Download or read book Optimal Dynamic Soaring for Full Size Sailplanes written by Randel J. Gordon and published by . This book was released on 2006 with total page 330 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Dynamic Soaring Beyond Biomimetics Control of an Albatross inspired Wind powered System written by Gabriel D. Bousquet and published by . This book was released on 2018 with total page 172 pages. Available in PDF, EPUB and Kindle. Book excerpt: Albatrosses extract their propulsive energy from horizontal winds in a maneuver called dynamic soaring, and travel impressive distance (5000 km/week) by "riding the winds". Accordingly, for albatrosses flight is barely more strenuous than rest. While thermal soaring, exploited by birds of prey and sports gliders, consists of simply remaining in updrafts, extracting energy from horizontal winds necessitates redistributing momentum across the wind shear layer, by means of an intricate and dynamic flight manoeuver. Historically, dynamic soaring has been described as a sequence of half-turns connecting upwind climbs and downwind dives through the surface shear layer. Relaxing the half-turn hypothesis, this thesis numerically and analytically studies the "minimum-wind" problem i. e. the question of how much wind is required to stay aloft with dynamic soaring, and what is the optimal flight strategy to do so. Contrary to current thinking, but consistent with GPS recordings of albatrosses, it is shown that when the shear layer is thin the optimal trajectory is composed of small-angle, large-radius arcs. Essentially, the albatross is a flying sailboat, sequentially acting as sail and keel, and most efficient when remaining crosswind at all times. The thin-shear analysis is then extended asymptotically, predicting in closed-form the most efficient dynamic soaring trajectory in wind shears of finite thickness. Building upon the conceptual study of dynamic soaring, a robotic system inspired by the albatross is proposed: the "flying sailboat", i. e. a low-flying, water-skimming airplane powered by a keel-and-sail combination. Potentially, the flying sailboat could travel 10x faster than a traditional sailboat of the same size, survive in much rougher seas than hydrofoil boats, and carry 10x more payload than a naive robotic copy of the albatross. A mechanical prototype is presented, with the keel and height controlled with feedback-linearization controllers. Experimental results demonstrating the critical aspects of the system's operation and control are reported: stable extreme-low height flight concurrent with controlled keel immersion and force generation.
Download or read book Dynamic Soaring Dissected written by Colin Taylor and published by Grosvenor House Publishing. This book was released on 2023-01-26 with total page 210 pages. Available in PDF, EPUB and Kindle. Book excerpt: Dynamic Soaring Dissected Albatrosses fly over the oceans in swooping, curving flight gliding thousands of kilometres in search of food, mostly without flapping their wings. This is known as dynamic soaring, which is the use of the energy of the horizontal wind to sustain speed and height. It is different from the soaring flight of most other birds and gliders which use the vertical motion of the air to maintain or gain height. Since the 1880's, a time before manned gliding flight had been achieved, the mechanism of dynamic soaring has been poorly explained by the Rayleigh cycle or the wind gradient theory. However, there is more to dynamic soaring than the wind gradient and furthermore, the true nature of albatross flight has only recently been revealed by filming and GPS tracking. Dynamic Soaring Dissected takes up the discussion where it was left in the 19th century and explains how aircraft and birds fly. It looks at albatross flight through the lens of electronic tracking and takes us on a foraging trip with an albatross in long-distance soaring flight. In the Windward Turn Theory, it describes the mechanism of dynamic soaring and the hidden effect of the wind on a bird or an aircraft in flight. It explains the way that albatrosses are able to turn this effect to their advantage and how they are able to dynamic soar crosswind, upwind and downwind. It also describes how radio-control gliders can achieve huge speeds in circling flight and settles the perennial debate on the Myth of the Downwind Turn and what really happens when an aircraft turns downwind and ends up in a stall and spin accident.
Download or read book Journal of Guidance Control and Dynamics written by and published by . This book was released on 2009 with total page 954 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Design of Sailplanes for Optimum Thermal Soaring Performance written by Clarence D. Cone (Jr.) and published by . This book was released on 1964 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Sailplanes Their Design Construction and Pilotage written by Cecil Hugh Latimer Needham and published by . This book was released on 1937 with total page 340 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book General Aviation Aircraft Design written by Snorri Gudmundsson and published by Butterworth-Heinemann. This book was released on 2013-09-03 with total page 1058 pages. Available in PDF, EPUB and Kindle. Book excerpt: Find the right answer the first time with this useful handbook of preliminary aircraft design. Written by an engineer with close to 20 years of design experience, General Aviation Aircraft Design: Applied Methods and Procedures provides the practicing engineer with a versatile handbook that serves as the first source for finding answers to realistic aircraft design questions. The book is structured in an "equation/derivation/solved example" format for easy access to content. Readers will find it a valuable guide to topics such as sizing of horizontal and vertical tails to minimize drag, sizing of lifting surfaces to ensure proper dynamic stability, numerical performance methods, and common faults and fixes in aircraft design. In most cases, numerical examples involve actual aircraft specs. Concepts are visually depicted by a number of useful black-and-white figures, photos, and graphs (with full-color images included in the eBook only). Broad and deep in coverage, it is intended for practicing engineers, aerospace engineering students, mathematically astute amateur aircraft designers, and anyone interested in aircraft design. Organized by articles and structured in an "equation/derivation/solved example" format for easy access to the content you need Numerical examples involve actual aircraft specs Contains high-interest topics not found in other texts, including sizing of horizontal and vertical tails to minimize drag, sizing of lifting surfaces to ensure proper dynamic stability, numerical performance methods, and common faults and fixes in aircraft design Provides a unique safety-oriented design checklist based on industry experience Discusses advantages and disadvantages of using computational tools during the design process Features detailed summaries of design options detailing the pros and cons of each aerodynamic solution Includes three case studies showing applications to business jets, general aviation aircraft, and UAVs Numerous high-quality graphics clearly illustrate the book's concepts (note: images are full-color in eBook only)
Download or read book Soaring written by and published by . This book was released on 1984 with total page 804 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Technical Soaring written by and published by . This book was released on 2005 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Sailplane Design written by Vittorio Pajno and published by . This book was released on 2006 with total page 464 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Design of Sailplanes for Optimum Thermal Soaring Performance written by Clarence D. Cone and published by . This book was released on 1964 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Paths Of Soaring Flight written by Frank George Irving and published by World Scientific. This book was released on 1999-03-26 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is concerned with the sport of soaring, mainly with the mathematical basis of sailplane design and operation. It does not tell the beginner how to fly, but it will give an experienced pilot some background, with historical notes showing how ideas have evolved and could develop in the future. Some of the material is taken from OSTIV (Organisation Scientifique et Technique Internationale de Vol a Viole) publications and from Technical Soaring, neither of which is readily available to the general public, including papers by the author and others. Extensive references are provided in each chapter.
Download or read book Popular Mechanics written by and published by . This book was released on 1946-08 with total page 272 pages. Available in PDF, EPUB and Kindle. Book excerpt: Popular Mechanics inspires, instructs and influences readers to help them master the modern world. Whether it’s practical DIY home-improvement tips, gadgets and digital technology, information on the newest cars or the latest breakthroughs in science -- PM is the ultimate guide to our high-tech lifestyle.
Download or read book American Soaring Handbook 9 written by Soaring Society of America and published by . This book was released on 1965 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Introduction to Aircraft Flight Mechanics written by Thomas R. Yechout and published by AIAA. This book was released on 2003 with total page 666 pages. Available in PDF, EPUB and Kindle. Book excerpt: Based on a 15-year successful approach to teaching aircraft flight mechanics at the US Air Force Academy, this text explains the concepts and derivations of equations for aircraft flight mechanics. It covers aircraft performance, static stability, aircraft dynamics stability and feedback control.
Download or read book Model Aircraft Aerodynamics written by Martin Simons and published by . This book was released on 1985 with total page 274 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Technical Memorandum National Advisory Committee for Aeronautics written by United States. National Advisory Committee for Aeronautics and published by . This book was released on 1931 with total page 886 pages. Available in PDF, EPUB and Kindle. Book excerpt: Chiefly translations from foreign aeronautical journals.
