Summary and Analysis of Horizontal-tail Contribution to Longitudinal Stability of Swept-wing Airplanes at Low Speeds

Summary and Analysis of Horizontal-tail Contribution to Longitudinal Stability of Swept-wing Airplanes at Low Speeds

Author: Robert H. Neely

Publisher:

Published: 1959

Total Pages: 100

ISBN-13:

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Air-flow characteristics behind wings and wing-body combinations are described and are related to the downwash at specific tail locations for unseparated and separated flow conditions. The effects of various parameters and control devices on the air-flow characteristics and tail contribution are analyzed and demonstrated. An attempt has been made to summarize certain data in a form useful for design. The experimental data herein were obtained mostly at Reynolds numbers greater than 4 x 105 and at Mach numbers less than 0.25.


Linearized Lifting-surface Theory for Swept-back Wings with Slender Plan Forms

Linearized Lifting-surface Theory for Swept-back Wings with Slender Plan Forms

Author: Harvard Lomax

Publisher:

Published: 1949

Total Pages: 48

ISBN-13:

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The spanwise and chordwise distribution of loading, the lift, and the induced drag of a swept-back wing of slender plan form are developed by means of linearized lifting-surface theory. The results are applicable for all free-stream Mach numbers. The term slender implies that the ratio of the reduced span to over-all length of the wing is small.


Iterative Ray-tracing Simulation of Minimum Group-path Traces in Swept-frequency Backscatter Ionograms

Iterative Ray-tracing Simulation of Minimum Group-path Traces in Swept-frequency Backscatter Ionograms

Author: Ming S. Wong

Publisher:

Published: 1975

Total Pages: 28

ISBN-13:

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Swept-frequency traces of minimum group-path length in backscatter-radar ionograms, computed for a measured three-dimensional electron distribution in the midnight sector of the polar ionosphere, are presented. Also presented are minimum group-path traces computed for trial electron distributions chosen to simulate the group-path traces of the measured electron distribution, and to show the effects on the group-path traces as consequences of variations made upon major features of the trial electron distributions.


Some Theoretical Low-speed Span Loading Characteristics of Swept Wings in Roll and Sideslip

Some Theoretical Low-speed Span Loading Characteristics of Swept Wings in Roll and Sideslip

Author: John D. Bird

Publisher:

Published: 1949

Total Pages: 44

ISBN-13:

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The 7-point method of Weissinger is used to calculate the span loading in roll, lateral center of pressure, and damping in roll for wings having various aspect ratios, sweep angles, and taper ratios. The applicability of the method to the determination of certain other aerodynamic derivatives is investigated, and corrections for the first-order effects of compressibility are indicated.


The Rolling Moment Due to Sideslip of Swept Wings at Subsonic and Transonic Speeds

The Rolling Moment Due to Sideslip of Swept Wings at Subsonic and Transonic Speeds

Author: Edward C. Polhamus

Publisher:

Published: 1955

Total Pages: 90

ISBN-13:

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A summary and analysis has been made of results obtained in a systematic research program concerned with the effects of wing sweep, aspect ratio, taper ratio, and dihedral on the rolling moment due to sideslip characteristics of wing-fuselage configurations up to Mach numbers of about 0.95. Other test results are presented to show trends of rolling moment due to sideslip with Mach number for a few wings in the transonic and supersonic speed range.


Biology and the Mechanics of the Wave-Swept Environment

Biology and the Mechanics of the Wave-Swept Environment

Author: Mark Denny

Publisher: Princeton University Press

Published: 2014-07-14

Total Pages: 344

ISBN-13: 1400852889

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This text introduces and draws together pertinent aspects of fluid dynamics, physical oceanography, solid mechanics, and organismal biology to provide a much-needed set of tools for quantitatively examining the biological effects of ocean waves. "Nowhere on earth does water move as violently as on wave-swept coasts," writes the author, "and every breaker that comes pounding on the shore places large hydrodynamic forces on the organisms resident there." Yet wave-swept coral reefs and rocky shores are home to some of the world's most diverse assemblages of plants and animals, and scientists have chosen these environments to carry out much of the recent experimental work in community structure and population dynamics. Until now these studies have been hampered because biologists often lack a working understanding of the mechanics of the wave-swept shore. Mark Denny here supplies that understanding in clear and vivid language. Included are an introduction to wave-induced water motions and the standard theories for describing them, a broad introduction to the hydrodynamic forces these water movements place on plants and animals, and an explanation of how organisms respond to these forces. These tools are put to use in the final chapters in an examination of the mechanisms of "wave exposure" and an exploration of the mechanical determinants of size and shape in wave-swept environments. Originally published in 1988. The Princeton Legacy Library uses the latest print-on-demand technology to again make available previously out-of-print books from the distinguished backlist of Princeton University Press. These editions preserve the original texts of these important books while presenting them in durable paperback and hardcover editions. The goal of the Princeton Legacy Library is to vastly increase access to the rich scholarly heritage found in the thousands of books published by Princeton University Press since its founding in 1905.