Read Books Online and Download eBooks, EPub, PDF, Mobi, Kindle, Text Full Free.
Evaluation Of Noise Control Technology And Alternative Noise Certification Procedures For Propeller Driven Small Airplanes
Download Evaluation Of Noise Control Technology And Alternative Noise Certification Procedures For Propeller Driven Small Airplanes full books in PDF, epub, and Kindle. Read online Evaluation Of Noise Control Technology And Alternative Noise Certification Procedures For Propeller Driven Small Airplanes ebook anywhere anytime directly on your device. Fast Download speed and no annoying ads. We cannot guarantee that every ebooks is available!
Book Synopsis Evaluation of Noise Control Technology and Alternative Noise Certification Procedures for Propeller-driven Small Airplanes by : David Brown
Download or read book Evaluation of Noise Control Technology and Alternative Noise Certification Procedures for Propeller-driven Small Airplanes written by David Brown and published by . This book was released on 1982 with total page 232 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Evaluation of Noise Control Technology and Alternative Noise Certification Procedures for Propeller-Driven Small Airplanes by : David Brown
Download or read book Evaluation of Noise Control Technology and Alternative Noise Certification Procedures for Propeller-Driven Small Airplanes written by David Brown and published by . This book was released on 1982 with total page 224 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report considers the effectiveness of current noise regulations in Appendix F of FAR Part 36, examines the potential effectiveness of future technology to achieve further noise reduction, and evaluates a number of new concepts for noise certification procedures for propeller-driven small aircraft. The latter were based, in part, on results of a flight test program carried out with Cessna Aircraft Company, to evaluate the utility of takeoff noise tests and the possible use of sound exposure level as a suitable metric for noise certification of the subject aircraft. The study indicates that existing regulations have been effective in stimulating development of quieter propellers for the existing fleet of propeller-driven small aircraft. However, it does not appear economically feasible to achieve more noise reduction in most of this fleet using existing technology with the possible exceptions of some of the two-engine aircraft. However, application of future noise reduction technology, primarily for quieter propellers, should allow a reduction in current noise limits by about 6 dB and should reduce levels of the noisiest aircraft in the current fleet by as much as 10 dB. A takeoff test is appropriate for all propeller aircraft except those equipped with cruise-optimized fixed-pitch propellers. For this test, the current level flyover test appears to represent the noisiest operating condition.
Book Synopsis Recommended Notice of Proposed Rulemaking on Noise Levels for Turbojet Powered Airplanes and Large Propeller Driven Airplanes by : United States. Environmental Protection Agency
Download or read book Recommended Notice of Proposed Rulemaking on Noise Levels for Turbojet Powered Airplanes and Large Propeller Driven Airplanes written by United States. Environmental Protection Agency and published by . This book was released on 1976 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Scientific and Technical Aerospace Reports by :
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1995 with total page 426 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Propeller-driven-small Airplane Noise Certification by : Gerrit J. J. Ruijgrok
Download or read book Propeller-driven-small Airplane Noise Certification written by Gerrit J. J. Ruijgrok and published by . This book was released on 1990 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :United States. Congress. House. Committee on Science, Space, and Technology. Subcommittee on Transportation, Aviation, and Materials Publisher : ISBN 13 : Total Pages :168 pages Book Rating :4.F/5 ( download)
Book Synopsis Technology for Aircraft Noise Reduction by : United States. Congress. House. Committee on Science, Space, and Technology. Subcommittee on Transportation, Aviation, and Materials
Download or read book Technology for Aircraft Noise Reduction written by United States. Congress. House. Committee on Science, Space, and Technology. Subcommittee on Transportation, Aviation, and Materials and published by . This book was released on 1991 with total page 168 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Technical Abstract Bulletin written by and published by . This book was released on 1982 with total page 250 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Noise Levels and Data Analyses for Small Prop-Driven Aircraft by : J. Steven Newman
Download or read book Noise Levels and Data Analyses for Small Prop-Driven Aircraft written by J. Steven Newman and published by . This book was released on 1983 with total page 193 pages. Available in PDF, EPUB and Kindle. Book excerpt: During the Summer and Fall of 1982, the FAA Office of Environment and Energy, Noise Abatement Division, conducted a noise measurement program to evaluate proposed revisions of International and U.S. noise certification standards for light-weight propeller-driven aircraft. Tests were conducted using both single- and twin-engine propeller-driven light aircraft. Normally aspirated, turbo-charged, and turboprop engines were included, as were both fixed and variable pitch propellers. Takeoff noise measurements were made for eighteen aircraft. Additional measurements for nine of these aircraft (during level flight) provided sufficient data to examine the relationship of noise level versus helical tip Mach Number and engine power setting. This report presents noise measurements, aircraft position data, meteorological data, and cockpit instrument readings acquired during the test. Data analyses include: corrections to proposed noise certification reference conditions, development of Mach Number and Power Correction functions, empirical examination of sound propagation, regression of noise level versus weight (and the logarithm of weight) and correlation of acoustical intensity (AL) and acoustical dose (SEL) noise metrics. While this report concludes that a takeoff noise certification procedure is feasible and will provide consistent results for a given aircraft, it remains uncertain whether or not equal stringency (or even comparable stringency) can be achieved between the existing certification procedure and the proposed takeoff procedure.
Download or read book NASA SP. written by and published by . This book was released on 1992 with total page 654 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Noise Abatement; Technology, Public Law & Rules, FAA Noise Abatement Programs by : United States. Federal Aviation Administration
Download or read book Noise Abatement; Technology, Public Law & Rules, FAA Noise Abatement Programs written by United States. Federal Aviation Administration and published by . This book was released on 1970 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis An Assessment of Propeller Aircraft Noise Reduction Technology by :
Download or read book An Assessment of Propeller Aircraft Noise Reduction Technology written by and published by . This book was released on 1995 with total page 130 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Aeronautical Engineering written by and published by . This book was released on 1993 with total page 712 pages. Available in PDF, EPUB and Kindle. Book excerpt: A selection of annotated references to unclassified reports and journal articles that were introduced into the NASA scientific and technical information system and announced in Scientific and technical aerospace reports (STAR) and International aerospace abstracts (IAA)
Book Synopsis 1985 Small Propeller-Driven Aircraft Noise Test Program by : Kenneth E. Jones
Download or read book 1985 Small Propeller-Driven Aircraft Noise Test Program written by Kenneth E. Jones and published by . This book was released on 1985 with total page 41 pages. Available in PDF, EPUB and Kindle. Book excerpt: The international aviation community is currently reviewing noise certification procedure for small propeller-driven aircraft. Under discussion is a proposal to substitute a ground-plane microphone for the currently specified elevated microphone as a means of suppressing spectral irregularities. Given the strong low and mid-range tonal frequencies attendent to propeller-driven aircraft, the constructive/destructive interference pattern in an aircraft frequency spectrum can result in inconsistent certification test results for aircraft with different blade passage frequencies. The Federal Aviation Administration conducted several flight tests during the summer of 1985 in-order-to compare noise levels measured at four feet to ground-plane levels as a function of the blade passage frequency. The purpose of this report is to present a preliminary assessment of the data acquired during the flight tests. A more comprehensive analysis of the test results will be documented in the final report. Three flight tests were performed using a Cessna 210, Cessna Caravan I, and a (Beechcraft) U.S. NAVY T-34C. A vertical array (3.75 to 7.0 ft.) of microphones and a range of test RPMs were used in-order-to test the theoretical prediction of the ground reinforcement effect. As a secondary objective, the microphones were redeployed in horizontal arrays to test for a difference in variability between elevated and ground-plane microphones. The primary installation for the ground-plane microphone was over a 0.4 meter circular metal plate. A comparison was also made between 0.4 meter and 36 inch diameter ground plates.
Book Synopsis Monthly Catalogue, United States Public Documents by :
Download or read book Monthly Catalogue, United States Public Documents written by and published by . This book was released on 1983 with total page 1064 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Monthly Catalog of United States Government Publications by : United States. Superintendent of Documents
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 1985 with total page 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
Book Synopsis The Federal Aviation Administration Five-year Environmental Plan, 1976-1980 by : United States. Federal Aviation Administration
Download or read book The Federal Aviation Administration Five-year Environmental Plan, 1976-1980 written by United States. Federal Aviation Administration and published by . This book was released on 1976 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Aeronautical Engineering: A Continuing Bibliography, 1982 Cumulative Index by :
Download or read book Aeronautical Engineering: A Continuing Bibliography, 1982 Cumulative Index written by and published by . This book was released on 1983 with total page 768 pages. Available in PDF, EPUB and Kindle. Book excerpt:
