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Book Effect of Steady state Pressure Distortion on Inlet Flow to a High bypass ratio Turbofan Engine

Download or read book Effect of Steady state Pressure Distortion on Inlet Flow to a High bypass ratio Turbofan Engine written by Ronald H. Soeder and published by . This book was released on 1982 with total page 58 pages. Available in PDF, EPUB and Kindle. Book excerpt: Experiments were conducted to determine the effects of steady-state circumferential-pressure distortion on inlet flow and internal engine performance of a high-bypass-ratio turbofan engine. To measure these effects, flow-angle, static-pressure, and total-pressure instrumentation was placed between the rotatable distortion-generator assembly and the engine inlet. In addition, both static-pressure and total-pressure were recorded at the fan exit and compressor inlet and exit. Three circumferential screens were separately mounted on the rotatable assembly. For all configurations data were recorded at each of twelve 30 deg increments of assembly rotation. Experiments were conducted with fan speeds (corrected to station 2 temperature) of 80 or 90 percent of rated condition (7005 rpm) and Reynolds number indices of 0.2 or 0.5. Yaw angle increased between the distortion-generating assembly and the engine inlet. A change in Reynolds number index (RNI) has only a slight effect and a change in speed had no effect on yaw angle distribution. The flow angle was largest in the hub region of the engine inlet.

Book Effect of Steady State Pressure Distortion on Inlet Flow to a High Bypass Ratio Turbofan Engine

Download or read book Effect of Steady State Pressure Distortion on Inlet Flow to a High Bypass Ratio Turbofan Engine written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-08-14 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt: Static pressure and total pressure distributions were measured in the inlet duct upstream of the engine inlet and within the fan and compressor of a YTF34 turbofan engine. In addition, the free stream flow angle was measured between the distortion generator and the engine inlet. Distortions were generated using three screen configurations with extents of 90 deg or 180 deg. The screens were mounted on a rotatable screen assembly. Reynolds number index upstream of the distortion device was maintained at 0.5 or 0.2, and engine fan speed corrected to station 2 temperature was maintained at 80 or 90 percent of rated condition (7005 rpm). Flow angle was nearly constant near the distortion device and increased as flow approached the engine inlet. The largest flow angle occurred in the hub region of the engine inlet. Static pressure distortion along the inlet duct increased exponentially as the flow approached the engine. Both static pressure and total pressure distortions were attenuated between engine inlet and compressor exit. Soeder, R. H. and Bobula, G. A. Glenn Research Center NASA-TM-82964, E-1383, NAS 1.15:82964, AVRADCOM-TR-81-C-27 RTOP 505-32-6A...

Book Effect of Steady State Inlet Temperature Distortion on the Engine Compressor Flow

Download or read book Effect of Steady State Inlet Temperature Distortion on the Engine Compressor Flow written by W. Koschel and published by . This book was released on 1987 with total page 19 pages. Available in PDF, EPUB and Kindle. Book excerpt: A prediction model for the effects of a steady state temperature distortion on the overall performance of a multistage engine compressor is presented. In contrast to the well-known parallel compressor model, this method takes into account the circumferential interaction of the distorted and undistorted compressor flow. An extensive experimental program has been carried out on a single-spool jet engine with steady-state inlet temperature and pressure distortion tests. The experimental set-up is briefly described. Detailed results of the flow measurements obtained at the compressor inlet and exit and at the compressor interstage positions are presented and discussed. The experimental results support the validity of the prediction model developed within this project.

Book Inlet Total Pressure Distortion Considerations for Gas Turbine Engines

Download or read book Inlet Total Pressure Distortion Considerations for Gas Turbine Engines written by S-16 Turbine Engine Inlet Flow Distortion Committee and published by . This book was released on 2011 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Applied Mechanics Reviews

Download or read book Applied Mechanics Reviews written by and published by . This book was released on 1980 with total page 932 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Scientific and Technical Aerospace Reports

Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1987 with total page 1126 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.

Book NASA Technical Paper

Download or read book NASA Technical Paper written by and published by . This book was released on 1985 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Engine Response to Distorted Inflow Conditions

Download or read book Engine Response to Distorted Inflow Conditions written by and published by . This book was released on 1987 with total page 320 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Inventory of Energy Research and Development  1973 1975

Download or read book Inventory of Energy Research and Development 1973 1975 written by Oak Ridge National Laboratory and published by . This book was released on 1976 with total page 1458 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book NASA Technical Memorandum

Download or read book NASA Technical Memorandum written by and published by . This book was released on 1978 with total page 356 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book NASA Technical Paper

    Book Details:
  • Author : United States. National Aeronautics and Space Administration
  • Publisher :
  • Release : 1977
  • ISBN :
  • Pages : 600 pages

Download or read book NASA Technical Paper written by United States. National Aeronautics and Space Administration and published by . This book was released on 1977 with total page 600 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Monthly Catalog of United States Government Publications

Download or read book Monthly Catalog of United States Government Publications written by United States. Superintendent of Documents and published by . This book was released on 1960 with total page 1786 pages. Available in PDF, EPUB and Kindle. Book excerpt: February issue includes Appendix entitled Directory of United States Government periodicals and subscription publications; September issue includes List of depository libraries; June and December issues include semiannual index.