Download or read book Microfabricated Liquid Rocket Motors written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-06-27 with total page 202 pages. Available in PDF, EPUB and Kindle. Book excerpt: Under NASA Glenn Research Center sponsorship, MIT has developed the concept of micromachined, bipropellant, liquid rocket engines. This is potentially a breakthrough technology changing the cost-performance tradeoffs for small propulsion systems, enabling new applications, and redefining the meaning of the term low-cost-access-to-space. With this NASA support, a liquid-cooled, gaseous propellant version of the thrust chamber and nozzle was designed, built, and tested as a first step. DARPA is currently funding MIT to demonstrate turbopumps and controls. The work performed herein was the second year of a proposed three-year effort to develop the technology and demonstrate very high power density, regeneratively cooled, liquid bipropellant rocket engine thrust chamber and nozzles. When combined with the DARPA turbopumps and controls, this work would enable the design and demonstration of a complete rocket propulsion system. The original MIT-NASA concept used liquid oxygen-ethanol propellants. The military applications important to DARPA imply that storable liquid propellants are needed. Thus, MIT examined various storable propellant combinations including N2O4 and hydrazine, and H2O2 and various hydrocarbons. The latter are preferred since they do not have the toxicity of N2O4 and hydrazine. In reflection of the newfound interest in H2O2, it is once again in production and available commercially. A critical issue for the microrocket engine concept is cooling of the walls in a regenerative design. This is even more important at microscale than for large engines due to cube-square scaling considerations. Furthermore, the coolant behavior of rocket propellants has not been characterized at microscale. Therefore, MIT designed and constructed an apparatus expressly for this purpose. The report details measurements of two candidate microrocket fuels, JP-7 and JP-10. Epstein, Alan H. and Joppin, C. and Kerrebrock, J. L. and Schneider, Steven J. (Technical Monitor) Glenn Rese
Download or read book Preliminary Design of a Liquid Bipropellant Microfabricated Rocket Engine written by Omar Mouaffak Al-Midani and published by . This book was released on 1998 with total page 137 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Development and Test of a Microfabricated Bipropellant Rocket Engine written by Adam Pollok London and published by . This book was released on 2000 with total page 255 pages. Available in PDF, EPUB and Kindle. Book excerpt: The development of high aspect-ratio, high precision micromachining in silicon or silicon carbide suggests the feasibility of rnicrofabricated, high chamber pressure chemical rocket engines. Such an engine, approximately 20x15x3 mm in size, would produce about three pounds of thrust using 300 sec I sp propellants. As part of the present work, the feasibility of these engines has been investigated and a liquid-cooled, pressure-fed thrust chamber has been designed, fabricated, and tested to evaluate the feasibility of the concept. The results of the tests to date using oxygen and methane as propellants support the feasibility of the concept, producing a maximum thrust of 1 N at a chamber pressure of 12 atm. Given the 1.2 gram mass of the thrust chamber, this corresponds to a thrust-to-weight ratio of 85:1. The characteristic exhaust velocity, c*, a measure of combustion effectiveness, appears to be nearly independent of chamber pressure, indicating that chemical reaction rates are not limiting the combustion. Additionally, when effects of chamber heat loss are included, c* appears to approach its predicted ideal value, indicating that the transport and mixing of propellants in the combustion chamber is of the right order to provide for complete combustion. The thrust chamber was fabricated by etching the required patterns into each side of six 0.5 mm thick silicon wafers, and then diffusion bonding the six wafers together to create the one-piece thrust chamber. A packaging technique is presented to interface high pressure and high temperature fluids to the silicon rocket engine chip. Additionally, initial modelling work has lead to the development of a methodology for mapping the feasible design space of microrocket engines, and for optimizing the performance of such systems given current limitations in microfabrication technology.
Download or read book Experimental Investigation of Microfabricated Bipropellant Rocket Engines written by Christopher Stephen Protz and published by . This book was released on 2004 with total page 328 pages. Available in PDF, EPUB and Kindle. Book excerpt: (Cont.) Experimental results were compared with CFD predictions which suggest that the low thrust coefficient of these devices is due to the overexpansion of gases in the nozzle at the test pressures in combination with the planar extruded nozzle geometry. CFD suggests that at higher chamber pressures the thrust coefficient will approach values up to 90-95 percent of the 1-D ideal case. Experimental values of characteristic exhaust velocity are in agreement with non- adiabatic predictions indicating that combustion is nearly complete. The chamber pressure and thrust limits in the current devices are due to localized failures at bond interfaces in the coolant passages. The potential of the current design is limited to approximately 60 bar by the coolant passage pressure limit, chamber structural limit, and injector manifold pressure limit. Potential liquid propellants for a regeneratively cooled storable bipropellant microrocket engine are examined. The design space for devices using these propellants is explored based on the thermal, structural, and fabrication constraints, and a design for a regeneratively cooled microrocket engine utilizing liquid nitrogen tetroxide and liquid JP-7 as propellants at a vacuum specific impulse of 267 s is presented. Directions for improved specific impulse engines include increasing the engine size by a factor of 2 to 4 and continuing research on hydrogen peroxide as a coolant.
Download or read book Design of a Silicon Microfabricated Rocket Engine Turbopump written by Antoine Deux and published by . This book was released on 2001 with total page 178 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Liquid Rocket Engine written by Rene Nardi Rezende and published by SAE International. This book was released on 2018-11-15 with total page 158 pages. Available in PDF, EPUB and Kindle. Book excerpt: The great engineering achievement required to overcome most of the challenges and obstacles that prevented turning rocket design from art into science took place in Europe and the United States between the 1930s and the 1950s. With the vast majority of the engines currently in operation developed in the “pre-computer” age, there are new opportunities to update the design methodologies using technology that can now handle highly complex calculations fast. The space sector with an intense focus on efficiency is driving the need for updating, adapting or replacing the old modeling practices with new tools capable of reducing the volume of resources and the time required to complete simulations and analysis. This book presents an innovative parametric model applicable to the project of some elements of the liquid rocket thrust chamber with the level of detail and accuracy appropriate to the preliminary design phase. It addresses the operating characteristics and dimensioning of some thrust chamber elements through a set of equations and parameters, which include thrust or propellant characteristics. The model degree of sophistication was adjusted to the requirements of the Project Life Cycle Phase B, while also enabling quick analysis of new configurations from changes in initial project parameters.
Download or read book Ignition written by John Drury Clark and published by Rutgers University Press. This book was released on 2018-05-23 with total page 302 pages. Available in PDF, EPUB and Kindle. Book excerpt: This newly reissued debut book in the Rutgers University Press Classics imprint is the story of the search for a rocket propellant which could be trusted to take man into space. This search was a hazardous enterprise carried out by rival labs who worked against the known laws of nature, with no guarantee of success or safety. Acclaimed scientist and sci-fi author John Drury Clark writes with irreverent and eyewitness immediacy about the development of the explosive fuels strong enough to negate the relentless restraints of gravity. The resulting volume is as much a memoir as a work of history, sharing a behind-the-scenes view of an enterprise which eventually took men to the moon, missiles to the planets, and satellites to outer space. A classic work in the history of science, and described as “a good book on rocket stuff...that’s a really fun one” by SpaceX founder Elon Musk, readers will want to get their hands on this influential classic, available for the first time in decades.
Download or read book Development and Test of a Microfabricated Birpropellant Rocket Engine written by Adam Pollok London and published by . This book was released on 2000 with total page 255 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fundamental Concepts of Liquid Propellant Rocket Engines written by Alessandro de Iaco Veris and published by Springer Nature. This book was released on 2020-09-26 with total page 747 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is intended for students and engineers who design and develop liquid-propellant rocket engines, offering them a guide to the theory and practice alike. It first presents the fundamental concepts (the generation of thrust, the gas flow through the combustion chamber and the nozzle, the liquid propellants used, and the combustion process) and then qualitatively and quantitatively describes the principal components involved (the combustion chamber, nozzle, feed systems, control systems, valves, propellant tanks, and interconnecting elements). The book includes extensive data on existing engines, typical values for design parameters, and worked-out examples of how the concepts discussed can be applied, helping readers integrate them in their own work. Detailed bibliographical references (including books, articles, and items from the “gray literature”) are provided at the end of each chapter, together with information on valuable resources that can be found online. Given its scope, the book will be of particular interest to undergraduate and graduate students of aerospace engineering.
Download or read book Systems Analysis of a Microfabricated Storable Bipropellant Rocket Engine written by Christopher Stephen Protz and published by . This book was released on 2000 with total page 194 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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:
Download or read book Liquid Rockets and Propellants written by Loren E. Bollinger and published by . This book was released on 1960 with total page 710 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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 History of Liquid Propellant Rocket Engines written by George Paul Sutton (Ingenieur) and published by . This book was released on 2006 with total page 909 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Design of Liquid fueled Rocket Engines written by James R. and published by . This book was released on 2017-08-28 with total page 202 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book intends to build a bridge for the student and the young engineer: to link the rocket propulsion fundamentals and elements (which are well covered in the literature) with the actual rocket engine design and development work as it is carried out in industry (which is very little, if at all covered in literature). The book attempts to further the understanding of the realistic application of liquid rocket propulsion theories, and to help avoid or at least reduce time and money consuming errors and disappointments. In so doing, it also attempts to digest and consolidate numerous closely related subjects, hitherto often treated as separate, bringing them up to date at the same time.
Download or read book Design of Liquid fueled Rocket Engines written by James R. and published by . This book was released on 2017-08-28 with total page 234 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book intends to build a bridge for the student and the young engineer: to link the rocket propulsion fundamentals and elements (which are well covered in the literature) with the actual rocket engine design and development work as it is carried out in industry (which is very little, if at all covered in literature). The book attempts to further the understanding of the realistic application of liquid rocket propulsion theories, and to help avoid or at least reduce time and money consuming errors and disappointments. In so doing, it also attempts to digest and consolidate numerous closely related subjects, hitherto often treated as separate, bringing them up to date at the same time.
Download or read book Design of Liquid fueled Rocket Engines written by James R. and published by . This book was released on 2017-08-28 with total page 224 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book intends to build a bridge for the student and the young engineer: to link the rocket propulsion fundamentals and elements (which are well covered in the literature) with the actual rocket engine design and development work as it is carried out in industry (which is very little, if at all covered in literature). The book attempts to further the understanding of the realistic application of liquid rocket propulsion theories, and to help avoid or at least reduce time and money consuming errors and disappointments. In so doing, it also attempts to digest and consolidate numerous closely related subjects, hitherto often treated as separate, bringing them up to date at the same time.
