Download or read book Preliminary report on detection of clear air turbulence by radar written by James R. Scoggins and published by . This book was released on 1970 with total page 46 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Evaluation of Clear Air Turbulence Detection by Ground based Radars Special Rawinsondes and Aircraft 1967 1971 written by Roland J. Boucher and published by . This book was released on 1974 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt: During the winter operations, from 1967 to 1971, of Clear Air Turbulence (CAT) research at Wallops Island, Virginia, the Weater Radar Branch of Air Force Cambridge Research Laboratories observed eighteen cases of significant turbulence, defined as cases of light-to-moderate or moderate intensity. The report presents the meteorological data for each of these cases, consisting of synoptic sea level and upper air charts and rawinsonde data, observations of clear air echoes with powerful radars, and aircraft data which are used to indicate the present location and intensity of the turbulence.

Download or read book Optimizing the Radar Detection of Clear Air Turbulence written by David Atlas and published by . This book was released on 1966 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Clear Air Turbulence and Its Detection written by Yih-Ho Pao and published by Springer. This book was released on 2013-12-11 with total page 545 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book National Air Meeting on Clear Air Turbulence written by Society of Automotive Engineers and published by . This book was released on 1966 with total page 218 pages. Available in PDF, EPUB and Kindle. Book excerpt: This publication is divided into two sections: detection of clear air turbulence; and operational aspects. Partial contents include: clear air turbulence problems and solutions a state-of-the-art report; the feasibility of optical radar to detect clear air turbulence; early warning of clear air turbulence by photometric measurements; analysis of clear air turbulence incidents and much more.

Download or read book Clear Air Turbulence a Bibliography 1950 1967 written by Dorothy E. Bulford and published by . This book was released on 1968 with total page 92 pages. Available in PDF, EPUB and Kindle. Book excerpt: Clear air turbulence encounters can occur unexpectedly without any visual evidence or warning. As operations of higher altitude aircraft increase, the phenomenon is encountered more often. Clear air turbulence is defined as 'all turbulence in the free atmosphere of interest in aerospace operations that is not in or adjacent to visible convective activity (this includes turbulence found in cirrus clouds not in or adjacent to visible convective activity).' This bibliography consists of 578 references to technical reports, articles in periodicals, and books published during the past 17 years. References about other forms of turbulence such as that occurring with storms and airplane wake vortices are not included. (Author).

Download or read book Detection of Clear Air Turbulence by Radar written by W. J. Burroughs and published by . This book was released on 1973 with total page 3 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Air Turbulence and its Methods of Detection written by Leonardo Di G. Sigalotti and published by CRC Press. This book was released on 2023-02-24 with total page 429 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book is a concise guide dealing with the subject of air turbulence and its methods of detection with particular applications to aviation turbulence. It begins with a general description of turbulence and provides a background into the nature and causes of atmospheric turbulence that affect aircraft motion, giving updates on the state-of-the-art research on clear air turbulence (CAT). Important physical processes leading to the Kelvin-Helmholtz instability, a primary producer of CAT, are also explained. The several categories of CAT along with its impact on commercial aviation are also presented in a separate chapter, with particular emphasis on the structural damages to planes and injuries. The central theme of the book deals with both the earlier and the latest CAT detecting methods and techniques for remote and in situ sensing and forecasting. A concise presentation of new technologies for reducing aviation weather-related accidents is also offered. A chapter on the weather accident prevention project of the NASA aviation safety program is also included. Additionally, the book ends with a full description of the recent research activities on CAT and future challenges in turbulence detection, prediction and avoidance.

Download or read book Detection and analysis of clear air turbulence using radar and other sensors written by Allan Barr Plunkett and published by . This book was released on 1970 with total page 106 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Design Study of Laser Radar for Detection of Clear Air Turbulence written by Robert C. Breece and published by . This book was released on 1966 with total page 168 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Airborne Investigations of Clear Air Turbulence with Optical Radar written by Peter A. Franken and published by . This book was released on 1965 with total page 182 pages. Available in PDF, EPUB and Kindle. Book excerpt: The program was initiated to explore the possibility that characteristic optical radar echoes might actually be correlated with clear air turbulence. A light twin engine airplane was equipped with a laser radar and ancillary equipment for monitoring acceleration, temperature variations, and relevant meteorlogical data. The design of this equipment and the development of the flight programs was predicated on theoretical considerations of optical scattering from particulate matter. (Author).

Download or read book Evaluation of Clear Air Turbulence Detection by Ground based Radars Special Rawinsondes and Aircraft 1967 1971 written by Roland J. Boucher and published by . This book was released on 1974 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: During the winter operations, from 1967 to 1971, of Clear Air Turbulence (CAT) research at Wallops Island, Virginia, the Weater Radar Branch of Air Force Cambridge Research Laboratories observed eighteen cases of significant turbulence, defined as cases of light-to-moderate or moderate intensity. The report presents the meteorological data for each of these cases, consisting of synoptic sea level and upper air charts and rawinsonde data, observations of clear air echoes with powerful radars, and aircraft data which are used to indicate the present location and intensity of the turbulence.

Download or read book Detection of Clean Air Turbulence by Radar written by W. J. Burroughs and published by . This book was released on 1973 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Aircraft Turbulence Detection and Display from the Professional Pilot s Perspective written by and published by . This book was released on 2004 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of this study was to investigate the detection and display of weather avoidance information to commercial airline, business aircraft, and general aviation aircraft cockpits from the perspective of the professional pilot. A flight campaign was conducted over a period of three years. Convective weather detection was attempted utilizing an experimental airborne weather radar installed on NASA's Airborne Research Integrated Experiments Systems (ARIES) Boeing 757. Additionally ground-based Next Generation Radar (NEXRAD) information and textual data was linked to the aircraft for correlation. It was determined after encountering several heavy turbulence events that radar detection and conventional displays alone were inadequate to provide the types of data needed by the professional flight crew in order to make informed decisions concerning weather avoidance. The NASA King Air B200 and Cessna 206 were also used to evaluate the human factors issues concerning cockpit displays for these classes of aircraft, which are also flown by some professional pilots. In addition to convective weather avoidance associated with thunderstorms or frontal activity, the study also explored clear air turbulence detection techniques. The detection of these events and the communication of this information to other aircraft in an automated Pilot Report format are being used to display danger areas to other pilots.

Download or read book Technical Abstract Bulletin written by and published by . This book was released on with total page 812 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Study of Techniques for Detection and Measurement of Clear Air Turbulence written by Raymond E Zirkle (Jr) and published by . This book was released on 1966 with total page 135 pages. Available in PDF, EPUB and Kindle. Book excerpt: Two general ways in which laser optical radar (optar) might be useful for clear air turbulence detection were examined. The first method involves spectral analysis of doppler-shifted light, backscattered by moving particles, to provide measures of average and gust spectrum velocity components. The second method involves the mapping of particle formations arrayed in the atmosphere by correlates of rough flying conditions such as wind shear, the jet stream, mountain waves, etc. Calculations show that the particulate matter of the troposphere which dominates optical backscatter is dynamically suitable for the mapping of wind motions consistent with anticipated requirements of CAT detection. Experiments by other groups have shown that laser doppler methods can measure particle velocities in the laboratory. Experimental extensions of these techniques will be needed to apply the concept to aircraft. An experimental program with pulsed ruby laser optars was conducted. Particle arrays were detected in both laboratory and field environments, but no evidence was obtained indicating a correlation with turbulent conditions. Laboratory turbulence-generated refractive index changes were much higher than those encountered in the atmosphere. Field tests at Rollinsville, Colorado were inconclusive due to poor weather conditions. Many cloud returns were obtained, but they were not related to mountain waves or turbulence. Airborne optars should be used in further work of this type to provide mobility and to allow direct correlation between signals received and turbulence encountered. (Author).

Download or read book Test and evaluation of the radar thunderstorm turbulence detection system written by and published by . This book was released on 1982 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt: A thunderstorm turbulence detection test bed was developed at the Federal Aviation Administration (FAA) Technical Center by the Massachusetts Institute of Technology, Lincoln Laboratory. This consists of a system to measure and process Doppler radar parameters, and an FAA aircraft instrumented to measure turbulence concurrently with the radar observations. The test bed is being used to investigate the relationship between radar-and aircraft-measured turbulence. Radar measurements of the Doppler spectrum width and aircraft measurements of airspeed fluctuations and center-of-gravity normal accelerations were converted to the cube root of epsilon (cube root of the turbulence dissipation factor) for comparison. Several data collections were made during the summer of 1980. Results of data analysis showed that the major turbulence sequences experienced by the aircraft were essentially reflected by the radar. However, Linear correlation coefficients between radar and aircraft the the cube root of epsilon were only about 0.5. The low correlations are considered to be due to differences in response to turbulence by the two measuring systems, deficiencies in the radar processing, and radar data interpolation errors between the 80-second radar scans. In a more practical analysis, radar-measured turbulence, classified into ranges of light, moderate, and severe turbulence, showed a potentially useful relationship to aircraft turbulence. The predictive value was enhanced by consideration of radar reflectivity factor as a screening variable.