[PDF] Full Application Of The Laplace Transformation To The Solution Of The Lateral And Longitudinal Stability Equations Download eBook

Application of the Laplace Transformation to the Solution of the Lateral and Longitudinal Stability Equations

Author: Andrew Gustav Mokrzycki

Publisher:

Published: 1950

Total Pages: 698

ISBN-13:

The application of the Laplace transformation to the solution of the lateral and longitudinal stability equations is presented. The expressions for the time history of the motion in response to a sinusoidal control motion are derived for the general case in which the initial conditions, initial displacements and initial velocities, are assumed different from zero. Some illustrative examples of the application of the Laplace transform to ordinary linear differential equations with constant coefficients and a number example of a specific problem are presented in appendixes.

Technical Note - National Advisory Committee for Aeronautics

Author: United States. National Advisory Committee for Aeronautics

Publisher:

Published: 1958

Total Pages: 1076

ISBN-13:

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Stress and Distortion Analysis of a Swept Box Beam Having Bulkheads Perpendicular to the Spars

Author: Richard R. Heldenfels

Publisher:

Published: 1950

Total Pages: 712

ISBN-13:

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A method is presented for the approximate calculation of the stresses and distortions in a box beam representing the main structural component of a swept wing with a carry-through section and with bulkheads perpendicular to the spars. The application of the method is illustrated by a numerical example and its results are compared with previously published test data.

Methods for Obtaining Desired Helicopter Stability Characteristics and Procedures for Stability Predictions

Author: F. B. Gustafson

Publisher:

Published: 1957

Total Pages: 720

ISBN-13:

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Part 1 of this report presents a brief review of methods available to the helicopter designer for obtaining desired stability characteristics by modifications to the airframe design. The discussion is based on modifications made during the establishment of flying-qualities criteria and includes sample results of theoretical studies of additional methods. The conclusion is reached that it is now feasible to utilize combinations of methods whereby stability-parameter values are realized which in turn provide the desired stability characteristics. Part 2 reviews some of the methods of predicting rotor stability derivatives. The procedures by which these rotor derivatives are employed to estimate helicopter stability characteristics have been summarized.