Download or read book Low Noise Propeller Technology written by Edward D. Griffith and published by . This book was released on 1973 with total page 185 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Low Noise Propeller Technology Demonstration Pt 1 and 2 written by Edward J. Griffith and published by . This book was released on 1974 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Low Noise Propeller Technology Demonstration written by Edward D. Griffith and published by . This book was released on 1973 with total page 202 pages. Available in PDF, EPUB and Kindle. Book excerpt: Quiet aircraft used for covert aerial night reconnaissance employ low tip speed propellers to achieve a minimum acoustic noise signature. This study was initiated when certain unexpected and anomalous trends in the measured propeller noise of such aircraft were compared to predictions of noise made by the Air Force Propeller Noise Prediction Program. Large discrepancies in both trends and levels were noted between measured and predicted noise. Therefore, the goal of this study was the modification of an existing Air Force computer program such that accurate predictions of far field noise for low tip speed propellers can be made. Empirical data from previous quiet airplane experiments were used to develop modifications to both rotational and vortex noise prediction methods for propellers operating in the tip speed range from Mach 0.2 to 0.4.

Download or read book An Assessment of Propeller Aircraft Noise Reduction Technology written by and published by . This book was released on 1995 with total page 130 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book An Assessment of Propeller Aircraft Noise Reduction Technology written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-07-17 with total page 124 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report is a review of the literature regarding propeller airplane far-field noise reduction. Near-field and cabin noise reduction are not specifically addressed. However, some of the approaches used to reduce far-field noise produce beneficial effects in the near-field and in the cabin. The emphasis is on propeller noise reduction but engine exhaust noise reduction by muffling is also addressed since the engine noise becomes a significant part of the aircraft noise signature when propeller noise is reduced. It is concluded that there is a substantial body of information available that can be used as the basis to reduce propeller airplane noise. The reason that this information is not often used in airplane design is the associated weight, cost, and performance penalties. It is recommended that the highest priority be given to research for reducing the penalties associated with lower operating RPM and propeller diameter while increasing the number of blades. Research to reduce engine noise and explore innovative propeller concepts is also recommended. Metzger, F. Bruce Unspecified Center AIRCRAFT DESIGN; AIRCRAFT ENGINES; AIRCRAFT NOISE; ENGINE NOISE; FAR FIELDS; NOISE REDUCTION; PROPELLER NOISE; PROPELLERS; AIRCRAFT COMPARTMENTS; ASSESSMENTS; COSTS; MUFFLERS; NEAR FIELDS; ROTOR SPEED; WEIGHT REDUCTION...

Download or read book Marine Propellers and Propulsion written by John Carlton and published by Butterworth-Heinemann. This book was released on 2012-10-30 with total page 539 pages. Available in PDF, EPUB and Kindle. Book excerpt: The early development of the screw propeller. Propeller geometry. The propeller environment. The ship wake field, propeller performance characteristics.

Download or read book Aero Propulsion Technology Apt Task V Low Noise Adp Engine Definition Study written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-05-29 with total page 74 pages. Available in PDF, EPUB and Kindle. Book excerpt: A study was conducted to identify and evaluate noise reduction technologies for advanced ducted prop propulsion systems that would allow increased capacity operation and result in an economically competitive commercial transport. The study investigated the aero/acoustic/structural advancements in fan and nacelle technology required to match or exceed the fuel burned and economic benefits of a constrained diameter large Advanced Ducted Propeller (ADP) compared to an unconstrained ADP propulsion system with a noise goal of 5 to 10 EPNDB reduction relative to FAR 36 Stage 3 at each of the three measuring stations namely, takeoff (cutback), approach and sideline. A second generation ADP was selected to operate within the maximum nacelle diameter constrain of 160 deg to allow installation under the wing. The impact of fan and nacelle technologies of the second generation ADP on fuel burn and direct operating costs for a typical 3000 nm mission was evaluated through use of a large, twin engine commercial airplane simulation model. The major emphasis of this study focused on fan blade aero/acoustic and structural technology evaluations and advanced nacelle designs. Results of this study have identified the testing required to verify the interactive performance of these components, along with noise characteristics, by wind tunnel testing utilizing and advanced interaction rig.Holcombe, V.Glenn Research CenterLOW NOISE; SHROUDED PROPELLERS; AEROACOUSTICS; TURBOFAN ENGINES; WIND TUNNEL TESTS; AIRCRAFT DESIGN; PROPULSION SYSTEM CONFIGURATIONS; DUCTED FANS; PROPULSION SYSTEM PERFORMANCE; ENGINE DESIGN; NACELLES; NOISE REDUCTION; BYPASS RATIO; THRUST

Download or read book Federal Aircraft Noise Research Development and Demonstration Programs FY73 FY75 written by Interagency Aircraft Noise Research Panel and published by . This book was released on 1975 with total page 232 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1992 with total page 316 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Technical Information Indexes written by United States. Naval Air Systems Command and published by . This book was released on 1975 with total page 152 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Federal Aviation Noise Policy written by United States. Congress. House. Committee on Public Works and Transportation. Subcommittee on Aviation and published by . This book was released on 1991 with total page 1110 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Research Reporting Series written by and published by . This book was released on 1975 with total page 826 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book EPA 550 9 written by and published by . This book was released on 1975 with total page 640 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Mastering Drone Technology with AI written by Dr. Subhash K. Shinde and published by BPB Publications. This book was released on 2024-09-30 with total page 480 pages. Available in PDF, EPUB and Kindle. Book excerpt: DESCRIPTION "Mastering Drone Technology with AI" is a detailed guide to the transformational power of AI in drone technology. It investigates how AI is transforming numerous elements of drone operations, from navigation and flight automation to data analysis and decision-making processes. The book gives readers a thorough knowledge of cutting-edge advancements including Machine Learning, computer vision, and autonomous flight systems, making it an indispensable resource for anybody interested in the convergence of AI and unmanned aerial vehicles (UAVs). This book is a valuable resource for professionals in agriculture, logistics, surveillance, and environmental monitoring looking to integrate AI-powered drones into their work. It offers step-by-step guides and practical projects to help readers gain the skills needed to excel. By exploring the latest advancements and strategies, professionals can stay competitive in this rapidly evolving field. The book also covers safety and regulatory issues, ensuring that AI-equipped drones are used ethically and legally. By promoting a thorough awareness of both the theoretical and practical elements of AI in drone technology, the book enables professionals to innovate and lead in their respective sectors. KEY FEATURES ● Examine how AI transforms drones through advanced algorithms for navigation, automation, and data analysis. ● The book provides real-world examples of AI-enhanced drones in agriculture, logistics, and surveillance, along with insights into safety standards and regulations. ● It offers interactive learning through quizzes, case studies, and projects, plus resources for developers to create AI-powered drone solutions. WHAT YOU WILL LEARN ● Understand the basic components, types, and flying mechanisms of drones. ● Learn how AI enhances drone capabilities like object detection, navigation, and decision-making. ● Explore real-world uses of AI in drones for agriculture, surveillance, delivery, and environmental monitoring. ● Gain awareness of legal and ethical issues, including airspace regulations and privacy concerns. ● Get insights into future trends in drone technology and AI to stay ahead in this fast-growing industry. WHO THIS BOOK IS FOR The target audience for this book includes undergraduate students from diverse academic backgrounds, including engineering, life sciences, mathematics, and technology. Additionally, it is beneficial for drone enthusiasts, tech experts, students, educators, industry professionals, academics, entrepreneurs, and policymakers interested in integrating AI with drones for a variety of applications. TABLE OF CONTENTS 1. Introduction to Drones 2. Drone/UAV Design and Development 3. Quadrotors and Drone Programming 4. Drone Operations Optimizations 5. AI Integration in Drone Technology 6. Drone Security 7. Drones for Environmental Science 8. Drones for Smart Cities 9. Case Studies of Drone Applications 10. Future Trends in Drone Technology

Download or read book First Report on Status and Progress of Noise Research and Control Programs in the Federal Government written by United States. Office of Noise Abatement and Control and published by . This book was released on 1975 with total page 924 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Departments of Veterans Affairs and Housing and Urban Development and Independent Agencies Appropriations for 1995 National Aeronautics and Space Administration written by United States. Congress. House. Committee on Appropriations. Subcommittee on VA, HUD, and Independent Agencies and published by . This book was released on 1994 with total page 824 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Military Critical Technologies List written by and published by . This book was released on 1986 with total page 282 pages. Available in PDF, EPUB and Kindle. Book excerpt: