Download or read book Evaluation of Afterburning Cessation Mechanisms in Fuel Rich Rocket Exhaust Plumes written by and published by . This book was released on 1998 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt: A computational study was conducted to identify fundamental physical processes governing the cessation or shutdown of the afterburning of fuel rich rocket exhaust with the atmosphere. Several mechanisms that have been proposed were examined which are: 1) a relaminarization phenomenon, 2) a Damkoehler number effect and 3) a classical flame extinction mechanism. Analysis of the simulation results revealed the relaminarization mechanism to be implausible while the Damkoehler number effect and the flame extinction mechanisms were found to be valid. The extinction mechanism was also found to dramatically alter the emission characteristics and enhance the shutdown behavior which has important implications with respect to radiative heat transfer to the body and missile intercept systems. This is a significant finding because strain rate induced extinction is a previously unrecognized phenomena occurring in rocket exhaust plumes during afterburning cessation.
Download or read book Evaluation of Afterburning Cessation Mechanisms in Fuel Rich Rocket Exhaust Plumes written by and published by . This book was released on 1998 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt: A computational study was conducted to identify fundamental physical processes governing the cessation or shutdown of the afterburning of fuel rich rocket exhaust with the atmosphere. Several mechanisms that have been proposed were examined which are: 1) a relaminarization phenomenon, 2) a Damkoehler number effect and 3) a classical flame extinction mechanism. Analysis of the simulation results revealed the relaminarization mechanism to be implausible while the Damkoehler number effect and the flame extinction mechanisms were found to be valid. The extinction mechanism was also found to dramatically alter the emission characteristics and enhance the shutdown behavior which has important implications with respect to radiative heat transfer to the body and missile intercept systems. This is a significant finding because strain rate induced extinction is a previously unrecognized phenomena occurring in rocket exhaust plumes during afterburning cessation.
Download or read book Computational Assessment of Afterburning Cessation Mechanisms in Fuel Rich Rocket Exhaust Plumes written by and published by . This book was released on 1998 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt: A computational study was conducted to identify fundamental physical processes governing the cessation or shutdown of the afterburning of fuel rich rocket exhaust with the atmosphere. Several mechanisms were examined which are: 1) a relaminarization phenomenon, 2) a Damkohler number effect and 3) a classical flame extinction mechanism. Analysis of the simulation results revealed the relaminarization mechanism to be implausible while the Damkohler number effect and the flame extinction mechanisms were found to be valid. The extinction mechanism was also found to dramatically alter the emission characteristics and enhance the shutdown behavior which has important implications with respect to radiative heat transfer to the body and missile defense systems. This is a significant finding because strain rate induced extinction is a previously unrecognized phenomena occurring in rocket exhaust plumes during afterburning cessation.
Download or read book 34th AIAA ASME SAE ASEE Joint Propulsion Conference Exhibit written by and published by . This book was released on 1998 with total page 578 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Safety Design for Space Systems written by Tommaso Sgobba and published by Elsevier. This book was released on 2023-07-25 with total page 1190 pages. Available in PDF, EPUB and Kindle. Book excerpt: The lack of widespread education in space safety engineering and management has profound effects on project team effectiveness in integrating safety during design. On one side, it slows down the professional development of junior safety engineers, while on the other side it creates a sectarian attitude that isolates safety engineers from the rest of the project team. To speed up professional development, bridge the gap within the team, and prevent hampered communication and missed feedback, the entire project team needs to acquire and develop a shared culture of space safety principles and techniques.The second edition of Safety Design for Space Systems continues to address these issues with substantial updates to chapters such as battery safety, life support systems, robotic systems safety, and fire safety. This book also features new chapters on crew survivability design and nuclear space systems safety. Finally, the discussion of human rating concepts, safety-by-design principles, and safety management practices have also been revised and improved. With contributions from leading experts worldwide, this second edition represents an essential educational resource and reference tool for engineers and managers working on space projects. - Provides basic multidisciplinary knowledge on space systems safety design - Addresses how space safety engineering and management can be implemented in practice - Includes new chapters on crew survivability design and nuclear space systems safety - Fully revised and updated to reflect the latest developments in the field
Download or read book Rocket Exhaust Plume Phenomenology written by Frederick S. Simmons and published by AIAA (American Institute of Aeronautics & Astronautics). This book was released on 2000 with total page 312 pages. Available in PDF, EPUB and Kindle. Book excerpt: This new book deals with the phenomenology of rocket exhaust plumes as the targets of space-based surveillance systems. Topics include the physical and chemical processes in rocket engines and their exhaust plumes, particularly in regard to flow properties, gas dynamics, and radiative mechanisms that are responsible for the generation of emission in rocket exhaust plumes at infrared and other wavelengths. System designers in a number of defense-related areas will be able to put the information in this book to immediate use.
Download or read book International Aerospace Abstracts written by and published by . This book was released on 1998 with total page 980 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Combined Experimental analytical Investigation of Afterburning Solid Rocket Exhaust Plume Properties to Improve Signature Level Prediction Capability written by and published by . This book was released on 1990 with total page 190 pages. Available in PDF, EPUB and Kindle. Book excerpt: Describes experimental work performed on a high-speed pre-mixed hydrogen-air jet flame in a co-flowing annular air flow in the presence and absence of base flow at the exit. Includes details on the high-speed flame in a coaxial air facility which was designed, built, and tested to simulate (in a first approximation) rocket exhaust flow conditions. In addition, a new high spatial resolution computer-controlled three-dimensional gear was built to traverse the investigated flow field. The main experimental tool was a two-dimensional laser Doppler velocimeter with data acquisition and processing system. The tool was used to measure the two main velocity components. Other measurements included turbulence intensities and mean temperatures at various downstream sections. The measured initial and flow field data will serve to evaluate the validity of various turbulence models and to predict the structure of rocket exhaust plumes. Moreover, the experiments established the effect of the base flow on the turbulence structure of the exhaust plume.
Download or read book Mechanisms of Chemical Suppression of Rocket Exhaust Afterburning written by Leslie Glen McMillion and published by . This book was released on 1990 with total page 200 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Theory on Afterburning in a Low altitude Rocket Exhaust Plume written by Richard Shao-Lin Lee and published by . This book was released on 1968 with total page 59 pages. Available in PDF, EPUB and Kindle. Book excerpt: An improved aerodynamic model is proposed for the exhaust plume issuing from a low-altitude rocket nozzle exit into quiescent ambient air in which chemical reactions and compressibility predominate. The model is based on the presently available knowledge and established aerodynamic principles for the various flow regimes involved. The major assumptions made are individually substantiated by related experimental evidence in existing literature. A theoretical analysis is carried over the whole flow region based on the Karman's integral approach to find solutions for the gross aerodynamic and thermodynamic behavior of the plume. Theory incorporating on empirically derived constants provides the required radial distribution function for the integration. Solutions are obtained for the velocity, density, temperature and chemical composition fields for extended regions of the plume. These results will provide the much needed framework for the understanding of the elements which contribute to the phenomenon of radar attenuation of rocket exhaust plumes. (Author).
Download or read book Afterburning Suppression Kinetics written by T. S. Singh and published by . This book was released on 1987 with total page 47 pages. Available in PDF, EPUB and Kindle. Book excerpt: The inhibition effect of KOH in H2/O2/N2 flames has been studied theoretically. The effect of addition of KOH on laminar burning velocity, peak mole fraction for H and OH, the rate of fuel and oxidizer decay, the rate of production of product species, and the rate of temperature rise has been studied. Computations have been performed for both fuel rich and fuel lean flames. The effect of uncertainties in the data base for rate constants used in the computations has been investigated. Two simplified reaction mechanisms are presented. Comparison of results with experimental data is presented. Keywords: Potassium hydroxide; Hydrogen oxygen flames; Burning rate; Reaction kinetics; Lean fuels; Rich fuels; Hydroxyl radicals; Rate constants; Afterburning; suppression; Rocket exhaust plumes; Potassium salts; Hydrobromic acid; and Fuel additives.
Download or read book Chemical Abstracts written by and published by . This book was released on 2002 with total page 2626 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 Understanding Aerospace Chemical Propulsion written by H. S. Mukunda and published by . This book was released on 2017-02-28 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Explores aeronautical and space chemical propulsion. The book provides an understanding of propulsion systems through illustrative description of the systems; analysis of modeled systems; examination of the performance of real systems in this light; and a comparative assessment of aeronautical and space propulsion system elements.
Download or read book Modern Engineering for Design of Liquid Propellant Rocket Engines written by Dieter K. Huzel and published by AIAA. This book was released on 1992 with total page 452 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Smell of Kerosene written by National Aeronautics and Space Administration and published by DigiCat. This book was released on 2022-11-13 with total page 276 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book puts the reader in the pilot's seat for a "day at the office" unlike any other. The Smell of Kerosene tells the dramatic story of a NASA research pilot who logged over 11,000 flight hours in more than 125 types of aircraft. Donald Mallick gives the reader fascinating first-hand description of his early naval flight training, carrier operations, and his research flying career with NASA. After transferring to the NASA Flight Research Center, Mallick became involved with projects that further pushed the boundaries of aerospace technology. These included the giant delta-winged XB-70 supersonic airplane, the wingless M2-F1 lifting body vehicle, and triple-sonic YF-12 Blackbird. Mallick also test flew the Lunar Landing Research Vehicle and helped develop techniques used in training astronauts to land on the Moon.
Download or read book Liquid Hydrogen as a Propulsion Fuel 1945 1959 written by John L. Sloop and published by . This book was released on 1978 with total page 350 pages. Available in PDF, EPUB and Kindle. Book excerpt:
