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A Study of the positions and velocities of a space station and a ferry vehicle during rendezvous and return

Fixed-base simulation study of a pilot's ability to control a winged-satellite vehicle during high-drag variable-lift entries

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Application of several methods for determining transfer functions and frequency response of aircraft from flight data

In the process of analyzing the longitudinal frequency-response characteristics of aircraft, information on some of the methods of analysis has been obtained by the Langley Laboratory of the National Advisory Committee for Aeronautics. In the investigation of these methods, the practical applications and limitations were stressed.In general, the methods considered may be classed as: (1) analysis of sinusoidal response, (2) analysis of the transient response as to harmonic content through determination of the Fourier integral by manual or machine methods, and (3) analysis of the transient through the use of least-squares solutions of the coefficients of an assumed equation for either transient time response or frequency response (sometimes referred to as curve-fitting methods).