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Author : G. K. Platt
Publisher :
ISBN 13 :
Total Pages : 5 pages
Book Rating : 4.:/5 (346 download)
Download or read book Feed System Problems Associated with Cryogenic Propellant Engines written by G. K. Platt and published by . This book was released on 1963 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 298 pages
Book Rating : 4.:/5 (31 download)
Download or read book Cryogenic Propellant Feed Systems for Electrothermal Engines written by and published by . This book was released on 1964 with total page 298 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : S.B. Vishnu
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (139 download)
Download or read book Effect of Roughness Elements on the Evolution of Thermal Stratification in a Cryogenic Propellant Tank written by S.B. Vishnu and published by . This book was released on 2019 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The cryogenic propulsion era started with the use of liquid rockets. These rocket engines use propellants in liquid form with reasonably high density, allowing reduced tank size with a high mass ratio. Cryogenic engines are designed for liquid fuels that have to be held in liquid form at cryogenic temperature and gas at normal temperatures. Since propellants are stored at their boiling temperature or subcooled condition, minimal heat infiltration itself causes thermal stratification and self-pressurization. Due to stratification, the state of propellant inside the tank varies, and it is essential to keep the propellant properties in a predefined state for restarting the cryogenic engine after the coast phase. The propellant,Äôs condition at the inlet of the propellant feed system or turbo pump must fall within a narrow range. If the inlet temperature is above the cavitation value, cavitation will likely to happen to result in the probable destruction of the flight vehicle. The present work aims to find an effective method to reduce the stratification phenomenon in a cryogenic storage tank. From previous studies, it is observed that the shape of the inner wall surface of the storage tank plays an essential role in the development of the stratified layer. A CFD model is established to predict the rate of self-pressurization in a liquid hydrogen container. The Volume of Fluid (VOF) method is used to predict the liquid,Äìvapor interface movement, and the Lee phase change model is adopted for evaporation and condensation calculations. A detailed study has been conducted on a cylindrical storage tank with an iso grid and rib structure. The development of the stratified layer in the presence of iso grid and ribs are entirely different. The buoyancy-driven free convection flow over iso grid structure result in velocity and temperature profile that differs significantly from a smooth wall case. The thermal boundary layer was always more significant for iso grid type obstruction, and these obstructions induces streamline deflection and recirculation zones, which enhances heat transfer to bulk liquid. A larger self-pressurization rate is observed for tanks with an iso grid structure. The presence of ribs results in the reduction of upward buoyancy flow near the tank surface, whereas streamline deflection and recirculation zones were also perceptible. As the number of ribs increases, it nullifies the effect of the formation of recirculation zones. Finally, a maximum reduction of 32.89% in the self-pressurization rate is achieved with the incorporation of the rib structure in the tank wall.
Author : K. D. Timmerhaus
Publisher : Springer Science & Business Media
ISBN 13 : 1468431080
Total Pages : 524 pages
Book Rating : 4.4/5 (684 download)
Download or read book Advances in Cryogenic Engineering written by K. D. Timmerhaus and published by Springer Science & Business Media. This book was released on 2013-03-08 with total page 524 pages. Available in PDF, EPUB and Kindle. Book excerpt: Support from the National Science Foundation has made it possible for the tenth annual Cryogenic Engineering Conference, hosted by the University of Pennsylvania and capably directed by K. R. Atkins and his staff, to emphasize the major international advances in cryogenic engineering. This specific emphasis resulted in a final program of over one hundred papers and has made it necessary to publish the proceedings of the conference in two volumes. The first volume will be similar in nature to previous volumes in this series, while the second volume will feature the international aspect of the conference program. The latter volume, because of this distinction, will be entitled International Advances in Cryogenic Engineering. As in the past, the Cryogenic Engineering Conference Committee gratefully acknow ledges the assistance of all the dedicated workers in the cryogenic field who have contributed their time in reviewing the preliminary papers for the program and the final manuscripts for this volume. Since the list of participants in this thankless task numbers well over one hundred, any attempt to acknowledge their individual contributions in the limited space available would be practically impossible.
Author : United States. National Aeronautics and Space Administration Scientific and Technical Information Division
Publisher :
ISBN 13 :
Total Pages : 1152 pages
Book Rating : 4.F/5 ( download)
Download or read book NASA Scientific and Technical Reports written by United States. National Aeronautics and Space Administration Scientific and Technical Information Division and published by . This book was released on 1965 with total page 1152 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher : Academic Press
ISBN 13 : 0080575595
Total Pages : 551 pages
Book Rating : 4.0/5 (85 download)
Download or read book Advances in Heat Transfer written by and published by Academic Press. This book was released on 1968 with total page 551 pages. Available in PDF, EPUB and Kindle. Book excerpt: Advances in Heat Transfer
Author :
Publisher :
ISBN 13 :
Total Pages : 502 pages
Book Rating : 4.3/5 (91 download)
Download or read book SAE Technical Paper Series written by and published by . This book was released on 1963 with total page 502 pages. Available in PDF, EPUB and Kindle. Book excerpt: Online version: Technical papers portion of the SAE Digital Library references thousands of SAE Technical Papers covering the latest advances and research in all areas of mobility engineering including ground vehicle, aerospace, off-highway, and manufacturing technology. Sample coverage includes fuels and lubricants, emissions, electronics, brakes, restraint systems, noise, engines, materials, lighting, and more. Your SAE service includes detailed summaries, complete documents in PDF, plus document storage and maintenance
Author : Laurence De Quay
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (664 download)
Download or read book Validated Prediction of Pressurant Gas Requirements in Cryogenic Run Tanks at Subcritical and Supercritical Pressures written by Laurence De Quay and published by . This book was released on 2009 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The development, testing, and use of liquid propellant and hybrid rocket propulsion systems for spacecraft and their launch vehicles routinely involves the use of cryogenic propellants. These propellants provide high energy densities that enable high propulsive efficiency and high engine thrust to vehicle weight ratios. However, use of cryogenic propellants also introduces technical problems not associated with other types of propellants. One of the major technical problems is the phenomenon of propellant tank pressurant and ullage gas collapse. This collapse is mainly caused by heat transfer from most of the ullage gas to tank walls and interfacing propellant, which are both at temperatures well below those of this gas. Pressurant gas is supplied into cryogenic propellant tanks in order to initially pressurize these tanks and then to maintain required pressures as propellant is expelled from these tanks. The cryogenic propellants expelled from the tanks feed rocket engine assemblies, subassemblies, and components at required interface pressures and mass flow rates. The net effect of pressurant and ullage gas collapse is increased total mass and mass flow rate requirements of pressurant gases. For flight vehicles this leads to significant and undesirable weight penalties. For rocket engine component and subassembly ground test facilities this results in high construction and operational cost impacts. Accurate predictions of pressurant gas mass transfer and flow rate requirements are essential to the proper design of systems used to supply these gases to cryogenic propellant tanks. While much work has been done in the past for predicting these gas requirements at low subcritical tank pressures, very little has been done at supercritical tank pressure conditions and there are selected cases where errors of analytical predictions are high. The objectives of this study are to develop a new generalized and improved computer program to determine pressurant gas requirements at both subcritical and supercritical tank pressure conditions, and then evaluate and validate the consistent accuracy of this program over a wide range of conditions by comparison of program results to empirical data.
Author : DP Mishra
Publisher : CRC Press
ISBN 13 : 1351708414
Total Pages : 364 pages
Book Rating : 4.3/5 (517 download)
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.
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Author :
Publisher :
ISBN 13 :
Total Pages : 788 pages
Book Rating : 4.:/5 (319 download)
Download or read book Society of Automotive Engineers [preprints]. written by and published by . This book was released on 1963 with total page 788 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 910 pages
Book Rating : 4.:/5 (31 download)
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1991 with total page 910 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : United States. Congress Senate
Publisher :
ISBN 13 :
Total Pages : 2602 pages
Book Rating : 4.3/5 (511 download)
Download or read book Report written by United States. Congress Senate and published by . This book was released on with total page 2602 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : H. J. Ellis
Publisher :
ISBN 13 :
Total Pages : 156 pages
Book Rating : 4.:/5 (317 download)
Download or read book Liquid Rocket Valve Components written by H. J. Ellis and published by . This book was released on 1973 with total page 156 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : United States. Congress. House. Committee on Science and Astronautics
Publisher :
ISBN 13 :
Total Pages : 1090 pages
Book Rating : 4.0/5 (18 download)
Download or read book 1968 NASA Authorization written by United States. Congress. House. Committee on Science and Astronautics and published by . This book was released on 1967 with total page 1090 pages. Available in PDF, EPUB and Kindle. Book excerpt: Committee Serial No. 2. Considers H.R. 4450 and H.R. 6470, superseded by H.R. 10340, to provide FY68 authorizations for NASA RPD programs, including the Apollo Program, for construction of facilities at field centers, and for administrative operations.
Author : Zhen-Guo Wang
Publisher : John Wiley & Sons
ISBN 13 : 1118890051
Total Pages : 509 pages
Book Rating : 4.1/5 (188 download)
Download or read book Internal Combustion Processes of Liquid Rocket Engines written by Zhen-Guo Wang and published by John Wiley & Sons. This book was released on 2016-05-17 with total page 509 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book concentrates on modeling and numerical simulations of combustion in liquid rocket engines, covering liquid propellant atomization, evaporation of liquid droplets, turbulent flows, turbulent combustion, heat transfer, and combustion instability. It presents some state of the art models and numerical methodologies in this area. The book can be categorized into two parts. Part 1 describes the modeling for each subtopic of the combustion process in the liquid rocket engines. Part 2 presents detailed numerical methodology and several representative applications in simulations of rocket engine combustion.
Author :
Publisher :
ISBN 13 :
Total Pages : 668 pages
Book Rating : 4.:/5 (317 download)
Download or read book Liquid Propellant Rocket Combustion Instability written by and published by . This book was released on 1972 with total page 668 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Dieter K. Huzel
Publisher : AIAA
ISBN 13 : 9781600864001
Total Pages : 452 pages
Book Rating : 4.8/5 (64 download)
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:
