Download Flight Test Measurements From The Tu 144ll Structure Cabin Noise Experiment full books in PDF, epub, and Kindle. Read online Flight Test Measurements From The Tu 144ll Structure Cabin Noise Experiment ebook anywhere anytime directly on your device. Fast Download speed and no annoying ads. We cannot guarantee that every ebooks is available!
Author : Stephen Anthony Rizzi
Publisher :
ISBN 13 :
Total Pages : 208 pages
Book Rating : 4.11/5 ( download)
Download or read book Flight Test Measurements From The Tu- 144LL Structure/Cabin Noise Experiment written by Stephen Anthony Rizzi and published by . This book was released on 2000 with total page 208 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : National Aeronautics and Space Administration (NASA)
Publisher : Createspace Independent Publishing Platform
ISBN 13 : 9781721090983
Total Pages : 108 pages
Book Rating : 4.83/5 ( download)
Download or read book Flight Test Measurements from the Tu-144ll Structure/Cabin Noise Follow-On Experiment written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-06-13 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt: This follow-on flight experiment on the TU-144LL Supersonic Flying Laboratory, conducted during the period September 1998 to April 1999, was a continuation of previous Structure/Cabin Noise Experiment 2.1. Data was obtained over a wide range of altitudes and Mach numbers. Measured were: turbulent boundary layer pressure fluctuations on the fuselage over its length; structural response on skin panels using accelerometers; and flow direction over three windows using 'flow cones'. The effect of steps in the flow was also measured using two window blank pairs; each pair bridged by a plate which created small sharp forward and aft facing steps. The effect of transducer flushness with the exterior surface was also measured during flight. Height test points were chosen to cover much of the TU-144's flight envelope, as well as to obtain as large a unit Reynolds number range as possible at various Mach numbers: takeoff, subsonic, transonic, and supersonic cruise conditions up to Mach 2. Data on engine runups and background noise were acquired on the ground. The data in the form of time histories of the acoustic signals, together with auxiliary data and basic MATLAB processing modules, are available on CD-R disks. Rizzi, Stephen A. and Rackl, Robert G. and Andrianov, Eduard V. Langley Research Center RTOP 537-06-37-20
Author : Stephen A. Rizzi
Publisher :
ISBN 13 :
Total Pages : 108 pages
Book Rating : 4.29/5 ( download)
Download or read book Flight Test Measurements From The Tu-144LL Structure/Cabin Noise Follow-On Experiment written by Stephen A. Rizzi and published by . This book was released on 2000 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt: This follow-on flight experiment on the TU-144LL Supersonic Flying Laboratory, conducted during the period September 1998 to April 1999, was a continuation of previous Structure/Cabin Noise Experiment 2.1. Data was obtained over a wide range of altitudes and Mach numbers. Measured were: turbulent boundary layer pressure fluctuations on the fuselage over its length; structural response on skin panels using accelerometers; and flow direction over three windows using "flow cones". The effect of steps in the flow was also measured using two window blank pairs; each pair bridged by a plate which created small sharp forward and aft facing steps. The effect of transducer flushness with the exterior surface was also measured during flight. Flight test points were chosen to cover much of the TU-144's flight envelope, as well as to obtain as large a unit Reynolds number range as possible at various Mach numbers: takeoff, subsonic, transonic, and supersonic cruise conditions up to Mach 2. Data on engine runups and background noise were acquired on the ground. The data in the form of time histories of the acoustic signals, together with auxiliary data and basic MATLAB processing modules, are available on CD-R disks.
Author :
Publisher :
ISBN 13 :
Total Pages : 1064 pages
Book Rating : 4.12/5 ( download)
Download or read book NASA's Contributions to Aeronautics: Flight environment, operations, flight testing, and research written by and published by . This book was released on 2010 with total page 1064 pages. Available in PDF, EPUB and Kindle. Book excerpt: Two-volume collection of case studies on aspects of NACA-NASA research by noted engineers, airmen, historians, museum curators, journalists, and independent scholars. Explores various aspects of how NACA-NASA research took aeronautics from the subsonic to the hypersonic era.-publisher description.
Author : Dmitry Yu. Strelets
Publisher : Springer Nature
ISBN 13 : 9811990107
Total Pages : 220 pages
Book Rating : 4.06/5 ( download)
Download or read book Recent Developments in High-Speed Transport written by Dmitry Yu. Strelets and published by Springer Nature. This book was released on 2023-04-10 with total page 220 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book describes the basic concepts and various aspects of creating a new generation supersonic passenger aircraft. It presents the fundamental and applied problems essential to the design of aircraft of this type. Solutions to the problems of reducing supersonic boom, environmental noise, harmful emissions, increasing the efficiency of propulsion systems, and the general concept and certification are described. The development of high-speed transport, as a means of improving mobility and quality of life, is a relevant task for research teams in many countries. The publication includes selected articles from the 1st International Conference on High-Speed Transport Development, organized by the Moscow Aviation Institute (National Research University) which, by participating in many research and commercial projects (including international ones) has accumulated a lot of competencies sufficient to act as a platform for knowledge exchange in this field. The target audience of this book are researchers working on high-speed transport, postgraduate students, as well as any individuals willing to broaden their knowledge of high-speed aircraft.
Author :
Publisher :
ISBN 13 :
Total Pages : 1066 pages
Book Rating : 4.68/5 ( download)
Download or read book NASA's Contributions to Aeronautics, Volume 2, Flight Environment ..., NASA/SP-2010-570-Vol 2, 2010, * written by and published by . This book was released on 2011 with total page 1066 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 948 pages
Book Rating : 4.59/5 ( download)
Download or read book Monthly Catalog of United States Government Publications written by and published by . This book was released on 2000 with total page 948 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 82 pages
Book Rating : 4.01/5 ( download)
Download or read book NASA Langley Highlights 1998 written by and published by . This book was released on 1999 with total page 82 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : National Aeronautics and Space Administration (NASA)
Publisher : Createspace Independent Publishing Platform
ISBN 13 : 9781722362119
Total Pages : 46 pages
Book Rating : 4.11/5 ( download)
Download or read book Measurement Resolution of Noise Directivity Patterns from Acoustic Flight Tests written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-07-07 with total page 46 pages. Available in PDF, EPUB and Kindle. Book excerpt: The measurement resolution of noise directivity patterns from acoustic flight tests was investigated. Directivity angle resolution is affected by the data reduction parameters, the aircraft velocity and flyover altitude, and by deviations of the aircraft from the desired flight path. Equations are developed which determine bounds for the lateral and longitudinal directivity angle resolution as a function of the nominal directivity angle. The equations are applied to a flight test data base and the effects of several flight conditions and data reduction parameters on the directivity angle resolution are presented. The maximum directivity angle resolution typically occurs when the aircraft is at or near the overhead position. In general, directivity angle resolution improves with decreasing velocity, increasing altitude, increasing sampling rate, decreasing block size, and decreasing block averages. Deviations from the desired ideal flight path will increase the resolution. For the flight experiment considered in this study, an average of two flyovers were required at each test condition to obtain an acceptable flight path. The ability of the pilot to maintain the flight track improved with decreasing altitude, decreasing velocity, and practice. Due to the prevailing wind conditions, yaw angles of as much as 20 deg were required to maintain the desired flight path. Conner, David A. Langley Research Center RTOP 505-63-51-07...
Author : National Aeronautics and Space Administration (NASA)
Publisher : Createspace Independent Publishing Platform
ISBN 13 : 9781723470400
Total Pages : 194 pages
Book Rating : 4.06/5 ( download)
Download or read book Uhb Demonstrator Interior Noise Control Flight Tests and Analysis written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-07-23 with total page 194 pages. Available in PDF, EPUB and Kindle. Book excerpt: The measurement and analysis of MD-UHB (McDonnell Douglas Ultra High Bypass) Demonstrator noise and vibration flight test data are described as they relate to passenger cabin noise. The analyses were done to investigate the interior noise characteristics of advanced turboprop aircraft with aft-mounted engines, and to study the effectiveness of selected noise control treatments in reducing passenger cabin noise. The UHB Demonstrator is an MD-80 test aircraft with the left JT8D engine replaced with a prototype UHB engine. For these tests, the UHB engine was a General Electric Unducted Fan, with either 8x8 or 10x8 counter-rotating propeller configurations. Interior noise level characteristics were studied for several altitudes and speeds, with emphasis on high altitude (35,000 ft), high speed (0.75 Mach) cruise conditions. The effectiveness of several noise control treatments was evaluated based on cabin noise measurements. The important airborne and structureborne transmission paths were identified for both tonal and broadband sources using the results of a sound intensity survey, exterior and interior noise and vibration data, and partial coherence analysis techniques. Estimates of the turbulent boundary layer pressure wavenumber-frequency spectrum were made, based on measured fuselage noise levels. Simpson, M. A. and Druez, P. M. and Kimbrough, A. J. and Brock, M. P. and Burge, P. L. and Mathur, G. P. and Cannon, M. R. and Tran, B. N. Unspecified Center AIRCRAFT COMPARTMENTS; AIRCRAFT NOISE; FLIGHT TESTS; NOISE REDUCTION; SOUND TRANSMISSION; TURBOPROP ENGINES; MD 80 AIRCRAFT; NOISE SPECTRA; PRESSURE DISTRIBUTION; TURBOPROP AIRCRAFT; TURBULENT BOUNDARY LAYER; VIBRATION TESTS...
