Probability and Frequency Characteristics of Some Flight Buffet Loads
Probability and Frequency Characteristics of Some Flight Buffet Loads

Author: Wilber B. Huston

Publisher:

Published: 1956

Total Pages: 684

ISBN-13:

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The frequency characteristics and statistical properties of the buffet loads measured on the unswept wing and tail of a fighter airplane have been studied in the stall and in the shock regime. The results indicate that the wing loads in buffeting can be treated as the Gaussian response of a simple elastic system. The tail loads appear to represent a more complicated pattern.

A Buffet Investigation at High Subsonic Speeds of Wing-fuselage-tail Combinations Having Sweptback Wings with NACA 64A Thickness Distributions, Fences, a Leading-edge Extension, and Body Contouring
A Buffet Investigation at High Subsonic Speeds of Wing-fuselage-tail Combinations Having Sweptback Wings with NACA 64A Thickness Distributions, Fences, a Leading-edge Extension, and Body Contouring

Author: Fred B. Sutton

Publisher:

Published: 1957

Total Pages: 62

ISBN-13:

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An investigation has been made to determine the effect of wing fences, a wing leading-edge extension, changing wing sweepback angle from 40 to 45 and 50 degrees, fuselage contouring, and varying horizontal tail height upon the buffeting response of some typical airplane configurations employing sweptback wings with high aspect ratios. The tests were conducted through an angle-of-attack range at Mach numbers varying from 0.60 to 0.92 at a Reynolds number of 2 million.

Annual Report
Annual Report

Author: United States. National Advisory Committee for Aeronautics

Publisher:

Published: 1953

Total Pages: 534

ISBN-13:

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Mechanical Vibration and Shock Analysis, Random Vibration
Mechanical Vibration and Shock Analysis, Random Vibration

Author: Christian Lalanne

Publisher: John Wiley & Sons

Published: 2014-05-12

Total Pages: 661

ISBN-13: 1848216467

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The vast majority of vibrations encountered in the real environment are random in nature. Such vibrations are intrinsically complicated and this volume describes the process that enables us to simplify the required analysis, along with the analysis of the signal in the frequency domain. The power spectrum density is also defined, together with the requisite precautions to be taken in its calculations as well as the processes (windowing, overlapping) necessary to obtain improved results. An additional complementary method – the analysis of statistical properties of the time signal – is also described. This enables the distribution law of the maxima of a random Gaussian signal to be determined and simplifies the calculation of fatigue damage by avoiding direct peak counting.