Download or read book Supersonic Transport Noise Reduction Technology Summary Phase 1 Summary of GE4 SST Acoustic Suppression Research written by and published by . This book was released on 1972 with total page 485 pages. Available in PDF, EPUB and Kindle. Book excerpt: Contents: Jet Noise Suppressor Configurations and Parametric Studies (Concluded) -- Acoustic ejectors on tube and conical nozzles, and Annular plug nozzle suppressor model studies; System studies -- Choked inlet - GE4 engine, Exhust nozzle open area schedule - GE4 Engine, and Tubomachinery noise on GE4 engine; General Electric Corporate Research and Development Center's Fundamental Jet Noise Work -- Supersonic jet noise suppression results and prediction methods.

Download or read book Supersonic Transport Noise Reduction Technology Summary Phase 1 Summary of GE4 SST Acoustic Suppression Research written by and published by . This book was released on 1972 with total page 787 pages. Available in PDF, EPUB and Kindle. Book excerpt: A development program for a commercial supersonic aircraft and engines was sponsored by the Federal Aviation Administration during a five-year period from 1966 through 1971. The unique propulsion system, an afterburning turbojet, required acoustic suppression techniques to reduce its noise levels to those federally regulated for subsonic aircraft. An acoustic suppression research program was conducted by the General Electric Company to develop technology applicable to prototype and commercial supersonic engines. Primary emphasis was on jet noise suppressor development through model and engine testing. Various systems were studied including ejector pumping, simple mechanical primary and secondary suppressors, fluid injectants, multi-element tube nozzles, acoustically treated ejectors, highly segmented annular plug nozzles, etc. A research study on fundamental jet noise generation and reduction mechanisms was conducted at the General Electric Corporate Research and Development Center. In addition, investigatory tests were conducted for identification of total system noise. Application of a choked inlet and an open A sub 8 exhaust cycle were studied for noise reduction. Source turbomachinery noise generation and suppression through treatment application were investigated. This report summarizes the acoustic and aerodynamic technology with emphasis toward development of guidelines for future applications.

Download or read book Supersonic Transport Noise Reduction Technology Summary Phase I written by W. S. Fisk and published by . This book was released on 1972 with total page 529 pages. Available in PDF, EPUB and Kindle. Book excerpt: Studies were performed to conclude and refine elements of work begun under the Supersonic Transport Engine Development Program. Three programs were completed in the area of turbomachinery noise: the screening of proposed materials for high temperature acoustic treatment and the extension of suppression design methods to the flows and temperatures typical of turbine exhaust conditions; investigations of multi-stage compressor tip treatment using multiple circumferential grooves; and the prediction and demonstration of the effects of increased turbine axial spacing on noise generation. Detailed analytical studies were made of data from conic and suppressor-type jets, both cold and hot flows, selected from the GE4/SST program. Correlations of aero/acoustic interrelationships were made, and elements of the noise generation mechanisms showing promise for future advanced concepts were identified. Scaling of small model jet noise data to engine size was established, using scaling techniques and accounting for site differences and the added sources present in engine data. (Author).

Download or read book Aeroacoustics of Flight Vehicles Noise control written by Harvey H. Hubbard and published by . This book was released on 1991 with total page 452 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Aeroacoustics of Flight Vehicles written by Harvey H. Hubbard and published by . This book was released on 1991 with total page 456 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Notices of Changes in Classification Distribution and Availability written by and published by . This book was released on 1977 with total page 428 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book NASA Reference Publication written by and published by . This book was released on 1991 with total page 460 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Digest Defense Documentation Center written by Defense Documentation Center (U.S.) and published by . This book was released on 1964 with total page 232 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book 36th AIAA ASME SAE ASEE Joint Propulsion Conference Exhibit 2000 3150 2000 3199 written by and published by . This book was released on 2000 with total page 642 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Supersonic Transport written by Langley Research Center and published by . This book was released on 1960 with total page 104 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book SST Technology Follow On Program Phase I a Summary of the SST Jet Noise Suppression Test Program written by and published by . This book was released on 1972 with total page 540 pages. Available in PDF, EPUB and Kindle. Book excerpt: Supersonic aircraft require propulsion systems that are significantly different from those for present subsonic aircraft. The higher jet velocity of the supersonic aircraft engines will generate more noise during the actual takeoff run than conventional jet transport engines. An applied research program was conducted at The Boeing Company from February 1966 through March 1971 to investigate jet nozzle systems which will suppress jet noise levels from the supersonic transport with minimal thrust loss. These efforts applied to the two prototype supersonic transports being developed at that time as well as the commercial version of the SST that was to follow. The research program indicated that 12 to 20 PNdB noise suppression can be attained with less than 10% thrust loss by using multielement jet nozzle concepts. This report summarizes the test results pertaining to suppressor nozzle noise and thrust characteristics.

Download or read book Supersonic Transport Development Environmental Impact Statement written by United States. Office of Supersonic Transport Development and published by . This book was released on 1970 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book United States Supersonic Transport Program written by United States. Federal Aviation Agency. Office of Supersonic Transport Development and published by . This book was released on 1965 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Power for Flight written by Jeremy R. Kinney and published by Government Printing Office. This book was released on 2018-02-15 with total page 318 pages. Available in PDF, EPUB and Kindle. Book excerpt: The NACA and aircraft propulsion, 1915-1958 -- NASA gets to work, 1958-1975 -- The shift toward commercial aviation, 1966-1975 -- The quest for propulsive efficiency, 1976-1989 -- Propulsion control enters the computer era, 1976-1998 -- Transiting to a new century, 1990-2008 -- Toward the future

Download or read book The Supersonic Transport written by and published by . This book was released on 1959 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Collection of Technical Papers written by and published by . This book was released on with total page 840 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Clusters and Nanomaterials written by Y. Kawazoe and published by Springer Science & Business Media. This book was released on 2013-03-09 with total page 351 pages. Available in PDF, EPUB and Kindle. Book excerpt: Synthesizing specific clusters as a component of useful nanostructures or controlling them as an assembly of nanocomposites is the ultimate aim. In order to understand how to synthesize individual clusters or to investigate its properties, a variety of first-principles and empirical calculations and related computer simulations have been performed alongside numerous experiments.