Download or read book An Uncertainty Assessment of Thrust Determination in Altitude Ground Test Facilities written by John A. Blevins and published by . This book was released on 2000 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book 22nd AIAA Aerodynamic Measurement Technology and Ground Testing Conference 02 2700 02 2926 written by and published by . This book was released on 2002 with total page 694 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Uncertainty Analysis and Improvement of an Altitude Test Facility for Small Jet Engines written by Yongmin Jun and published by . This book was released on 2002 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Advanced Ducted Propulsor In Flight Thrust Determination written by E-33 In Flight Propulsion Measurement Committee and published by . This book was released on 2014 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The emerging ultra high bypass ratio ADP engines, with nozzle pressure ratios significantly lower, and bypass ratios significantly higher, than those of the current turbofan engines, may present new in-flight thrust determination challenges that are not specifically covered in AIR1703. This document addresses candidate methods and the additional challenges to the thrust determination for these ADP engines.These novel challenges result in part from the fact that some large ADP engines exceed present altitude test facility capabilities. The traditional methods of nozzle coefficient extrapolation may not be most satisfactory because of the increased error due to the ADP higher ratio of gross to net thrust, and because of the increased sensitivity of in-flight thrust uncertainty at the lower fan nozzle pressure ratio. An additional challenge covered by this document is the higher sensitivity of ADP in-flight thrust uncertainty to the external flow field around the engine, and the changes in this flow field due to aircraft configuration and operations.Calibrations for in-flight thrust determination for these ADP engines may have to be based on other alternate methods. Recently, large size turbo powered simulators (TPS) of propulsion systems (including the nacelle) have been developed and thus provide a new capability for in-flight thrust determination. Furthermore Computational Fluid Dynamic (CFD) analysis may prove to be a viable supplement to ground (sea level) engine testing and sub-scale model coefficient extrapolations to cruise conditions. These recent developments are described within along with their associated error assessments.The candidate thrust methods build on the work presented in AIR1703. The document includes a comprehensive uncertainty assessment conducted per AIR1678 to identify the major thrust determination options. Fundamental to this uncertainty assessment are the influence coefficients relating in-flight thrust calculation uncertainty to the measured parameters and derived coefficients. These influence coefficients were developed from three typical public domain, generic engine cycle models.For the major potential thrust determination options, the overall thrust and airflow calibration processes are defined in detail. Road maps are included showing model, engine and flight-tests, measurements and correlations, calibration procedures and analyses. The document addresses the pros and cons of each of the major thrust determination options, including a discussion of the key assumptions and expected uncertainties. AIR5450 has been reaffirmed to comply with the SAE five-year review policy.
Download or read book Proceedings of the International Instrumentation Symposium written by and published by . This book was released on 1983 with total page 688 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1995 with total page 994 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Research development test and evaluation written by United States. Congress. House. Committee on Appropriations. Subcommittee on Department of Defense and published by . This book was released on 1984 with total page 1092 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Aerospace America written by and published by . This book was released on 1999 with total page 646 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Progress In Astronautics and Aeronautics written by Eugene E. Covert and published by AIAA. This book was released on 1985 with total page 364 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Thrust and Drag written by Eugene E. Covert and published by AIAA (American Institute of Aeronautics & Astronautics). This book was released on 1985 with total page 368 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Journal of Aircraft written by and published by . This book was released on 1996 with total page 614 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book SAE Aerospace Standards written by and published by . This book was released on 1985 with total page 892 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book AGARD Index of Publications written by North Atlantic Treaty Organization. Advisory Group for Aerospace Research and Development and published by . This book was released on 1989 with total page 526 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book NASA SP written by and published by . This book was released on 1992 with total page 512 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Measurement Uncertainty Within the Uniform Engine Test Programme written by J. P. K. Vleghert and published by . This book was released on 1989 with total page 63 pages. Available in PDF, EPUB and Kindle. Book excerpt: "This AGARDograph is an outcome of the Propulsion and Energetics Panel Working Group 15 on "Uniform Engine Testing Programme" (AGARD AR 248). During the performance of this Group it appeared that the results of some test runs were somewhat scattered, without an obvious explanation. The Group, therefore, formed a sub-Group with the task of carefully assessing the uncertainties of the measured data in order to find out whether the scattering was within the expected uncertainty or whether an explanation must be found. Since the results of the efforts of the sub-Group have some importance beyond the Working Group 15 tests, it was decided to report them in the form of an AGARDograph. In Chapter 5 the different uncertainties are estimated. The discussion on the uncertainties appears in Chapter 6 and in the following Chapter 7, ten conclusions are drawn from the efforts."
Download or read book AIAA ASME SAE ASEE 24th Joint Propulsion Conference written by and published by . This book was released on 1988 with total page 426 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book NASA Authorization for Fiscal Year 1967 written by United States. Congress. Senate. Committee on Aeronautical and Space Sciences and published by . This book was released on 1966 with total page 732 pages. Available in PDF, EPUB and Kindle. Book excerpt:
