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Power Plant And Drive Train Improvements Of The Nps Hummingbird Remotely Piloted Helicopter
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Book Synopsis Power Plant and Drive Train Improvements of the NPS Hummingbird Remotely Piloted Helicopter by : Robert E. Conway
Download or read book Power Plant and Drive Train Improvements of the NPS Hummingbird Remotely Piloted Helicopter written by Robert E. Conway and published by . This book was released on 1996 with total page 89 pages. Available in PDF, EPUB and Kindle. Book excerpt: Originally designed as a target drone for the U.S. Army, the NPS hummingbird has undergone several modifications to convert it into a reliable research platform. The 163 pound remotely piloted helicopter (RPH) is powered by a Weslake Aeromarine Engines Limited (WAEL) 342 two stroke, twin cylinder, 25 hp, gasoline engine. An engine failure due to cylinder overheating halted research efforts until investigation as to the cause and subsequent corrections could be made. Costing approximately $3000 per engine, another failure is unacceptable. The tasks undertaken in this thesis were to investigate the cause of the overheat failure and improve the engine cooling system. Cooling system corrections required total redesigns of the engine cooling and engine start systems. Additionally, research of the RPH's history revealed a need for a torsional shock absorber to be incorporated in the drive train to increase component life. The changes made to Hummingbird provide a decrease in empty weight, minimal center of gravity change and, most importantly, an increase in user safety finishing the Department of Aeronautics and Astronautics with a dependable vehicle for rotary wing research.
Book Synopsis Power Plant and Drive Train of the NPS Hummingbird Remotely Piloted Helicopter by : Robert E. Conway
Download or read book Power Plant and Drive Train of the NPS Hummingbird Remotely Piloted Helicopter written by Robert E. Conway and published by . This book was released on 1996-09-01 with total page 102 pages. Available in PDF, EPUB and Kindle. Book excerpt: Originally designed as a target drone for the U.S. Army, the NPS hummingbird has undergone several modifications to convert it into a reliable research platform. The 163 pound remotely piloted helicopter (RPH) is powered by a Weslake Aeromarine Engines Limited (WAEL) 342 two stroke, twin cylinder, 25 hp, gasoline engine. An engine failure due to cylinder overheating halted research efforts until investigation as to the cause and subsequent corrections could be made. Costing approximately $3000 per engine, another failure is unacceptable. The tasks undertaken in this thesis were to investigate the cause of the overheat failure and improve the engine cooling system. Cooling system corrections required total redesigns of the engine cooling and engine start systems. Additionally, research of the RPH's history revealed a need for a torsional shock absorber to be incorporated in the drive train to increase component life. The changes made to Hummingbird provide a decrease in empty weight, minimal center of gravity change and, most importantly, an increase in user safety finishing the Department of Aeronautics and Astronautics with a dependable vehicle for rotary wing research.
Book Synopsis Final Modifications of NPS Hummingbird Remotely Piloted Helicopter in Preparation for Flight by : Andrew J. Booth
Download or read book Final Modifications of NPS Hummingbird Remotely Piloted Helicopter in Preparation for Flight written by Andrew J. Booth and published by . This book was released on 1995 with total page 41 pages. Available in PDF, EPUB and Kindle. Book excerpt: The goals of this thesis were to make final design modifications and perform static testing to prepare the Hummingbird, a 150 pound, remotely piloted helicopter (RPH), for untethered flight. The major elements involved were: (1) The adaptation of a suitable, permanently-dedicated test stand for use with large-scale RPH/RPV (remotely piloted vehicle) aircraft; (2) A major rotor drivetrain improvement to the helicopter to enable it to autorotate and safely land in the event of an in-flight engine failure, thus avoiding potential loss of the helicopter due to crash; (3) Complete break-in and testing of a replacement engine for a mechanically-seized first engine; and (4) Limited hover testing while secured to the tether test stand. Test stand modifications include design and implementation of a compression spring to offset the weight of the new mounting assembly and a restricting collar to confine mobility of the stand's universal joint. The mechanical change to the drivetrain consists of replacement of a conventional belt-drive sprocket with a one-way sprague clutch bearing inside the gear. This provides the Hummingbird with the critical capability to autorotate. The new engine, correctly broken in, and the subsequent static testing provide the Department of Aeronautics and Astronautics with an operational platform ready to perform subsequent in-flight testing.
Book Synopsis Final Modifications of NPS Hummingbird Remotely Piloted Helicopter in Preparation for Flight by : Andrew J. Booth
Download or read book Final Modifications of NPS Hummingbird Remotely Piloted Helicopter in Preparation for Flight written by Andrew J. Booth and published by . This book was released on 1995 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The goals of this thesis were to make final design modifications and perform static testing to prepare the Hummingbird, a 150 pound, remotely piloted helicopter (RPH), for untethered flight. The major elements involved were: (1) The adaptation of a suitable, permanently-dedicated test stand for use with large-scale RPH/RPV (remotely piloted vehicle) aircraft; (2) A major rotor drivetrain improvement to the helicopter to enable it to autorotate and safely land in the event of an in-flight engine failure, thus avoiding potential loss of the helicopter due to crash; (3) Complete break-in and testing of a replacement engine for a mechanically-seized first engine; and (4) Limited hover testing while secured to the tether test stand. Test stand modifications include design and implementation of a compression spring to offset the weight of the new mounting assembly and a restricting collar to confine mobility of the stand's universal joint. The mechanical change to the drivetrain consists of replacement of a conventional belt-drive sprocket with a one-way sprague clutch bearing inside the gear. This provides the Hummingbird with the critical capability to autorotate. The new engine, correctly broken in, and the subsequent static testing provide the Department of Aeronautics and Astronautics with an operational platform ready to perform subsequent in-flight testing.
Book Synopsis RPH Preliminary Design, Trend Analysis and Initial Analysis of the NPS Hummingbird by : James L. Vandiver
Download or read book RPH Preliminary Design, Trend Analysis and Initial Analysis of the NPS Hummingbird written by James L. Vandiver and published by . This book was released on 1992 with total page 97 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Acquisition, Design Modification, Assembly, and Ground Test of NPS Hummingbird Remotely Piloted Helicopter by : Gregory J. Fick
Download or read book Acquisition, Design Modification, Assembly, and Ground Test of NPS Hummingbird Remotely Piloted Helicopter written by Gregory J. Fick and published by . This book was released on 1993 with total page 86 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Hummingbird is a 15()-lb. gross weight, remotely piloted helicopter (RPH) with a 50-lb. payload and a rotor radius of 10.25 ft. It is powered by a 25 h.p. air cooled two-cylinder Westlake engine. As such it represents one of the largest RPH's in the world. It was purchased from Gorham Model Products in 1992 to provide a suitable rotor craft research flight test platform for the Department of Aeronautics and Astronautics at the Naval Postgraduate School. The helicopter was delivered disassembled and was accompanied by an ample supply of replacement and spare parts. Also included was a second helicopter in a partially assembled condition that had been previously flown. Assemblies provided comprised the chassis, main rotor transmission, rotor head assembly and tailboom with tail rotor gear box and rotor. The task undertaken by this thesis was to fabricate one complete fully operable RPH and to design, fabricate and install whatever new assemblies that were required for its NPS mission and to make up for deficiencies in the previous design. The work completed required: (1) Design, fabrication and installation of a new skid-type landing gear system; (2) Redesign, and incorporation of a new engine mount system; (3) Modification of the engine and main rotor transmission coupling; (4) Upgrade of the electrical system and elongation of the nose section; and (5) Initial engine testing. Recommendations for future modifications to the helicopter and laboratory facilities, and development of a static hover test fixture are also included.
Book Synopsis Handbook of Unmanned Aerial Vehicles by : Kimon P. Valavanis
Download or read book Handbook of Unmanned Aerial Vehicles written by Kimon P. Valavanis and published by Springer. This book was released on 2014-08-29 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Handbook of Unmanned Aerial Vehicles is a reference text for the academic and research communities, industry, manufacturers, users, practitioners, Federal Government, Federal and State Agencies, the private sector, as well as all organizations that are and will be using unmanned aircraft in a wide spectrum of applications. The Handbook covers all aspects of UAVs, from design to logistics and ethical issues. It is also targeting the young investigator, the future inventor and entrepreneur by providing an overview and detailed information of the state-of-the-art as well as useful new concepts that may lead to innovative research. The contents of the Handbook include material that addresses the needs and ‘know how’ of all of the above sectors targeting a very diverse audience. The Handbook offers a unique and comprehensive treatise of everything one needs to know about unmanned aircrafts, from conception to operation, from technologies to business activities, users, OEMs, reference sources, conferences, publications, professional societies, etc. It should serve as a Thesaurus, an indispensable part of the library for everyone involved in this area. For the first time, contributions by the world’s top experts from academia, industry, government and the private sector, are brought together to provide unique perspectives on the current state-of-the-art in UAV, as well as future directions. The Handbook is intended for the expert/practitioner who seeks specific technical/business information, for the technically-oriented scientists and engineers, but also for the novice who wants to learn more about the status of UAV and UAV-related technologies. The Handbook is arranged in a user-friendly format, divided into main parts referring to: UAV Design Principles; UAV Fundamentals; UAV Sensors and Sensing Strategies; UAV Propulsion; UAV Control; UAV Communication Issues; UAV Architectures; UAV Health Management Issues; UAV Modeling, Simulation, Estimation and Identification; MAVs and Bio-Inspired UAVs; UAV Mission and Path Planning; UAV Autonomy; UAV Sense, Detect and Avoid Systems; Networked UAVs and UAV Swarms; UAV Integration into the National Airspace; UAV-Human Interfaces and Decision Support Systems; Human Factors and Training; UAV Logistics Support; UAV Applications; Social and Ethical Implications; The Future of UAVs. Each part is written by internationally renowned authors who are authorities in their respective fields. The contents of the Handbook supports its unique character as a thorough and comprehensive reference book directed to a diverse audience of technologists, businesses, users and potential users, managers and decision makers, novices and experts, who seek a holistic volume of information that is not only a technical treatise but also a source for answers to several questions on UAV manufacturers, users, major players in UAV research, costs, training required and logistics issues.
Book Synopsis Flying Insects and Robots by : Dario Floreano
Download or read book Flying Insects and Robots written by Dario Floreano and published by Springer Science & Business Media. This book was released on 2009-10-23 with total page 319 pages. Available in PDF, EPUB and Kindle. Book excerpt: Flying insects are intelligent micromachines capable of exquisite maneuvers in unpredictable environments. Understanding these systems advances our knowledge of flight control, sensor suites, and unsteady aerodynamics, which is of crucial interest to engineers developing intelligent flying robots or micro air vehicles (MAVs). The insights we gain when synthesizing bioinspired systems can in turn benefit the fields of neurophysiology, ethology and zoology by providing real-life tests of the proposed models. This book was written by biologists and engineers leading the research in this crossdisciplinary field. It examines all aspects of the mechanics, technology and intelligence of insects and insectoids. After introductory-level overviews of flight control in insects, dedicated chapters focus on the development of autonomous flying systems using biological principles to sense their surroundings and autonomously navigate. A significant part of the book is dedicated to the mechanics and control of flapping wings both in insects and artificial systems. Finally hybrid locomotion, energy harvesting and manufacturing of small flying robots are covered. A particular feature of the book is the depth on realization topics such as control engineering, electronics, mechanics, optics, robotics and manufacturing. This book will be of interest to academic and industrial researchers engaged with theory and engineering in the domains of aerial robotics, artificial intelligence, and entomology.
Book Synopsis Federal Aviation Regulations by : United States. Federal Aviation Administration
Download or read book Federal Aviation Regulations written by United States. Federal Aviation Administration and published by . This book was released on 1989 with total page 504 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Counterterrorism and Cybersecurity by : Newton Lee
Download or read book Counterterrorism and Cybersecurity written by Newton Lee and published by Springer. This book was released on 2015-04-07 with total page 488 pages. Available in PDF, EPUB and Kindle. Book excerpt: From 9/11 to Charlie Hebdo along with Sony-pocalypse and DARPA's $2 million Cyber Grand Challenge, this book examines counterterrorism and cyber security history, strategies and technologies from a thought-provoking approach that encompasses personal experiences, investigative journalism, historical and current events, ideas from thought leaders and the make-believe of Hollywood such as 24, Homeland and The Americans. President Barack Obama also said in his 2015 State of the Union address, "We are making sure our government integrates intelligence to combat cyber threats, just as we have done to combat terrorism. In this new edition, there are seven completely new chapters, including three new contributed chapters by healthcare chief information security officer Ray Balut and Jean C. Stanford, DEF CON speaker Philip Polstra and security engineer and Black Hat speaker Darren Manners, as well as new commentaries by communications expert Andy Marken and DEF CON speaker Emily Peed. The book offers practical advice for businesses, governments and individuals to better secure the world and protect cyberspace.
Book Synopsis Concept to Reality by : National Aeronautics Admininstration
Download or read book Concept to Reality written by National Aeronautics Admininstration and published by CreateSpace. This book was released on 2013-11 with total page 302 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Langley Memorial Aeronautical Laboratory was established in 1917 as the Nation's first civil aeronautics research laboratory under the charter of the National Advisory Committee for Aeronautics (NACA). With a primary mission to identify and solve the problems of flight, the highly productive laboratory utilized an extensive array of wind tunnels, laboratory equipment, and flight research aircraft to conceive and mature new aeronautical concepts and provide databases and design methodology for critical technical disciplines in aircraft design. Prior to World War II (WWII), research at Langley on such diverse topics as airfoils, aircraft structures, engine cowlings and cooling, gust alleviation, and flying qualities was widely disseminated within the civil aviation community, and well-known applications of the technology to civil aircraft were commonplace. During WWII, however, the facilities and personnel of Langley were necessarily focused on support of the Nation's military efforts. Following WWII, aeronautical research at Langley was stimulated by the challenges of high speed flight and the associated problems that were exhibited by high-speed aircraft configurations operating at relatively low speeds, such as those used for takeoff and landing. Much of Langley's research during that time would ultimately be useful to both the civil and military aviation industries. With the emergence of the new National Aeronautics and Space Administration (NASA) in 1958, Langley retained its vital role in aeronautical research and assumed a leading position as NASA Langley Research Center, along with Ames Research Center, Lewis Research Center (now Glenn Research Center), and Dryden Flight Research Center. Langley's legacy of critical contributions to the civil aviation industry includes a wide variety of activities ranging from fundamental physics to applied engineering disciplines. Through the mechanisms of NASA technical reports, technical symposia, meetings with industry, and cooperative projects, the staff of Langley Research Center has maintained an awareness of the unique problems and challenges facing the U.S. civil aviation industry. With a sensitivity toward these unique requirements, Langley researchers have conceived and conducted extremely relevant research that has been applied directly to civil aircraft. These applications have resulted in increased mission performance, enhanced safety, and improved competitiveness. This document is intended to be a companion to NASA SP-2000-4519, "Partners in Freedom: Contributions of the Langley Research Center to U.S. Military Aircraft of the 1990s." Material included in the combined set of volumes provides informative and significant examples of the impact of Langley's research on U.S. civil and military aircraft of the 1990s. As worldwide advances in aeronautics and aviation continue at a breathtaking pace, documenting the significant activities, individuals, and events that have shaped the destinies of U.S. civil and military aviation has become increasingly important. In the research and development communities, many instances have occurred where fundamental, groundbreaking efforts have been forgotten or confused because of turnover of staffs, loss of technical records, and lack of documentation. This volume, "Concept to Reality: Contributions of the NASA Langley Research Center to U.S. Civil Aircraft of the 1990s," highlights significant Langley contributions to safety, cruise performance, takeoff and landing capabilities, structural integrity, crashworthiness, flight deck technologies, pilot-vehicle interfaces, flight characteristics, stall and spin behavior, computational design methods, and other challenging technical areas for civil aviation.
Book Synopsis Avoiding Aviation Gridlock & Reducing the Accident Rate by : National Civil Aviation Review Commission (U.S.)
Download or read book Avoiding Aviation Gridlock & Reducing the Accident Rate written by National Civil Aviation Review Commission (U.S.) and published by . This book was released on 1997 with total page 196 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Low-Altitude Wind Shear and Its Hazard to Aviation by : National Research Council
Download or read book Low-Altitude Wind Shear and Its Hazard to Aviation written by National Research Council and published by National Academies Press. This book was released on 1983-02-01 with total page 124 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :Richard Hallion Publisher :National Aeronautics and Space Administration Headquarters ISBN 13 : Total Pages :1064 pages Book Rating :4.3/5 (243 download)
Book Synopsis NASA's Contributions to Aeronautics by : Richard Hallion
Download or read book NASA's Contributions to Aeronautics written by Richard Hallion and published by National Aeronautics and Space Administration Headquarters. This book was released on 2010 with total page 1064 pages. Available in PDF, EPUB and Kindle. Book excerpt: Two-volume collection of case studies on aspects of NACA-NASA research by noted engineers, airmen, historians, museum curators, journalists, and independent scholars. Explores various aspects of how NACA-NASA research took aeronautics from the subsonic to the hypersonic era.-publisher description.
Book Synopsis The Sandia Pulsed Reactor Facility (SPRF) by : P. D. O'Brien
Download or read book The Sandia Pulsed Reactor Facility (SPRF) written by P. D. O'Brien and published by . This book was released on 1962 with total page 46 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Sandia Pulsed Reactor Facility (SPRF) is a laboratory facility specifically designed for radiation effects experiments which require an intense pulse of fast neutrons and gamma rays.
Book Synopsis Integrated Natural Resources Management by : Lawrence K. Wang
Download or read book Integrated Natural Resources Management written by Lawrence K. Wang and published by Springer Nature. This book was released on 2021-02-11 with total page 447 pages. Available in PDF, EPUB and Kindle. Book excerpt: This edited book has been designed to serve as a natural resources engineering reference book as well as a supplemental textbook. This volume is part of the Handbook of Environmental Engineering series, an incredible collection of methodologies that study the effects of resources and wastes in their three basic forms: gas, solid, and liquid. It complements two other books in the series including "Natural Resources and Control Processes" and "Environmental and Natural Resources Engineering". Together they serve as a basis for advanced study or specialized investigation of the theory and analysis of various natural resources systems. The purpose of this book is to thoroughly prepare the reader for understanding the topics of global warming, climate change, glacier melting, salmon protection, village-driven latrines, engineers without borders (USA), surface water quality analysis, electrical and electronic wastes treatment, water quality control, tidal rivers and estuaries, geographic information systems, remote sensing applications, water losses investigations, wet infrastructure, lake restoration, acidic water control, biohydrogen production, mixed culture dark anaerobic fermentation, industrial waste recycle, agricultural waste recycle, recycled adsorbents, heavy metals removal, magnetic technology, recycled biohydrogen materials, lignocellulosic biomass, extremely halotolerant bacterial communities, salt pan and salt damaged soil. The chapters provide information on some of the most innovative and ground-breaking advances in resources conversation, protection, recycling, and reuse from a panel of esteemed experts.
Book Synopsis Flying Saucers, Serious Business by : Frank Edwards
Download or read book Flying Saucers, Serious Business written by Frank Edwards and published by . This book was released on 2017 with total page 184 pages. Available in PDF, EPUB and Kindle. Book excerpt: In "Flying Saucers - Serious Business," America's most popular paranormal spokesperson, Frank Edwards, collates the latest information on UFOs and theorizes about the shocking possible conclusions, including what the next UFO phase might be and its implications for the future of the human race.
