Download or read book Design Modeling and Testing of a Cascaded Heading Stabilization Controller for a Cruciform Parachute System written by Jackson Daniel and published by . This book was released on 2021 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt: The work presented in this thesis pertains to the advancement of an existing novel aerial delivery platform that utilizes a cruciform parachute canopy. The cruciform design represents a compromise between the simplicity and affordability of unguided parachute systems and the high performance and precision of complex, expensive parafoil systems. The improvements made to the platform can be summarized in two main contributions. First, through the use of a systematic controller design methodology and simulation-focused experimental plan, an effective heading stabilization controller can be developed without requiring substantial amounts of free-flight testing. Second, a cascaded control structure is proposed to facilitate enhanced performance in disturbance rejection and setpoint tracking of the parachute heading compared to the existing single-loop PID controller. This approach to controller design permits rapid deployment of cruciform systems of varying type and scale suited to specific operational requirements.
Download or read book Integrated Computer Technologies in Mechanical Engineering 2022 written by Mykola Nechyporuk and published by Springer Nature. This book was released on 2023-07-19 with total page 778 pages. Available in PDF, EPUB and Kindle. Book excerpt: The International Scientific and Technical Conference “Integrated Computer Technologies in Mechanical Engineering”—Synergetic Engineering (ICTM) was established by National Aerospace University “Kharkiv Aviation Institute.” The Conference ICTM’2022 was held in Kharkiv, Ukraine, during November 18–20, 2022. During this conference, technical exchanges between the research community were carried out in the forms of keynote speeches, panel discussions, as well as special session. In addition, participants were treated to a series of receptions, which forge collaborations among fellow researchers. ICTM’2022 received 137 papers submissions from different countries. All of these offer us plenty of valuable information and would be of great benefit to experience exchange among scientists in modeling and simulation. The organizers of ICTM’2022 made great efforts to ensure the success of this conference. We hereby would like to thank all the members of ICTM’2022 Advisory Committee for their guidance and advice, the members of program committee and organizing committee, and the referees for their effort in reviewing and soliciting the papers, and all authors for their contribution to the formation of a common intellectual environment for solving relevant scientific problems. Also, we grateful to Springer—Janusz Kacprzyk and Thomas Ditzinger as the editor responsible for the series “Lecture Notes in Networks and Systems” for their great support in publishing these selected papers.
Download or read book Development and Testing of a Steerable Cruciform Parachute System written by Shawn Malachy Herrington and published by . This book was released on 2018 with total page 99 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis focuses on the development of a parachute payload system which is capable of precision aerial delivery yet only represents a modest cost increase over ballistic unguided systems. In order to develop such a system, first a canopy is selected. The canopy should be simple and inexpensive to make; in this case a cruciform canopy was selected because this design is material efficient and requires far less labor to manufacture compared to parafoil parachutes. Next some method of stabilizing that canopy during flight must be proposed. In this case, the system heading is to be stabilized via a single actuator by asymmetric deflection of the leading edge of one canopy panel. At this stage in the development, a controller must be designed and implemented which stabilizes the system in the proposed way. Outdoor flight testing is the gold standard of parachute testing methodology since it offers the most realistic flight conditions. However, the unmeasured wind disturbances encountered in outdoor flight testing can confound results and interfere with repeatability of experiments. The first experiment explained in this thesis revolves around the testing of a steer able cruciform parachute system using a vertical wind tunnel. The primary goal of the experiment was to develop a heading stabilizing controller. Additionally, a closed-loop system model was identified and a technique was developed for estimating canopy glide ratio (GR). The vertical wind tunnel testing methodology is far faster and less expensive than the outdoor flight testing which would be needed to accomplish the same goals. After proving that a system can be steered via the proposed methodology, the next stage in the developing of a precision guided vehicle is to demonstrate that the stabilization technique is viable. This is accomplished in both outdoor flight testing and a simulation based on the closed-loop model identified earlier. Furthermore, the precision navigation potential of the system must be demonstrated; specifically, the system must be capable of arriving closer to the desired impact point on the ground than an unguided system dropped under the same conditions. The work described in this thesis has advanced the development of the steerable cruciform parachute system beyond the point of simply being a feasibility demonstrator. The vertical wind tunnel experiments demonstrated that the system heading could be stabilized and subsequent navigation experiments demonstrated that the system outperforms an unguided system during real drops. The work done to compare the effectiveness of different navigation strategies in a simulated environment represents the beginning of the next stage in the development of the parachute system. This next stage involves refinement and performance improvements of the existing platform through engineering design in order to advance the technical readiness level of the project.
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1991 with total page 296 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Rapture of the Nerds written by Cory Doctorow and published by Macmillan. This book was released on 2012-09-04 with total page 353 pages. Available in PDF, EPUB and Kindle. Book excerpt: From the two defining personalities of post-cyberpunk SF, a brilliant collaboration to rival 1987's The Difference Engine by William Gibson and Bruce Sterling
Download or read book Missile Guidance and Control Systems written by George M. Siouris and published by Springer Science & Business Media. This book was released on 2006-05-07 with total page 670 pages. Available in PDF, EPUB and Kindle. Book excerpt: Airborne Vehicle Guidance and Control Systems is a broad and wide- angled engineering and technological area for research, and continues to be important not only in military defense systems but also in industrial process control and in commercial transportation networks such as various Global Positioning Systems (GPS). The book fills a long-standing gap in the literature. The author is retired from the Air Force Institute and received the Air Force's Outstanding Civilian Career Service Award.
Download or read book Submergence written by J. M. Ledgard and published by Coffee House Press. This book was released on 2013-03-26 with total page 226 pages. Available in PDF, EPUB and Kindle. Book excerpt: Award-winning foreign correspondent’s cerebral spy novel-cum-love story exposes humanity’s tenuous hold on a vast and relentless world.
Download or read book Last and First Men written by Olaf Stapledon and published by . This book was released on 1963 with total page 326 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Annotated Mona Lisa written by Carol Strickland and published by Andrews McMeel Publishing. This book was released on 2007-10 with total page 220 pages. Available in PDF, EPUB and Kindle. Book excerpt: Like music, art is a universal language. Although looking at works of art is a pleasurable enough experience, to appreciate them fully requires certain skills and knowledge." --Carol Strickland, from the introduction to The Annotated Mona Lisa: A Crash Course in Art History from Prehistoric to Post-Modern * This heavily illustrated crash course in art history is revised and updated. This second edition of Carol Strickland's The Annotated Mona Lisa: A Crash Course in Art History from Prehistoric to Post-Modern offers an illustrated tutorial of prehistoric to post-modern art from cave paintings to video art installations to digital and Internet media. * Featuring succinct page-length essays, instructive sidebars, and more than 300 photographs, The Annotated Mona Lisa: A Crash Course in Art History from Prehistoric to Post-Modern takes art history out of the realm of dreary textbooks, demystifies jargon and theory, and makes art accessible-even at a cursory reading. * From Stonehenge to the Guggenheim and from Holbein to Warhol, more than 25,000 years of art is distilled into five sections covering a little more than 200 pages.
Download or read book Spaceborne Antennas for Planetary Exploration written by William A. Imbriale and published by John Wiley & Sons. This book was released on 2006-08-04 with total page 594 pages. Available in PDF, EPUB and Kindle. Book excerpt: JPL spacecraft antennas-from the first Explorer satellite in 1958 to current R & D Spaceborne Antennas for Planetary Exploration covers the development of Jet Propulsion Laboratory (JPL) spacecraft antennas, beginning with the first Explorer satellite in 1958 through current research and development activities aimed at future missions. Readers follow the evolution of all the new designs and technological innovations that were developed to meet the growing demands of deep space exploration. The book focuses on the radio frequency design and performance of antennas, but covers environmental and mechanical considerations as well. There is additionally a thorough treatment of all the analytical and measurement techniques used in design and performance assessment. Each chapter is written by one or more leading experts in the field of antenna technology. The presentation of the history and technology of spaceborne antennas is aided by several features: * Photographs and drawings of JPL spacecraft * Illustrations to help readers visualize concepts and designs * Tables highlighting and comparing the performance of the antennas * Bibliographies at the end of each chapter leading to a variety of primary and secondary source material This book complements Large Antennas of the Deep Space Network (Wiley 2002), which surveys the ground antennas covered in support of spacecraft. Together, these two books completely cover all JPL antenna technology, in keeping with the JPL Deep Space Communications and Navigation Series mission to capture and present the many innovations in deep space telecommunications over the past decades. This book is a fascinating and informative read for all individuals working in or interested in deep space telecommunications.
Download or read book The Built Environment written by Wendy R. McClure and published by John Wiley & Sons. This book was released on 2011-09-09 with total page 672 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book takes a sweeping view of the ways we build things, beginning at the scale of products and interiors, to that of regions and global systems. In doing so, it answers questions on how we effect and are affected by our environment and explores how components of what we make—from products, buildings, and cities—are interrelated, and why designers and planners must consider these connections.
Download or read book Expanded Cinema written by Gene Youngblood and published by Meaning Systems. This book was released on 2020-03-03 with total page 464 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Dada Seminars written by Leah Dickerman and published by Distributed Art Publishers (DAP). This book was released on 2005 with total page 330 pages. Available in PDF, EPUB and Kindle. Book excerpt: Includes 12 illustrated essays, these case studies on artists and concepts present Dada as a coherent movement with a set of operating principles.
Download or read book Building the Navy s Bases in World War II written by United States. Bureau of Yards and Docks and published by . This book was released on 1947 with total page 482 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Dictionary of Building and Civil Engineering written by Don Montague and published by Taylor & Francis. This book was released on 1996 with total page 472 pages. Available in PDF, EPUB and Kindle. Book excerpt: This dual-language dictionary lists over 20,000 specialist terms in both French and English, covering architecture, building, engineering and property terms. It meets the needs of all building professionals working on projects overseas. It has been comprehensively researched and compiled to provide an invaluable reference source in an increasingly European marketplace.
Download or read book Energy and the Environment written by and published by . This book was released on 2016 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Anagram Solver written by Bloomsbury Publishing and published by Bloomsbury Publishing. This book was released on 2009-01-01 with total page 719 pages. Available in PDF, EPUB and Kindle. Book excerpt: Anagram Solver is the essential guide to cracking all types of quiz and crossword featuring anagrams. Containing over 200,000 words and phrases, Anagram Solver includes plural noun forms, palindromes, idioms, first names and all parts of speech. Anagrams are grouped by the number of letters they contain with the letters set out in alphabetical order so that once the letters of an anagram are arranged alphabetically, finding the solution is as easy as locating the word in a dictionary.
