Read Books Online and Download eBooks, EPub, PDF, Mobi, Kindle, Text Full Free.
Study Of The Supersonic Propeller
Download Study Of The Supersonic Propeller full books in PDF, epub, and Kindle. Read online Study Of The Supersonic Propeller ebook anywhere anytime directly on your device. Fast Download speed and no annoying ads. We cannot guarantee that every ebooks is available!
Book Synopsis Study of the Supersonic Propeller by : Jean Fabri
Download or read book Study of the Supersonic Propeller written by Jean Fabri and published by . This book was released on 1953 with total page 640 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this paper a propeller having all sections operating at supersonic speeds is designated a supersonic propeller regardless of flight speed. Analyses assume subsonic flight speeds but very high rotational speeds. A very elementary analysis of the efficiency of a jet-propeller system is presented. A propeller analysis based on conventional vortex blade element theory is presented and reduced to a single point method which leads to an expression for optimum advance ratio in terms of hub-tip diameter ratio and airfoil fineness ratio. An expression for propeller efficiency in terms of advance ratio, hub-tip diameter ratio, and airfoil thickness ratio is also presented. Use is made of theoretical airfoil characteristics at supersonic speeds. A study of blade section interference, blade shock and expansion fields, at supersonic section speeds is presented. An example taken indicates that an efficiency of seventy percent can be obtained with a propeller having a tip Mach number of 2.3.
Book Synopsis Noise Survey of a Full-scale Supersonic Turbine-driven Propeller Under Static Conditions by : Max C. Kurbjun
Download or read book Noise Survey of a Full-scale Supersonic Turbine-driven Propeller Under Static Conditions written by Max C. Kurbjun and published by . This book was released on 1957 with total page 742 pages. Available in PDF, EPUB and Kindle. Book excerpt: Overall sound-pressure levels and frequency spectra of the noise emitted from a full-scale, 7.2-foot-diameter, 3, 500 rpm, three-blade, supersonic propeller mounted on a turbine-powered airplane have been obtained under static conditions at stations about the propeller at a 100-foot radius.
Book Synopsis Flight Investigation of a Supersonic Propeller on a Propeller Research Vehicle at Mach Numbers to 1.01 by : Jerome B. Hammack
Download or read book Flight Investigation of a Supersonic Propeller on a Propeller Research Vehicle at Mach Numbers to 1.01 written by Jerome B. Hammack and published by . This book was released on 1957 with total page 43 pages. Available in PDF, EPUB and Kindle. Book excerpt: A description is given of an NACA propeller research vehicle, the McDonnell XF-88B airplane, capable of testing governing propellers up to and slightly above Mach numbers of 1.0. Altitudes up to 40,000 feet are attainable. Propellers up to 10 feet in diameter can be tested with a maximum power input of 2,500 brake horsepower at two rotational speeds. The airplane is instrumented to obtain aerodynamic and structural data.
Book Synopsis Preliminary Design Study of a Centrifugal Jet Engine With a Supersonic Propeller. by : Arthur D Struble
Download or read book Preliminary Design Study of a Centrifugal Jet Engine With a Supersonic Propeller. written by Arthur D Struble and published by Hassell Street Press. This book was released on 2021-09-09 with total page 240 pages. Available in PDF, EPUB and Kindle. Book excerpt: This work has been selected by scholars as being culturally important and is part of the knowledge base of civilization as we know it. This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. To ensure a quality reading experience, this work has been proofread and republished using a format that seamlessly blends the original graphical elements with text in an easy-to-read typeface. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
Book Synopsis Aerodynamic Tip Theory of a Supersonic Propeller by : Cornell University. Graduate School of Aeronautical Engineering
Download or read book Aerodynamic Tip Theory of a Supersonic Propeller written by Cornell University. Graduate School of Aeronautical Engineering and published by . This book was released on 1958 with total page 168 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Aerodynamic Design of Supersonic Propellers from Structural Considerations by : Jerome B. Hammack
Download or read book The Aerodynamic Design of Supersonic Propellers from Structural Considerations written by Jerome B. Hammack and published by . This book was released on 1952 with total page 682 pages. Available in PDF, EPUB and Kindle. Book excerpt: The aerodynamic design of propellers from considerations of centrifugal force is presented. A solution is obtained for the span wise distribution of cross-sectional area required to attain constant centrifugal stress over most of the blade.
Book Synopsis Theoretical Investigation of the Performance of a Supersonic Propeller by : Morton A. Slavin
Download or read book Theoretical Investigation of the Performance of a Supersonic Propeller written by Morton A. Slavin and published by . This book was released on 1948 with total page 67 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Advanced Turboprop Project by : Roy D. Hager
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:
Book Synopsis A Parametric Investigation of an Existing Supersonic Relative Tip Speed Propeller Noise Model by : James H. Dittmar
Download or read book A Parametric Investigation of an Existing Supersonic Relative Tip Speed Propeller Noise Model written by James H. Dittmar and published by . This book was released on 1977 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Shock Wave Approach to the Noise of Supersonic Propellers by :
Download or read book A Shock Wave Approach to the Noise of Supersonic Propellers written by and published by . This book was released on 1981 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Index of NACA Technical Publications by : United States. National Advisory Committee for Aeronautics
Download or read book Index of NACA Technical Publications written by United States. National Advisory Committee for Aeronautics and published by . This book was released on 1953 with total page 274 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Transonic and Supersonic Propeller Design Philosophy by : Roy Hall Murray
Download or read book Transonic and Supersonic Propeller Design Philosophy written by Roy Hall Murray and published by . This book was released on 1954 with total page 110 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Performance Analysis of Two Early NACA High Speed Propellers with Application to Civil Tiltrotor Configurations by : National Aeronautics and Space Adm Nasa
Download or read book Performance Analysis of Two Early NACA High Speed Propellers with Application to Civil Tiltrotor Configurations written by National Aeronautics and Space Adm Nasa and published by . This book was released on 2018-11-19 with total page 156 pages. Available in PDF, EPUB and Kindle. Book excerpt: The helicopter industry is vigorously pursuing development of civil tiltrotors. One key to efficient high speed performance of this rotorcraft is prop-rotor performance. Of equal, if not greater, importance is assurance that the flight envelope is free of aeroelastic instabilities well beyond currently envisioned cuise speeds. This later condition requires study at helical tip Match numbers well in excess of 1.0. Two 1940's 'supersonic' propeller experiments conducted by NACA have provided an immensely valuable data bank with which to study prop-rotor behavior at transonic and supersonic helical tip Mach numbers. Very accurate 'blades alone' data were obtained by using nearly an infinite hub. Tabulated data were recreated from the many thrust and power figures and are included in two Appendices to this report. This data set is exceptionally well suited to re-evaluating classical blade element theories as well as evolving computational fluid dynamic (CFD) analyses. A limited comparison of one propeller's experimental results to a modem rotorcraft CFD code is made. This code, referred to as TURNS, gives very encouraging results. Detailed analysis of the performance data from both propellers is provided in Appendix A. This appendix quantifies the minimum power required to produce usable prop-rotor thrust. The dependence of minimum profile power on Reynolds number is quantified. First order compressibility power losses are quantified as well and a first approximation to design air-foil thickness ratio to avoid compressibility losses is provided. Appendix A's results are applied to study high speed civil tiltrotor cruise performance. Predicted tiltrotor performance is compared to two turboprop commercial transports. The comparison shows that there is no fundamental aerodynamic reason why the rotorcraft industry could not develop civil tiltrotor aircraft which have competitive cruise performance with today's regional, turboprop airlines. Recommendations for future study t...
Book Synopsis Analysis of the Wind Data and Estimation of the Resultant Doses from the Supersonic Anemometer by : Shze Jer Hu
Download or read book Analysis of the Wind Data and Estimation of the Resultant Doses from the Supersonic Anemometer written by Shze Jer Hu and published by . This book was released on 1989 with total page 49 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :National Aeronautics and Space Administration (NASA) Publisher :Createspace Independent Publishing Platform ISBN 13 :9781725814394 Total Pages :34 pages Book Rating :4.8/5 (143 download)
Book Synopsis Summary and Recent Results from the NASA Advanced High Speed Propeller Research Program by : National Aeronautics and Space Administration (NASA)
Download or read book Summary and Recent Results from the NASA Advanced High Speed Propeller Research Program written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-08-20 with total page 34 pages. Available in PDF, EPUB and Kindle. Book excerpt: Advanced high-speed propellers offer large performance improvements for aircraft that cruise in the Mach 0.7 to 0.8 speed regime. The current status of the NASA research program on high-speed propeller aerodynamics, acoustics, and aeroelastics is described. Recent wind tunnel results for five 8- to 10-blade advanced models are compared with analytical predictions. Test results show that blade sweep was important in achieving net efficiencies near 80 percent at Mach 0.8 and reducing near-field cruise noise by dB. Lifting line and lifting surface aerodynamic analysis codes are under development and some initial lifting line results are compared with propeller force and probe data. Some initial laser velocimeter measurements of the flow field velocities of an 8-bladed 45 deg swept propeller are shown. Experimental aeroelastic results indicate that cascade effects and blade sweep strongly affect propeller aeroelastic characteristics. Comparisons of propeller near-field noise data with linear acoustic theory indicate that the theory adequate predicts near-field noise for subsonic tip speeds but overpredicts the noise for supersonic tip speeds. Potential large gains in propeller efficiency of 7 to 11 percent at Mach 0.8 may be possible with advanced counter-rotation propellers. Mitchell, G. A. and Mikkelson, D. C. Glenn Research Center NASA-TM-82891, E-1269, NAS 1.15:82891 RTOP 535-03-12...
Book Synopsis Research Abstracts by : United States. National Advisory Committee for Aeronautics
Download or read book Research Abstracts written by United States. National Advisory Committee for Aeronautics and published by . This book was released on 1951 with total page 568 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis An Asymptotic Theory of Supersonic Propeller Noise by : Edmane Envia
Download or read book An Asymptotic Theory of Supersonic Propeller Noise written by Edmane Envia and published by . This book was released on 1992 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:
