Read Books Online and Download eBooks, EPub, PDF, Mobi, Kindle, Text Full Free.
Theoretical Prediction Of The Flow In The Wake Of A Helicopter Rotor Part I Development Of Theory And Results Of Computations
Download Theoretical Prediction Of The Flow In The Wake Of A Helicopter Rotor Part I Development Of Theory And Results Of Computations full books in PDF, epub, and Kindle. Read online Theoretical Prediction Of The Flow In The Wake Of A Helicopter Rotor Part I Development Of Theory And Results Of Computations ebook anywhere anytime directly on your device. Fast Download speed and no annoying ads. We cannot guarantee that every ebooks is available!
Book Synopsis Theoretical Prediction of the Flow in the Wake of a Helicopter Rotor. Part I. Development of Theory and Results of Computations by : Peter Crimi
Download or read book Theoretical Prediction of the Flow in the Wake of a Helicopter Rotor. Part I. Development of Theory and Results of Computations written by Peter Crimi and published by . This book was released on 1965 with total page 93 pages. Available in PDF, EPUB and Kindle. Book excerpt: A study was performed with the objective of predicting the time-varying flow in the vicinity of a helicopter in hovering or forward flight. An analytical model was formulated which represents the rotor, its wake and the fuselage of the aircraft. The model for the wake has been simplified in a manner consistent with flow visualization studies by representing the wake as tip vortices emanating from each blade. The wake vortices are assumed to be free to convect under the influence of the blades, the fuselage and the wake itself. The fuselage has been replaced by a surface distribution of sources, the strength per unit area being determined by assuming that the fuselage is subjected to a uniform, steady free stream. A digital computer program was written which implements the model developed. Flow calculations were performed which agree well with measurements of the time average of the flow in the wake of a two-bladed rotor. Extensive calculations were then carried out which define the flow in the vicinity of a UH-1B helicopter for a range of flight conditions from hover to high-speed cruise. Upon analysis of the results, it was concluded that the model developed provides a valid representation of the unsteady flow in the vicinity of a helicopter. It was pointed out that the formulation is somewhat restrictive, in that the flow in the rotor plane and immediately adjacent to the fuselage cannot be accurately predicted. However, the suitable refinements incorporated, these regions could be investigated as well. (Author).
Book Synopsis Theoretical Prediction of the Flow in the Wake of a Helicopter Rotor by : Peter Crimi
Download or read book Theoretical Prediction of the Flow in the Wake of a Helicopter Rotor written by Peter Crimi and published by . This book was released on 1966 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt: The addendum reports the results of an extension to the study to determine the time varying flow in the vicinity of a helicopter rotor in hovering and forward flight and having a fuselage immersed in the rotor wake. The purpose of the extension was to compare two models representing the fuselage. The first fuselage model (AD-629 782 and AD-629 783), was based upon the assumption that the fuselage was immersed in a constant and uniform flow; the second model was based upon the assumption that the fuselage was immersed in a constant but nonuniform flow. Comparisons between the two models are presented. Program listings and operational information related to the programs are given. (Author).
Download or read book Technical Abstract Bulletin written by and published by . This book was released on with total page 776 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Theoretical Prediction of the Flow in the Wake of a Helicopter Rotor. Part 2. Formulation and Application of the Rotor-wake-flow Computer Program by : Peter Crimi
Download or read book Theoretical Prediction of the Flow in the Wake of a Helicopter Rotor. Part 2. Formulation and Application of the Rotor-wake-flow Computer Program written by Peter Crimi and published by . This book was released on 1965 with total page 82 pages. Available in PDF, EPUB and Kindle. Book excerpt: Two digital computer programs were prepared which direct the calculation of the time-varying flow in the vicinity of a helicopter rotor in forward or hovering flight. Fuselage interference effects are taken into account. The applicability of these programs to specific problems and procedures for their use are discussed. First, the assumptions made in constructing the mathematical model and the relationship of the model to the physical flow are outlined. In this connection, the assumptions necessary for numerical analysis and the functional structure of the programs are also given. Then, the formulations which were coded are presented. Included in the formulations are the coordinate identifications used and the definitions of program variables. Finally, the procedures for implementation of the programs are given. The relationship of input quantities to aircraft flight parameters, program accuracy and computer running time are specified. A sample calculation, including both inputs and outputs, is presented. Program listings and operational information related to the programs are given. (Author).
Book Synopsis Scientific and Technical Aerospace Reports by :
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1995 with total page 704 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Government-wide Index to Federal Research & Development Reports by :
Download or read book Government-wide Index to Federal Research & Development Reports written by and published by . This book was released on 1966-05 with total page 778 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Collection of Technical Papers by :
Download or read book A Collection of Technical Papers written by and published by . This book was released on 1975 with total page 782 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis AIAA Student Journal by : American Institute of Aeronautics and Astronautics
Download or read book AIAA Student Journal written by American Institute of Aeronautics and Astronautics and published by . This book was released on 1974 with total page 428 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Theoretical Prediction of the Flow in the Wake of a Helicopter Rotor by : Peter Crimi
Download or read book Theoretical Prediction of the Flow in the Wake of a Helicopter Rotor written by Peter Crimi and published by . This book was released on 1965 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Experimental Evaluation of a Flat Wake Theory for Predicting Rotor Inflow-wake Velocities by : John C. Wilson
Download or read book Experimental Evaluation of a Flat Wake Theory for Predicting Rotor Inflow-wake Velocities written by John C. Wilson and published by . This book was released on 1992 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Cumulative Computer Abstracts: Computer applications: CU artificial intelligence; CV linguistics, textual data processing and the liberal arts; CW life science and engineering; CX physical science and engineering; CY control engineering; CZ management, gevernment and education by : Geoffrey Knight
Download or read book Cumulative Computer Abstracts: Computer applications: CU artificial intelligence; CV linguistics, textual data processing and the liberal arts; CW life science and engineering; CX physical science and engineering; CY control engineering; CZ management, gevernment and education written by Geoffrey Knight and published by . This book was released on 1969 with total page 620 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Research in Progress written by and published by . This book was released on with total page 496 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Wakes of Lifting Propellers (rotors) in Ground Effect by : F. A. DuWaldt
Download or read book Wakes of Lifting Propellers (rotors) in Ground Effect written by F. A. DuWaldt and published by . This book was released on 1966 with total page 110 pages. Available in PDF, EPUB and Kindle. Book excerpt: The report presents the development of a wake model for a lifting propeller (rotor) in ground effect and the computational procedure used to determine the spacial distribution of wake vorticity and the induced velocity field accompanying that vorticity distribution. Sample calculations for a two-bladed rotor were carried out on an IBM 7044 computer. Locations of wake vortical elements and the associated induced velocities at selected field points are presented for advance ratios of 0, 0.02, 0.05, and 0.10 for an H/R (ratio of rotor height above ground to rotor radius) of 1.0. Also, a few results for a hovering case with H/R = 0.5 are presented. A calculated root-mean-square velocity map is compared with measured hovering data (time averaged) and good agreement is obtained in the outer half of the slipstream. The implications of computed results with respect to the flow field at a horizontal stabilizer or tail rotor are noted as examples of the use of the model. The wake vortex model used for these calculations is a distorted continuous helix emanating from each blade tip. (Author).
Book Synopsis U.S. Government Research & Development Reports by :
Download or read book U.S. Government Research & Development Reports written by and published by . This book was released on 1968-11 with total page 800 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Solar Energy Update written by and published by . This book was released on 1984 with total page 610 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Aeronautical Engineering written by and published by . This book was released on 1991 with total page 538 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Journal of the American Helicopter Society by : American Helicopter Society
Download or read book Journal of the American Helicopter Society written by American Helicopter Society and published by . This book was released on 1993 with total page 722 pages. Available in PDF, EPUB and Kindle. Book excerpt:
