High Angle of Attack Stability and Control


Book Description

High-performance aircraft are susceptible to degraded flying qualities during maneuvering flight for a number of reasons, including aerodynamic nonlinearities, inertial coupling, and rapidly changing flight condition. Lateral-directional modes of motion coupled with longitudinal motions in asymmetric flight and high angle of attack can lead to instability and adverse control response. The pilot must adapt his control strategies to varying aircraft dynamics, and his work load is high; consequently, improper piloting procedures could occur, leading to inadvertent loss of control.




Flight Stability and Automatic Control


Book Description

The second edition of Flight Stability and Automatic Control presents an organized introduction to the useful and relevant topics necessary for a flight stability and controls course. Not only is this text presented at the appropriate mathematical level, it also features standard terminology and nomenclature, along with expanded coverage of classical control theory, autopilot designs, and modern control theory. Through the use of extensive examples, problems, and historical notes, author Robert Nelson develops a concise and vital text for aircraft flight stability and control or flight dynamics courses.




Fundamentals and Methods of High Angle-of-Attack Flying Qualities Research


Book Description

This report is intended for use as a collection and analysis of diverse data gathering, empirical, and analytical approaches to the high angle of attack aircraft stability and control problem; as a compendium of several methods of defining aircraft departure and spin susceptibility; as a reference for spin definition and spin recovery enhancement; as a review of specifications, regulations, and design guides as they pertain to high angle of attack flight; and as a medium for expounding where tomorrow's high angle of attack investigative attention should focus. The design of safe, effective fighter aircraft in the high angle of attack combat environment is reaching a critical point. Accepted flying qualities design guidelines (necessary to establish stability and control requirements) must be established to address flight operations in the high angle of attack flight regime. Most of the research to date has focused on aircraft departure. Parameters/criteria to define desired high angle of attack flying qualities in the post-stall region (outside the realm of departure) are still unanswered.







Stability and Control of Airplanes and Helicopters


Book Description

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.







Stability and Control of Airplanes and Helicopters


Book Description

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.










Stick and Rudder: An Explanation of the Art of Flying


Book Description

Publisher's Note: Products purchased from Third Party sellers are not guaranteed by the publisher for quality, authenticity, or access to any online entitlements included with the product. WHAT'S IN STICK AND RUDDER: The invisible secret of all heavier-than-air flight: the Angle of Attack. What it is, and why it can't be seen. How lift is made, and what the pilot has to do with it. Why airplanes stall How do you know you're about to stall? The landing approach. How the pilot's eye functions in judging the approach. The visual clues by which an experienced pilot unconsciously judges: how you can quickly learn to use them. "The Spot that does not move." This is the first statement of this phenomenon. A foolproof method of making a landing approach across pole lines and trees. The elevator and the throttle. One controls the speed, the other controls climb and descent. Which is which? The paradox of the glide. By pointing the nose down less steeply, you descend more steeply. By pointing the nose down more steeply, you can glide further. What's the rudder for? The rudder does NOT turn the airplane the way a boat's rudder turns the boat. Then what does it do? How a turn is flown. The role of ailerons, rudder, and elevator in making a turn. The landing--how it's made. The visual clues that tell you where the ground is. The "tail-dragger" landing gear and what's tricky about it. This is probably the only analysis of tail-draggers now available to those who want to fly one. The tricycle landing gear and what's so good about it. A strong advocacy of the tricycle gear written at a time when almost all civil airplanes were taildraggers. Why the airplane doesn't feel the wind. Why the airplane usually flies a little sidewise. Plus: a chapter on Air Accidents by Leighton Collins, founder and editor of AIR FACTS. His analyses of aviation's safety problems have deeply influenced pilots and aeronautical engineers and have contributed to the benign characteristics of today's airplane. Stick and Rudder is the first exact analysis of the art of flying ever attempted. It has been continously in print for thirty-three years. It shows precisely what the pilot does when he flies, just how he does it, and why. Because the basics are largely unchanging, the book therefore is applicable to large airplanes and small, old airplanes and new, and is of interest not only to the learner but also to the accomplished pilot and to the instructor himself. When Stick and Rudder first came out, some of its contents were considered highly controversial. In recent years its formulations have become widely accepted. Pilots and flight instructors have found that the book works. Today several excellent manuals offer the pilot accurate and valuable technical information. But Stick and Rudder remains the leading think-book on the art of flying. One thorough reading of it is the equivalent of many hours of practice.