Prediction of Slant Wind Shear with an Offset Tower Observation System
Author: H. Albert Brown
Publisher:
Published: 1983
Total Pages: 31
ISBN-13:
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Author: H. Albert Brown
Publisher:
Published: 1983
Total Pages: 31
ISBN-13:
DOWNLOAD EBOOKAuthor: H. Albert Brown
Publisher:
Published: 1983
Total Pages: 36
ISBN-13:
DOWNLOAD EBOOKAnalysis of remote tower measurements of wind speed collected at the AFGL Weather Test Facility at Otis AFB, Massachusetts, demonstrated the accuracy of an offset tower system to predict the Sland Wind Shear (SWS) over a runway. The study of wind shear has been one of a continuing program of observing and short-range prediction capabilities to meet future Air Force requirements. The objective was to evaluate the relative effectiveness of two statistically-based approaches (extrapolation and screening-regression-determined equations) using offset tower data in predicting SWS speed for intervals of 0, 5, 10, 15, 30 and 60 min at two levels of severity. A surface-based runway wind observation system was used as a comparative measures.
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Publisher:
Published: 1984
Total Pages: 1200
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DOWNLOAD EBOOKAuthor: H. Albert Brown
Publisher:
Published: 1982
Total Pages: 48
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DOWNLOAD EBOOKWind data have been analyzed to produce frequencies of occurrence of slant wind shear with respect to surface wind speed, time of day, vertical temperature gradient and wind shear direction differences. Slant wind shear (SWS) is a measurement that more closely approximates the shear encountered by an aircraft on takeoff or landing. It is computed as the wind shear between a higher level wind (in this study, 60 m) and the surface separated by a horizontal distance equivalent to that which an aircraft would traverse in descending or ascending that height. Additional study was also completed on the specification of slant wind shear along the runway through the use of an offset towersurface site system.
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Total Pages: 956
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Published: 1984
Total Pages: 1252
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Published: 1978
Total Pages: 240
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DOWNLOAD EBOOKAuthor: Environmental Science Information Center. Library and Information Services Division
Publisher:
Published: 1984
Total Pages: 14
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Published: 1986
Total Pages: 642
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DOWNLOAD EBOOKAuthor: Assessment and Information Services Center (U.S.). Library and Information Services Division
Publisher:
Published: 1983
Total Pages: 606
ISBN-13:
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