Studies of the Field of Turbulence in the Lee of Mountain Ranges and Tree Lines
Author: B. Davidson
Publisher:
Published: 1961
Total Pages: 76
ISBN-13:
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Author: B. Davidson
Publisher:
Published: 1961
Total Pages: 76
ISBN-13:
DOWNLOAD EBOOKAuthor: Ben Davidson
Publisher:
Published: 1961
Total Pages: 152
ISBN-13:
DOWNLOAD EBOOKAuthor: Defense Documentation Center (U.S.)
Publisher:
Published: 1963
Total Pages: 824
ISBN-13:
DOWNLOAD EBOOKAuthor:
Publisher:
Published: 1962
Total Pages: 172
ISBN-13:
DOWNLOAD EBOOKAuthor: Grant Brandford Skelton
Publisher:
Published: 1968
Total Pages: 252
ISBN-13:
DOWNLOAD EBOOKThe concern in the work reported is the development of statistical models for the gust environment in the earth's boundary layer for use in determining the gust response characteristics of V/STOL aircraft. A general gust model based upon published gust data was developed, and analyses of V/STOL responses with that model were conducted to determine the gust descriptors significant to V/STOL performance. An interim gust model embodying the significant descriptors was then developed for use in V/STOL gust analyses. Suggestions for meteorological experiments to measure the significant descriptors are made. The significant gust descriptors determined from the analyses are the diagonal terms of the gust covariance tensor, gust probability distributions, mean wind probability distributions, and the dependencies of these statistics on thermal stability, surface roughness, and altitude. Less critical descriptors include the off-diagonal components in the gust covariance tensor and the space-time interplay in that tensor. The significant gusts seen by the aircraft are head-on and vertical gusts on the wings; head-on and vertical gust shears across the wings; head-on, side, and vertical gusts on the tail; and head-on and side gusts on the fuselage. Mean airspeed and sideslip angle are important parameters in V/STOL gust responses. The wing-to-tail transport delay of the gusts in forward flight also has a significant effect. V/STOL gust responses at low airspeeds are generally small due to the low dynamic pressures, and the responses are decidedly nonlinear except at low gust amplitudes.
Author: United States. Department of Commerce. Office of Technical Services
Publisher:
Published: 1962-06
Total Pages: 1176
ISBN-13:
DOWNLOAD EBOOKAuthor: United States. Department of Commerce. Office of Technical Services
Publisher:
Published: 1962
Total Pages: 522
ISBN-13:
DOWNLOAD EBOOKAuthor:
Publisher:
Published: 1962
Total Pages: 968
ISBN-13:
DOWNLOAD EBOOKAuthor: Robert Sharman
Publisher: Springer
Published: 2016-06-27
Total Pages: 529
ISBN-13: 331923630X
DOWNLOAD EBOOKAnyone who has experienced turbulence in flight knows that it is usually not pleasant, and may wonder why this is so difficult to avoid. The book includes papers by various aviation turbulence researchers and provides background into the nature and causes of atmospheric turbulence that affect aircraft motion, and contains surveys of the latest techniques for remote and in situ sensing and forecasting of the turbulence phenomenon. It provides updates on the state-of-the-art research since earlier studies in the 1960s on clear-air turbulence, explains recent new understanding into turbulence generation by thunderstorms, and summarizes future challenges in turbulence prediction and avoidance.