An analysis is given of the oscillatory motions of vehicles which traverse ascending and descending paths through the atmosphere at high speed. The specific case of a skip path is examined in detail, and this leads to a form of solution for the oscillatory motion which should recur over any trajectory. The distinguishing feature of this form is the appearance of the Bessel rather than the trigonometric function as the characteristic mode of oscillation.
Stability and Control of Airplanes and Helicopters deals with aircraft flying qualities that determine the stability and control of airplanes and helicopters. It includes problems based on real aircraft, selected to represent the gamut from simple to complicated, and from conventional utility designs to futuristic research types. Many of these problems involve comparison of theory and experiment to demonstrate their mutual relationship. Comprised of 25 chapters, this book begins with a discussion on the aerodynamics of the component parts related to the lift and moment characteristics of an airplane, including wings and associated accessories; bodies such as fuselages, nacelles, and tip tanks; and control surfaces. The reader is then introduced to some mathematical techniques for linear differential equations; steady flight at different speeds; and stick force and control-free stability. Subsequent chapters focus on flaps and high-lift devices; power and compressibility effects; and the manner in which the aircraft responds to the application of control. Aeroelasticity and longitudinal equations of motion are also examined. This monograph is intended for undergraduate and graduate students taking modern engineering courses.
The High Temperature Aspects of Hypersonic Flow is a record of the proceedings of the AGARD-NATO Specialists' Meeting, held at the Technical Centre for Experimental Aerodynamics, Rhode-Saint-Genese, Belgium in April 1962. The book contains the papers presented during the meeting that tackled a broad range of topics in the aspects of hypersonic flow. The subjects covered during the meeting include pressure measurements, interference effects, the use of wind tunnels in aircraft development testing, high temperature gas characteristics, boundary layer research, stability and control and the use of rocket vehicles in flight research. Aerospace engineers and aeronautical engineers will find the book invaluable.
Ballistic Missile and Aerospace Technology, Volume IV: Re-entry is a collection of manuscripts presented at the Sixth Symposium on Ballistic Missile and Aerospace Technology, held in Los Angeles, California, in August 1961. This book is organized into two parts encompassing nine chapters that highlight the re-entry vehicle design information and re-entry thermal protection and materials. Part I deals first with a parametric study on the effects of initial conditions and various mass and aerodynamic parameters on the dynamic motion of a typical re-entry vehicle. This parametric study specifically examines both spinning and non-spinning re-entry at high angles of attack. This part also demonstrates the degree of departure from thermodynamic equilibrium for the various chemical reactions along a typical streamtube to be expected under different flight conditions. This topic is followed by discussions on power-handling capability of antennas operating in the presence of plasmas; the mechanism of self-excited oscillations at transonic speeds; and the computation of three-dimensional steady supersonic flow fields. Part II presents a theoretical analysis of similarity paramaters of evaporative film cooling for blunt bodies. This part then explores the application of ultrasonics to ablation studies. The remaining chapters describe a self-contained, thermally protective mechanism, which is activated by a catalyst that operates within a composite material. These chapters also consider the developmental trends in aerospace materials.
