Download or read book Fundamental Phenomena on Fuel Decomposition and Boundary Layer Combustion Processes with Applications to Hybrid Rocket Motors written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-07-03 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt: The experimental study on the fundamental processes involved in fuel decomposition and boundary-layer combustion in hybrid rocket motors is continuously being conducted at the High Pressure Combustion Laboratory of The Pennsylvania State University. This research will provide a useful engineering technology base in the development of hybrid rocket motors as well as a fundamental understanding of the complex processes involved in hybrid propulsion. A high-pressure, 2-D slab motor has been designed, manufactured, and utilized for conducting seven test firings using HTPB fuel processed at PSU. A total of 20 fuel slabs have been received from the Mcdonnell Douglas Aerospace Corporation. Ten of these fuel slabs contain an array of fine-wire thermocouples for measuring solid fuel surface and subsurface temperatures. Diagnostic instrumentation used in the test include high-frequency pressure transducers for measuring static and dynamic motor pressures and fine-wire thermocouples for measuring solid fuel surface and subsurface temperatures. The ultrasonic pulse-echo technique as well as a real-time x-ray radiography system have been used to obtain independent measurements of instantaneous solid fuel regression rates. Kuo, Kenneth K. and Lu, Yeu-Cherng and Chiaverini, Martin J. and Harting, George C. and Johnson, David K. and Serin, Nadir Unspecified Center NAS8-39945...
Download or read book Fundamental Phenomena on Fuel Decomposition and Boundary Layer Combustion Precesses with Applications to Hybrid Rocket Motors Part 1 Experimental Investigation 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 170 pages. Available in PDF, EPUB and Kindle. Book excerpt: This final report summarizes the major findings on the subject of 'Fundamental Phenomena on Fuel Decomposition and Boundary-Layer Combustion Processes with Applications to Hybrid Rocket Motors', performed from 1 April 1994 to 30 June 1996. Both experimental results from Task 1 and theoretical/numerical results from Task 2 are reported here in two parts. Part 1 covers the experimental work performed and describes the test facility setup, data reduction techniques employed, and results of the test firings, including effects of operating conditions and fuel additives on solid fuel regression rate and thermal profiles of the condensed phase. Part 2 concerns the theoretical/numerical work. It covers physical modeling of the combustion processes including gas/surface coupling, and radiation effect on regression rate. The numerical solution of the flowfield structure and condensed phase regression behavior are presented. Experimental data from the test firings were used for numerical model validation. Kuo, Kenneth K. and Lu, Yeu-Cherng and Chiaverini, Martin J. and Johnson, David K. and Serin, Nadir and Risha, Grant A. and Merkle, Charles L. and Venkateswaran, Sankaran Marshall Space Flight Center HYBRID ROCKET ENGINES; PROPULSION SYSTEM PERFORMANCE; DUCTED ROCKET ENGINES; COMBUSTION PHYSICS; BOUNDARY LAYERS; FUEL COMBUSTION; TEST FACILITIES; FLOW DISTRIBUTION; SOLID PROPELLANTS; REACTION KINETICS...
Download or read book Fuel Decomposition and Boundary layer Combustion Processes of Hybrid Rocket Motors written by Martin J. Chiaverini and published by . This book was released on 1995 with total page 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 1995 with total page 994 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Sixth Annual Symposium written by NASA Propulsion Engineering Research Center. Symposium and published by . This book was released on 1994 with total page 230 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Monthly Catalog of United States Government Publications written by and published by . This book was released on 1996-07 with total page 1002 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book 34th Aerospace Sciences Meeting Exhibit written by and published by . This book was released on 1996 with total page 694 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Advances in IC Engines and Combustion Technology written by Ashwani K. Gupta and published by Springer Nature. This book was released on 2020-08-18 with total page 939 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book comprises select peer-reviewed proceedings of the 26th National Conference on IC Engines and Combustion (NCICEC) 2019 which was organised by the Department of Mechanical Engineering, National Institute of Technology Kurukshetra under the aegis of The Combustion Institute-Indian Section (CIIS). The book covers latest research and developments in the areas of combustion and propulsion, exhaust emissions, gas turbines, hybrid vehicles, IC engines, and alternative fuels. The contents include theoretical and numerical tools applied to a wide range of combustion problems, and also discusses their applications. This book can be a good reference for engineers, educators and researchers working in the area of IC engines and combustion.
Download or read book Government Reports Announcements Index written by and published by . This book was released on 1995 with total page 824 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book 35th AIAA ASME SAE ASEE Joint Propulsion Conference and Exhibit written by and published by . This book was released on 1999 with total page 442 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Mechanical Engineering News written by and published by . This book was released on 1994 with total page 188 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Propellants and Explosives written by Naminosuke Kubota and published by John Wiley & Sons. This book was released on 2015-06-22 with total page 560 pages. Available in PDF, EPUB and Kindle. Book excerpt: This third edition of the classic on the thermochemical aspects of the combustion of propellants and explosives is completely revised and updated and now includes a section on green propellants and offers an up-to-date view of the thermochemical aspects of combustion and corresponding applications. Clearly structured, the first half of the book presents an introduction to pyrodynamics, describing fundamental aspects of the combustion of energetic materials, while the second part highlights applications of energetic materials, such as propellants, explosives and pyrolants, with a focus on the phenomena occurring in rocket motors. Finally, an appendix gives a brief overview of the fundamentals of aerodynamics and heat transfer, which is a prerequisite for the study of pyrodynamics. A detailed reference for readers interested in rocketry or explosives technology.
Download or read book Technical Abstract Bulletin written by Defense Documentation Center (U.S.) and published by . This book was released on 1963 with total page 824 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fundamentals of Rocket Propulsion written by DP Mishra and published by CRC Press. This book was released on 2017-07-20 with total page 364 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book follows a unified approach to present the basic principles of rocket propulsion in concise and lucid form. This textbook comprises of ten chapters ranging from brief introduction and elements of rocket propulsion, aerothermodynamics to solid, liquid and hybrid propellant rocket engines with chapter on electrical propulsion. Worked out examples are also provided at the end of chapter for understanding uncertainty analysis. This book is designed and developed as an introductory text on the fundamental aspects of rocket propulsion for both undergraduate and graduate students. It is also aimed towards practicing engineers in the field of space engineering. This comprehensive guide also provides adequate problems for audience to understand intricate aspects of rocket propulsion enabling them to design and develop rocket engines for peaceful purposes.
Download or read book Hybrid Combustion Analysis Via Laser Absorption Spectroscopy for Rocket Propulsion and Fire Environments written by Isabelle Sanders and published by . This book was released on 2023 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This dissertation details novel experimental methods and analytical techniques developed to characterize hybrid combustion of solid fuels with gaseous oxidizers. The primary focus of this work is on hybrid rocket motors, which are less developed than liquid and solid fuel chemical propulsion systems. Historically poor performance of hybrid propulsion systems is attributed, in part, to combustion efficiencies below theoretical limits, hindering hybrid rocket development and motivating experimental and modeling studies to explain shortcomings. Combustion in such systems is typified by a turbulent reacting boundary layer above the fuel surface that involves a convolution of fluid dynamics, heat transfer, and chemical kinetics. Although modeling efforts have advanced significantly in recent years, there remains a lack of quantitative data, particularly in-situ in the reacting flow regions, that are necessary to validate combustion models and make definitive assessments of the reacting boundary layer flow-field. Optical diagnostics have become invaluable tools for obtaining such data due to their non-intrusive nature and their capability in harsh combustion environments. For much of the research detailed herein, an axisymmetric solid fuel burner was used to examine the near-surface reaction layer via spatially-resolved measurements using laser absorption tomographic methods. The data obtained from these experiments were compared to relevant multi-physics combustion models. The hybrid rocket motor experiments discussed in this dissertation primarily involve polymethyl methacrylate (PMMA) as the fuel with gaseous oxygen. The solid fuel burner and laser diagnostic sensors were used to assess hybrid PMMA/GOx combustion as influenced by differing oxidizer injector geometries, those including both axial and swirl varieties. Two-dimension quantitative measurements of species and temperature provided crucial comparisons to theorized and modelled thermochemical structure evolution. Additionally, the injector specific findings highlight the sensitivity of the combustion performance to motor geometry and quantify the utility of introducing incipient swirling flow into the combustion chamber. Significant discrepancies were observed between reactive flow modeling and the 2D experimental results for hybrid combustion of polymethyl methacrylate (PMMA) in gaseous oxidizer cross-flow, prompting a fundamental shock-tube chemical kinetic studies of the monomer, methyl methacrylate (MMA), that involved measuring time evolution of intermediate and product species. This additional data was used to improve the existing chemical kinetic mechanisms by modifying Arrhenius rate parameters of sensitive reactions via genetic algorithm optimization anchored to the speciation measurements. The aforementioned spectroscopic, experimental, and analysis techniques designed for hybrid rocket propulsion were also extended to study hybrid combustion of the fire-resistant polymer polytetrafluorethylene (PTFE) in oxidizer-cross flow to help inform toxicant predictions in structural fires and develop useful sensors for fire safety. It is envisioned that the data in this dissertation will be used to anchor and improve reacting flow models relevant to both hybrid rocket propulsion and fire safety. The sensors, experimental facilities, and analysis procedures can also be further employed in the future to study a wide range of solid fuels across combustion applications.
Download or read book Research and Technology Program Digest written by United States. National Aeronautics and Space Administration and published by . This book was released on with total page 792 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Research and Technology Program Digest Flash Index written by and published by . This book was released on 1967 with total page 794 pages. Available in PDF, EPUB and Kindle. Book excerpt:
