Download or read book A Study of Acoustic Monitoring of the Gun Probe System written by Walter S Nordquist (Jr) and published by . This book was released on 1967 with total page 63 pages. Available in PDF, EPUB and Kindle. Book excerpt: A single array acoustic sensor system has been used to detect the various acoustic events associated with a series of seven firings of the Atmospheric Sciences Laboratory gun probe at White Sands Missile Range, New Mexico. The acoustic events detected included launch, grenade explosion, and acoustic signals associated with the descent of various parts of the projectile. The results are presented by type of event and individual round and are compared to the available radar and optical tracking data. The results indicate that an acoustic system can be used to locate certain events occurring at horizontal ranges of fifteen to twenty miles with accuracies of a few hundred feet. Some of these events are of a nature which neither radar nor optical systems can 'recognize.' (Author).
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1995 with total page 704 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Cannons of Bull written by Dr. Raymond E. March and published by Dorrance Publishing. This book was released on 2022-04-22 with total page 362 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Cannons of Bull: McGill/HARP Reach for the Sky By: Dr. Raymond E. March and Dr. Donald L. Mordell The Cannons of Bull recounts in a fascinating, insider fashion the remarkable story of the McGill High-Altitude Research Project. Also known as HARP. An exciting endeavor to use cannon instead of rockets to launch vehicles into space. Unique, comprehensive and authoritative.
Download or read book U S Government Research Development Reports written by and published by . This book was released on 1968-05 with total page 706 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A STUDY IN ACOUSTIC DIRECTION FINDING written by Walter S Nordquist (Jr) and published by . This book was released on 1967 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt: The azimuth to a gun probe launcher position from an acoustic array located approximately six miles distant was determined from the acoustic data associated with a series of seven firings. Application of a meteorological correction technique using rawinsonde data indicates that the azimuth may be corrected up to forty percent of the total error if the rawinsonde sounding is taken at the time of firing and decreases from that value at a rate which is a function of the stability of the air mass involved. (Author).
Download or read book U S Government Research and Development Reports Index written by and published by . This book was released on 1968 with total page 582 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Government Reports Index written by and published by . This book was released on 1973 with total page 1132 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Feasibility Study for an Improved Acoustic Probe for Road Roughness Profiling written by James M. Lawther and published by . This book was released on 1981 with total page 96 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Government Reports Annual Index written by and published by . This book was released on 1990 with total page 1312 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Acoustic Probe for Solid Gas Liquid Suspensions written by and published by . This book was released on 1999 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt: The proposed research will develop an acoustic probe for monitoring particle size and volume fraction in slurries in the absence and presence of gas. The goals are to commission and verify the probe components and system operation, develop theory for the forward and inverse problems for acoustic wave propagation through a three phase medium, and experimentally verify the theoretical analysis. The acoustic probe will permit measurement of solid content in gas-solid-liquid waste slurries in tanks across the DOE complex.
Download or read book Government Reports Announcements written by and published by . This book was released on 1973 with total page 1210 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Bibliography of Scientific and Industrial Reports written by and published by . This book was released on 1968 with total page 1012 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Surveillance Towed Array Sensor System Low Frequency Active SURTASS LFA Sonar written by and published by . This book was released on 2001 with total page 440 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Continuous System Acoustic Monitoring written by and published by American Water Works Association. This book was released on 2011 with total page 73 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Energy Research Abstracts written by and published by . This book was released on 1994 with total page 1032 pages. Available in PDF, EPUB and Kindle. Book excerpt: Semiannual, with semiannual and annual indexes. References to all scientific and technical literature coming from DOE, its laboratories, energy centers, and contractors. Includes all works deriving from DOE, other related government-sponsored information, and foreign nonnuclear information. Arranged under 39 categories, e.g., Biomedical sciences, basic studies; Biomedical sciences, applied studies; Health and safety; and Fusion energy. Entry gives bibliographical information and abstract. Corporate, author, subject, report number indexes.
Download or read book Acoustic Probe for Solid Gas Liquid Suspension written by L. L. Tavlarides and published by . This book was released on 2003 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt: The primary objective of the research project during the first funding period was to develop an acoustic probe to measure volume percent solids in solid-liquid slurries in the presence of small amounts of gas bubbles. This problem was addressed because of the great need for a non-invasive, accurate and reliable method for solids monitoring in liquid slurries in the presence of radiolytically generated gases throughout the DOE complex. These measurements are necessary during mobilization of salts and sediments in tanks, transport of these slurries in transfer lines to processing facilities across a site, and, in some instances, during high level waste processing. Although acoustic probes have been commonly used for monitoring flows in single-phase fluids (McLeod, 1967), their application to monitor two-phase mixtures has not yet fully realized its potential. A number of investigators in recent years have therefore been involved in developing probes for measuring the volume fractions in liquid solid suspensions (Atkinson and Kytomaa, 1993; Greenwood et al., 1993; Martin et al., 1995) and in liquid-liquid suspensions (Bonnet and Tavlarides, 1987; Tavlarides and Bonnet, 1988, Yi and Tavlarides, 1990; Tsouris and Tavlarides, 1993, Tsouris et al., 1995). In particular, Atkinson and Kytomaa (1993) showed that the acoustic technique can be used to determine both the velocity and the volume fraction of solids while Martin et al. (1995) and Spelt et al. (1999) showed that the acoustic probe can also be used to obtain information on the size distribution of the particles. In a recent testing of in-line slurry monitors with radioactive slurries suspended with Pulsair Mixers (Hylton & Bayne, 1999), an acoustic probe did not compare well with other instruments most probably due to presence of entrained gases and improper acoustic frequency range of interrogation. The work of the investigators cited has established the potential of the acoustic probe for characterizing/monitoring two-phase flows in relatively ideal, well-characterized suspensions. Two major factors which we judge has prevented its wide-spread use in the processing industry, particularly for dilute suspensions, is careful selection of the frequency range for interrogation and quantification and removal of the noise introduced by bubbles from the acoustic signal obtained from the suspension. Our research during the first funding period to develop an acoustic probe for solid-gas liquid suspensions has resulted in a theory, supported by our experiments, to describe small amplitude dilute suspensions (Norato, 1999, Spelt et al., 1999, Spelt et al., 2001). The theory agrees well with experimental data of sound attenuation up to 45 {approx}01% suspensions of 0.11 and 77 micron radius polystyrene particles in water and 0.4 to 40 vol %, suspensions of 32 micron soda-lime glass particles in water. Also, analyses of our attenuation experiments for solid-gas liquid experiments suggest the theory can be applied to correct for signal interference due to the presence of bubbles over a selected frequency range to permit determination of the solid-liquid volume fraction. Further, we show experimentally that a reliable linear dependency of weight percent solids with attenuation is obtained for low weight fractions at high frequencies of interrogation where bubble interference is minimal. There was a collaborative effort during the first funding period with the Pacific Northwest National Laboratories in that Dr. Margaret Greenwood was a co-investigator on the project. Dr. Greenwood provided a high level of experimental knowledge and techniques on ultrasound propagation, measurement and data processing. During the second funding period the slurry test loop at Oak Ridge National Laboratories under the direction of Mr. Tom Hylton will be employed to demonstrate the measurement capabilities of the prototype acoustic monitor.
Download or read book Government wide Index to Federal Research Development Reports written by and published by . This book was released on 1968 with total page 670 pages. Available in PDF, EPUB and Kindle. Book excerpt:
