotating Coaxial Rotor Systems written by Roland Feil and published by . This book was released on 2019 with total page 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 1959 with total page 844 pages. Available in PDF, EPUB and Kindle. Book excerpt: