Read Books Online and Download eBooks, EPub, PDF, Mobi, Kindle, Text Full Free.
Development And Test Of A Microfabricated Birpropellant Rocket Engine
Download Development And Test Of A Microfabricated Birpropellant Rocket Engine full books in PDF, epub, and Kindle. Read online Development And Test Of A Microfabricated Birpropellant Rocket Engine ebook anywhere anytime directly on your device. Fast Download speed and no annoying ads. We cannot guarantee that every ebooks is available!
Book Synopsis Development and Test of a Microfabricated Bipropellant Rocket Engine by : Adam Pollok London
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.
Book Synopsis Development and Test of a Microfabricated Birpropellant Rocket Engine by : Adam Pollok London
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:
Book Synopsis Preliminary Design of a Liquid Bipropellant Microfabricated Rocket Engine by : Omar Mouaffak Al-Midani
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:
Author :National Aeronautics and Space Administration (NASA) Publisher :Createspace Independent Publishing Platform ISBN 13 :9781721940639 Total Pages :202 pages Book Rating :4.9/5 (46 download)
Book Synopsis Microfabricated Liquid Rocket Motors by : National Aeronautics and Space Administration (NASA)
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
Book Synopsis Development of a Combustion Test Rig for a Bipropellant Micro Propulsion System by : Abdelfattah Ali Mohamed Mohamed Mostafa
Download or read book Development of a Combustion Test Rig for a Bipropellant Micro Propulsion System written by Abdelfattah Ali Mohamed Mohamed Mostafa and published by . This book was released on 2016 with total page 54 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the past decade, interest has increased in using green propellants as a substitute to toxic ones such as nitrogen tetroxide and monomethyl hydrazine. Kerosene and Hydrogen peroxide are being investigated as a suitable substitute due to their low toxicity and the low price as well as suitable performance. FOTEC is developing a bipropellant micro thruster that is based on kerosene and hydrogen peroxide. The thruster is designed for satellites attitude control. It also relies on the auto-ignition of the kerosene when it is mixed with the decomposed hydrogen peroxide. The scope of this work was to design a combustor test rig for a bipropellant combustion chamber of a micro rocket engine. The objective of the rig is to investigate the heat transfer in the chamber. The requirements included providing a modular design that enables understanding the effect of different design parameters on the heat flux through the combustors walls. The design concept is based on building the chamber of several segments that allow the change of the length of the chamber, the injector and the nozzle. The chamber is designed to interface with the existing chemical propulsion test bench at FOTEC. In order to estimate the heat flux values, temperature measurement tabs were included at different points in the combustion chamber. Different heat flux calculation methods were discussed of which two method were qualified as suitable for the application. The design was based in part on the requirements imposed by these two methods along with the performance requirements. *****In the past decade, interest has increased in using green propellants as a substitute to toxic ones such as nitrogen tetroxide and monomethyl hydrazine. Kerosene and Hydrogen peroxide are being investigated as a suitable substitute due to their low toxicity and the low price as well as suitable performance. FOTEC is developing a bipropellant micro thruster that is based on kerosene and hydrogen peroxide. The thruster is designed for satellites attitude control. It also relies on the auto-ignition of the kerosene when it is mixed with the decomposed hydrogen peroxide. The scope of this work was to design a combustor test rig for a bipropellant combustion chamber of a micro rocket engine. The objective of the rig is to investigate the heat transfer in the chamber. The requirements included providing a modular design that enables understanding the effect of different design parameters on the heat flux through the combustors walls. The design concept is based on building the chamber of several segments that allow the change of the length of the chamber, the injector and the nozzle. The chamber is designed to interface with the existing chemical propulsion test bench at FOTEC. In order to estimate the heat flux values, temperature measurement tabs were included at different points in the combustion chamber. Different heat flux calculation methods were discussed of which two method were qualified as suitable for the application. The design was based in part on the requirements imposed by these two methods along with the performance requirements.
Book Synopsis Experimental Investigation of Microfabricated Bipropellant Rocket Engines by : Christopher Stephen Protz
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.
Book Synopsis Systems Analysis of a Microfabricated Storable Bipropellant Rocket Engine by : Christopher Stephen Protz
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:
Book Synopsis Design, Development, and Testing of a 1000 Pound (4450 N) Thrust FLOX-propane Ablative Rocket Engine by : Donald A. Peterson
Download or read book Design, Development, and Testing of a 1000 Pound (4450 N) Thrust FLOX-propane Ablative Rocket Engine written by Donald A. Peterson and published by . This book was released on 1969 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Low-Thrust Bipropellant Engine Technology by : L. Schoenman
Download or read book Low-Thrust Bipropellant Engine Technology written by L. Schoenman and published by . This book was released on 1980 with total page 428 pages. Available in PDF, EPUB and Kindle. Book excerpt: The design, fabrication and hotfire test of a low-thrust, 0.5 lbF class bipropellant rocket engine, capable of providing very small, precisely repeatible impulse bits and long, high-performance, steady-state burns, was undertaken in a three-phase program. Phase I, Analysis and Design, consisted of detailed studies and tradeoff analyses of general mission/system requirements versus engine assembly parametrics and the development of the overall design approach. Phase II, Design Verification, consisted of component (valve, injector and chamber) fabrication and development testing for the demonstration point design. Phase III, Demonstration, consisted of engine fabrication and demonstration of the point design. While a 100% achievement of all contract goals was elusive within the resources provided, significant advancements in small engine technology were made that prove the feasibility of developing a 0.5 lbF class bipropellant engine. Steady-state durability of 8 hours of firing without failure has been demonstrated, along with a small impulse bit of less than 0.005 + or - 0005 lbF sec. It is reasonable to predict that the same engine that ran 8 hours steady-state will be able to accomplish the 10 hour life goal based on its excellent postfire condition.
Book Synopsis A High Pressure Bipropellant Micro-rocket Engine by : A. P. London
Download or read book A High Pressure Bipropellant Micro-rocket Engine written by A. P. London and published by . This book was released on 2000 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Fundamentals of Microfabrication and Nanotechnology, Three-Volume Set by : Marc J. Madou
Download or read book Fundamentals of Microfabrication and Nanotechnology, Three-Volume Set written by Marc J. Madou and published by CRC Press. This book was released on 2018-12-14 with total page 3654 pages. Available in PDF, EPUB and Kindle. Book excerpt: Now in its third edition, Fundamentals of Microfabrication and Nanotechnology continues to provide the most complete MEMS coverage available. Thoroughly revised and updated the new edition of this perennial bestseller has been expanded to three volumes, reflecting the substantial growth of this field. It includes a wealth of theoretical and practical information on nanotechnology and NEMS and offers background and comprehensive information on materials, processes, and manufacturing options. The first volume offers a rigorous theoretical treatment of micro- and nanosciences, and includes sections on solid-state physics, quantum mechanics, crystallography, and fluidics. The second volume presents a very large set of manufacturing techniques for micro- and nanofabrication and covers different forms of lithography, material removal processes, and additive technologies. The third volume focuses on manufacturing techniques and applications of Bio-MEMS and Bio-NEMS. Illustrated in color throughout, this seminal work is a cogent instructional text, providing classroom and self-learners with worked-out examples and end-of-chapter problems. The author characterizes and defines major research areas and illustrates them with examples pulled from the most recent literature and from his own work.
Book Synopsis 36th AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit: 2000-3150 - 2000-3199 by :
Download or read book 36th AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit: 2000-3150 - 2000-3199 written by and published by . This book was released on 2000 with total page 642 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Fundamentals and Applications of Microfluidics, Third Edition by : Nam-Trung Nguyen
Download or read book Fundamentals and Applications of Microfluidics, Third Edition written by Nam-Trung Nguyen and published by Artech House. This book was released on 2019-01-31 with total page 576 pages. Available in PDF, EPUB and Kindle. Book excerpt: Now in its Third Edition, the Artech House bestseller, Fundamentals and Applications of Microfluidics, provides engineers and students with the most complete and current coverage of this cutting-edge field. This revised and expanded edition provides updated discussions throughout and features critical new material on microfluidic power sources, sensors, cell separation, organ-on-chip and drug delivery systems, 3D culture devices, droplet-based chemical synthesis, paper-based microfluidics for point-of-care, ion concentration polarization, micro-optofluidics and micro-magnetofluidics. The book shows how to take advantage of the performance benefits of microfluidics and serves as an instant reference for state-of-the-art microfluidics technology and applications. Readers find discussions on a wide range of applications, including fluid control devices, gas and fluid measurement devices, medical testing equipment, and implantable drug pumps. Professionals get practical guidance in choosing the best fabrication and enabling technology for a specific microfluidic application, and learn how to design a microfluidic device. Moreover, engineers get simple calculations, ready-to-use data tables, and rules of thumb that help them make design decisions and determine device characteristics quickly.
Book Synopsis Experimental Verification of a Double Dead-time Model Describing Chugging in Liquid Bipropellant Rocket Engines by : John R. Szuch
Download or read book Experimental Verification of a Double Dead-time Model Describing Chugging in Liquid Bipropellant Rocket Engines written by John R. Szuch and published by . This book was released on 1968 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Microsystem Design by : Stephen D. Senturia
Download or read book Microsystem Design written by Stephen D. Senturia and published by Springer Science & Business Media. This book was released on 2005-12-20 with total page 699 pages. Available in PDF, EPUB and Kindle. Book excerpt: It is a real pleasure to write the Foreword for this book, both because I have known and respected its author for many years and because I expect this book’s publication will mark an important milestone in the continuing worldwide development of microsystems. By bringing together all aspects of microsystem design, it can be expected to facilitate the training of not only a new generation of engineers, but perhaps a whole new type of engineer – one capable of addressing the complex range of problems involved in reducing entire systems to the micro- and nano-domains. This book breaks down disciplinary barriers to set the stage for systems we do not even dream of today. Microsystems have a long history, dating back to the earliest days of mic- electronics. While integrated circuits developed in the early 1960s, a number of laboratories worked to use the same technology base to form integrated sensors. The idea was to reduce cost and perhaps put the sensors and circuits together on the same chip. By the late-60s, integrated MOS-photodiode arrays had been developed for visible imaging, and silicon etching was being used to create thin diaphragms that could convert pressure into an electrical signal. By 1970, selective anisotropic etching was being used for diaphragm formation, retaining a thick silicon rim to absorb package-induced stresses. Impurity- and electrochemically-based etch-stops soon emerged, and "bulk micromachining" came into its own.
Book Synopsis Development and Qualification of a 2nd Generation 5 Lbf (22 N) Bipropellant Rocket Engine by : R. Carl Stechman
Download or read book Development and Qualification of a 2nd Generation 5 Lbf (22 N) Bipropellant Rocket Engine written by R. Carl Stechman and published by . This book was released on 1989 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis BioMEMS and Biomedical Nanotechnology by : Rashid Bashir
Download or read book BioMEMS and Biomedical Nanotechnology written by Rashid Bashir and published by Springer Science & Business Media. This book was released on 2007-04-03 with total page 420 pages. Available in PDF, EPUB and Kindle. Book excerpt: Annotation Volume 4 is a balanced review of key aspects of BioMEMS sensors, including (i) BioMEMS sensors and materials, (ii) means of manipulating biological entities at the microscale, and (iii) micro-fluidics and characterization. These three sections provide a succinct review of important topics within one volume of this series.
