Download or read book Cockpit Noise Intensity written by Jerry V. Tobias and published by . This book was released on 1968 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Cockpit Noise Intensity written by Jerry V. Tobias and published by . This book was released on 1968 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Cockpit Noise and Speech Interference Between Crewmembers written by and published by . This book was released on 1989 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Active Control Of Aircraft Cabin Noise written by Ignazio Dimino and published by World Scientific. This book was released on 2015-07-13 with total page 304 pages. Available in PDF, EPUB and Kindle. Book excerpt: 'The text is well written and supported by clear and useful illustrations. This would be a useful textbook for postgraduate or advanced undergraduate studies and would also make a good introductory text for engineers moving into the field. The literature survey and bibliography provide a useful starting point for further study.'The Aeronautical JournalActive Control of Aircraft Cabin Noise provides a bridge to fill the gap between robust control theory and practical applications of active noise control systems in aircraft cabin. Both the possibilities and limitations of structural solutions to enhance aircraft cabin comfort by reducing interior noise are discussed supported by a wide range of topics in engineering, from finite element modeling to multichannel adaptive feed-forward control, usually dealt separately in the literature. In addition, experimental noise attenuation results with passengers' subjective perceptions predicting the effects of cabin noise on comfort assessments is examined. Theoretical and experimental research is detailed enough to capture the interest of the non-expert in engineering who wishes to have an overview of some of the active noise control applications in aircraft. This book may be used as an advanced textbook by graduate and undergraduate students in aeronautical engineering, and would be an authoritative resource book for research into the subject.
Download or read book Auditory Effects of Noise on Air crew Personnel written by Jerry V. Tobias and published by . This book was released on 1972 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Aircraft Noise written by Max H. O'Connell and published by . This book was released on 1960 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt: All persons associated with the operation of military aircraft are exposed at one time or another to hazardous noise. In past years attention was directed only to the noise problems encountered by aircrew members, namely, possible noise-induced hearing loss, excessive fatigue, and difficulty of voice communication. Air-Force-wide adoption of the turbojet-powered aircraft has prompted the giving of special attention to the hazardous noise environment of men working on and near aircraft on the ground. While aircrew members of some aircraft are exposed to high-intensity noise levels, the aircraft ground maintenance crews receive most of the hazardous noise exposures.
Download or read book Noise Environs and Helmet Performance for the P 1127 V STOL Aircraft written by Henry C Sommer and published by . This book was released on 1968 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of the evaluation was (1) to measure the acoustic noise environment in the cockpit of the United Kingdom Hawker Siddeley P-1127 V/STOL aircraft that would serve as an acoustic guideline for cockpit noise levels of aircraft being contemplated or under construction, and (2) to determine the acoustic attenuation of various Air Force flight helmets in the inventory or being contemplated for Air Force inventory items. Cockpit sound pressure levels in the P-1127 V/STOL aircraft at various engine rpm settings were measured. The cockpit noise environment at maximum engine rpm was reproduced in the laboratory and used to obtain objective attenuation data for three Air Force flight helmet/liner configurations. Measurement of real-ear attenuation at threshold were also accomplished on the helmet/liner configurations. (Author).
Download or read book Comparison of Speech Intelligibility in Cockpit Noise Using Sph 4 Flight Helmet with and Without Active Noise Reduction written by National Aeronautics and Space Adm Nasa and published by Independently Published. This book was released on 2018-11 with total page 46 pages. Available in PDF, EPUB and Kindle. Book excerpt: Active Noise Reduction (ANR) is a new technology which can reduce the level of aircraft cockpit noise that reaches the pilot's ear while simultaneously improving the signal to noise ratio for voice communications and other information bearing sound signals in the cockpit. A miniature, ear-cup mounted ANR system was tested to determine whether speech intelligibility is better for helicopter pilots using ANR compared to a control condition of ANR turned off. Two signal to noise ratios (S/N), representative of actual cockpit conditions, were used for the ratio of the speech to cockpit noise sound pressure levels. Speech intelligibility was significantly better with ANR compared to no ANR for both S/N conditions. Variability of speech intelligibility among pilots was also significantly less with ANR. When the stock helmet was used with ANR turned off, the average PB Word speech intelligibility score was below the Normally Acceptable level. In comparison, it was above that level with ANR on in both S/N levels. Chan, Jeffrey W. and Simpson, Carol A. Unspecified Center NAS2-12425; NAS2-13188; RTOP 505-61-51...
Download or read book Aviation Medical Reports written by United States. Office of Aviation Medicine and published by . This book was released on 1968 with total page 568 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Airline Pilot Questionnaire Study on Cockpit Visibility Problems written by George Leroy Pigman and published by . This book was released on 1950 with total page 248 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Literature Search written by National Library of Medicine (U.S.) and published by . This book was released on 1972 with total page 440 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fourth Aircraft Interior Noise Workshop written by and published by . This book was released on 1992 with total page 340 pages. Available in PDF, EPUB and Kindle. Book excerpt: The fourth in a series of NASA/SAE Interior Noise Workshops was held on May 19 and 20, 1992 at the Graf Zeppelin Haus in Friedrichshafen, Germany. The theme of the workshop was new technology and applications for aircraft interior noise with emphasis on source noise prediction; cabin noise control, including active and passive methods; and cabin interior noise test procedures. This report is a compilation of the presentations made at the meeting which addressed the above issues.
Download or read book Transportation Noise and Noise from Equipment Powered by Internal Combustion Engines written by Wyle Laboratories and published by . This book was released on 1972 with total page 434 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Human Factors in the Training of Pilots written by Jefferson M. Koonce and published by CRC Press. This book was released on 2002-05-23 with total page 320 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this educational yet entertaining text, Jeff Koonce draws on his 44 years of pilot experience and 31 years as a professor of psychology and human factors engineering in addressing the questions of how to apply sound human factors principles to the training of pilots and to one's personal flying. The author discusses principles of human factors, and how they can be utilized in pilot training and evaluation. With a conversational tone, he also relates anecdotes, jokes, and truisms collected during his time as a flight instructor. He takes a positive approach to the subject, focusing on safety and good practice rather than on accidents. While problem areas are acknowledged, and the book points out how certain problems may result in mishaps, the author avoids focusing on individual accidents. Human Factors in the Training of Pilots is a must for pilots wanting to make a systematic study of the human factors issues behind safe flying, and for instructors or serious students needing an authoritative text.
Download or read book Noise Hearing Damage and Fatigue in General Aviation Pilots written by and published by . This book was released on 1972 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Summary of XB 70 Airplane Cockpit Environmental Data written by Kirk S. Irwin and published by . This book was released on 1969 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt: Thermal, acoustical, and acceleration environments of XB-70 airplane crew compartment in airworthiness tests.
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...
