Minimization Of Thruster Plume Effects On Spacecraft Surfaces

Download Minimization Of Thruster Plume Effects On Spacecraft Surfaces full books in PDF, epub, and Kindle. Read online Minimization Of Thruster Plume Effects On Spacecraft Surfaces ebook anywhere anytime directly on your device. Fast Download speed and no annoying ads. We cannot guarantee that every ebooks is available!

Minimization of Thruster Plume Effects on Spacecraft Surfaces

Download Minimization of Thruster Plume Effects on Spacecraft Surfaces PDF Online Free

Author :
Publisher :
ISBN 13 :
Total Pages : 37 pages
Book Rating : 4.:/5 (227 download)

Book Synopsis Minimization of Thruster Plume Effects on Spacecraft Surfaces by :

Download or read book Minimization of Thruster Plume Effects on Spacecraft Surfaces written by and published by . This book was released on 2007 with total page 37 pages. Available in PDF, EPUB and Kindle. Book excerpt: For the past several years, Advatech Pacific has been maintaining and enhancing the COLISEUM plume simulation environment under the direction of AFRL/PRSS. COLISEUM is a software environment used to model the propagation of a plasma plume and its interactions with solid surfaces (including both sputtering and re-deposition). A recent addition to the capabilities of COLISEUM is its integration with ModelCenter, the optimization and integration framework developed by Phoenix Integration. With the help of ModelCenter, the thrust directions of four Hall Effect Thrusters (HETs) for a representative satellite geometry are optimized such that the overall sputtering on the solar panels is minimized, subject to performance constraints on the overall thrust and torque. The satellite is assumed to be in a geosynchronous orbit, with the solar panels always facing the sun. Different positions in the satellite's orbit are considered, as is a case where one thruster is disabled. All cases considered showed smooth convergence behavior, and sputtering on the solar panels could be reduced significantly while meeting all performance constraints.

Hall Thruster Plume Effects and Sputtering of Spacecraft Surfaces

Download Hall Thruster Plume Effects and Sputtering of Spacecraft Surfaces PDF Online Free

Author : S. H. Hu
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (11 download)

Book Synopsis Hall Thruster Plume Effects and Sputtering of Spacecraft Surfaces by : S. H. Hu

Download or read book Hall Thruster Plume Effects and Sputtering of Spacecraft Surfaces written by S. H. Hu and published by . This book was released on 2001 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Exhaust Plume Effects of Small Thrusters on Spacecraft Surfaces

Download Exhaust Plume Effects of Small Thrusters on Spacecraft Surfaces PDF Online Free

Author : H. Trinks
Publisher :
ISBN 13 :
Total Pages : 11 pages
Book Rating : 4.:/5 (11 download)

Book Synopsis Exhaust Plume Effects of Small Thrusters on Spacecraft Surfaces by : H. Trinks

Download or read book Exhaust Plume Effects of Small Thrusters on Spacecraft Surfaces written by H. Trinks and published by . This book was released on 1987 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Fundamentals of Electric Propulsion

Download Fundamentals of Electric Propulsion PDF Online Free

Author : Dan M. Goebel
Publisher : John Wiley & Sons
ISBN 13 : 0470436263
Total Pages : 528 pages
Book Rating : 4.4/5 (74 download)

Book Synopsis Fundamentals of Electric Propulsion by : Dan M. Goebel

Download or read book Fundamentals of Electric Propulsion written by Dan M. Goebel and published by John Wiley & Sons. This book was released on 2008-12-22 with total page 528 pages. Available in PDF, EPUB and Kindle. Book excerpt: Throughout most of the twentieth century, electric propulsion was considered the technology of the future. Now, the future has arrived. This important new book explains the fundamentals of electric propulsion for spacecraft and describes in detail the physics and characteristics of the two major electric thrusters in use today, ion and Hall thrusters. The authors provide an introduction to plasma physics in order to allow readers to understand the models and derivations used in determining electric thruster performance. They then go on to present detailed explanations of: Thruster principles Ion thruster plasma generators and accelerator grids Hollow cathodes Hall thrusters Ion and Hall thruster plumes Flight ion and Hall thrusters Based largely on research and development performed at the Jet Propulsion Laboratory (JPL) and complemented with scores of tables, figures, homework problems, and references, Fundamentals of Electric Propulsion: Ion and Hall Thrusters is an indispensable textbook for advanced undergraduate and graduate students who are preparing to enter the aerospace industry. It also serves as an equally valuable resource for professional engineers already at work in the field.

Contamination Control and Plume Assessment of Low-Energy Thrusters

Download Contamination Control and Plume Assessment of Low-Energy Thrusters PDF Online Free

Author : National Aeronautics and Space Adm Nasa
Publisher : Independently Published
ISBN 13 : 9781792055836
Total Pages : 26 pages
Book Rating : 4.0/5 (558 download)

Book Synopsis Contamination Control and Plume Assessment of Low-Energy Thrusters by : National Aeronautics and Space Adm Nasa

Download or read book Contamination Control and Plume Assessment of Low-Energy Thrusters written by National Aeronautics and Space Adm Nasa and published by Independently Published. This book was released on 2018-12-29 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt: Potential contamination of a spacecraft cryogenic surface by a xenon (Xe) ion generator was evaluated. The analysis involves the description of the plume exhausted from the generator with its relative component fluxes on the spacecraft surfaces, and verification of the conditions for condensation, adsorption, and sputtering at those locations. The data describing the plume fluxes and their effects on surfaces were obtained from two sources: the tests carried out with the Xe generator in a small vacuum chamber to indicate deposits and sputter on monitor slides; and the extensive tests with a mercury (Hg) ion thruster in a large vacuum chamber. The Hg thruster tests provided data on the neutrals, on low-energy ion fluxes, on high-energy ion fluxes, and on sputtered materials at several locations within the plume. Scialdone, John J. Goddard Space Flight Center NASA-TM-104585, 93E01024, NAS 1.15:104585 ...

Aerospace Vehicles Charging by Thruster Plumes

Download Aerospace Vehicles Charging by Thruster Plumes PDF Online Free

Author : H. Trinks
Publisher :
ISBN 13 :
Total Pages : 6 pages
Book Rating : 4.:/5 (228 download)

Book Synopsis Aerospace Vehicles Charging by Thruster Plumes by : H. Trinks

Download or read book Aerospace Vehicles Charging by Thruster Plumes written by H. Trinks and published by . This book was released on 1983 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt: Aerospace and spacecraft charging is a cause of a number of operational problems. Some satellites are equipped with numerous small thruster engines to stabilize and to correct their position. Particularly thruster plumes produced by small bipropellant engines consist of electrically charged clouds of droplets, moisture and ions. A lo N engine on the GALILEO spacecraft was installed in a large high vacuum measuring plant equipped with electric field measurement devices suitable for the investigation of plume charging effects. A stream of charged particles leaving the thruster and interacting with spacecraft surfaces could be observed. The results are discussed. (Author).

Experimental and Numerical Study of Spacecraft Contamination Problems Associated With Gas and Gas-Droplet Thruster Plume Flows

Download Experimental and Numerical Study of Spacecraft Contamination Problems Associated With Gas and Gas-Droplet Thruster Plume Flows PDF Online Free

Author :
Publisher :
ISBN 13 :
Total Pages : 219 pages
Book Rating : 4.:/5 (227 download)

Book Synopsis Experimental and Numerical Study of Spacecraft Contamination Problems Associated With Gas and Gas-Droplet Thruster Plume Flows by :

Download or read book Experimental and Numerical Study of Spacecraft Contamination Problems Associated With Gas and Gas-Droplet Thruster Plume Flows written by and published by . This book was released on 2006 with total page 219 pages. Available in PDF, EPUB and Kindle. Book excerpt: The project consists of two large parts. The first part is the study of plume flows escaping into vacuum, and the second part deals with gasdroplet flows. These two parts are united by a common area of research, namely, contamination problems of space station surfaces due to thruster firing. The objective of the first part is accurate prediction of force and heat loads and contamination due to interaction of thruster plumes with the spacecraft surface. This requires a detailed knowledge of the plume structure. For this purpose, a software system SMILE (Statistical Modeling In Low-density Environment) is developed for modeling plume flows. This system is based on the Direct Simulation Monte Carlo (DSMC) method and incorporates economical numerical schemes of the DSMC method majorant frequency scheme, advanced models that describe energy transfer in the case of collisions of diatomic and polyatomic molecules, possibilities of parallelization, and models for chemically reacting flows of polyatomic gases. An important aspect associated with this activity is the use of advanced object-oriented approaches for the development of the SMILE system. The objective of the second part is an experimental and numerical study of a two-phase gas-droplet flow arising in the case of simultaneous exhaustion of liquid and gas into vacuum. This problem is closely related to the processes of backflow contamination of spacecraft surfaces by thruster plumes with a fuel film used for cooling the inner surface of the nozzle. The main attention is paid to studying the behavior of droplets into which the liquid is decomposed at the initial stage of droplet motion and to the interaction of droplets with a freely expanding gas plume.

Protection of Materials and Structures from the Space Environment

Download Protection of Materials and Structures from the Space Environment PDF Online Free

Author : Jacob I. Kleiman
Publisher : Springer Science & Business Media
ISBN 13 : 1402043198
Total Pages : 456 pages
Book Rating : 4.4/5 (2 download)

Book Synopsis Protection of Materials and Structures from the Space Environment by : Jacob I. Kleiman

Download or read book Protection of Materials and Structures from the Space Environment written by Jacob I. Kleiman and published by Springer Science & Business Media. This book was released on 2006-07-13 with total page 456 pages. Available in PDF, EPUB and Kindle. Book excerpt: The effects of various space environment factors like atomic oxygen, vacuum ultraviolet radiation, charging, micrometeoroids, meteoroid showers, etc. on materials and structures in various orbits are discussed. In addition the ways to prevent these effects or reduce them through protection by coatings or modification of affected surfaces are considered in the book. The discussions on development of predictive models of material erosion that will allow the materials engineers and designers of future spacecraft to evaluate materials' behaviour is continued from the past meetings.

Protection of Materials and Structures from Space Environment

Download Protection of Materials and Structures from Space Environment PDF Online Free

Author : J. Kleiman
Publisher : Springer Science & Business Media
ISBN 13 : 1402025955
Total Pages : 553 pages
Book Rating : 4.4/5 (2 download)

Book Synopsis Protection of Materials and Structures from Space Environment by : J. Kleiman

Download or read book Protection of Materials and Structures from Space Environment written by J. Kleiman and published by Springer Science & Business Media. This book was released on 2006-03-09 with total page 553 pages. Available in PDF, EPUB and Kindle. Book excerpt: This publication presents the proceedings of ICPMSE-6, the sixth international conference on Protection of Materials and Structures from Space Environment, held in Toronto May 1-3, 2002. The ICPMSE series of meetings became an important part of the LEO space community since it was started in 1991. Since then, the meeting has grown steadily, attracting a large number of engineers, researchers, managers, and scientists from industrial companies, scientific institutions and government agencies in Canada, U. S. A. , Asia, and Europe, thus becoming a true international event. This year’s meeting is gaining even stronger importance with the resumption of the ISS and other space projects in LEO, GEO and Deep Space. To reflect on these activities, the topics in the program have been extended to include protection of materials in GEO and Deep Space. The combination of a broad selection of technical and scientific topics addressed by internationally known speakers with the charm of Toronto and the hospitality of the organizers brings participants back year after year. The conference was hosted and organized by Integrity Testing Laboratory Inc. (ITL), and held at the University of Toronto’s Institute for Aerospace Studies (UTIAS). The meeting was sponsored by the Materials and Manufacturing Ontario (MMO) and the CRESTech, two Ontario Centres of Excellence; Air Force Office of Scientific Research (AFOSR/NL); MD Robotics; EMS Technologies; The Integrity Testing Laboratory (ITL); and the UTIAS.

Deposition of Ion Thruster Effluents on SERT II Spacecraft Surfaces

Download Deposition of Ion Thruster Effluents on SERT II Spacecraft Surfaces PDF Online Free

Author : John V. Staskus
Publisher :
ISBN 13 :
Total Pages : 28 pages
Book Rating : 4.F/5 ( download)

Book Synopsis Deposition of Ion Thruster Effluents on SERT II Spacecraft Surfaces by : John V. Staskus

Download or read book Deposition of Ion Thruster Effluents on SERT II Spacecraft Surfaces written by John V. Staskus and published by . This book was released on 1970 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Scientific and Technical Aerospace Reports

Download Scientific and Technical Aerospace Reports PDF Online Free

Author :
Publisher :
ISBN 13 :
Total Pages : 704 pages
Book Rating : 4.:/5 (31 download)

Book Synopsis Scientific and Technical Aerospace Reports by :

Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1995 with total page 704 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Rocket Propulsion Elements

Download Rocket Propulsion Elements PDF Online Free

Author : George P. Sutton
Publisher : John Wiley & Sons
ISBN 13 : 1118753917
Total Pages : 804 pages
Book Rating : 4.1/5 (187 download)

Book Synopsis Rocket Propulsion Elements by : George P. Sutton

Download or read book Rocket Propulsion Elements written by George P. Sutton and published by John Wiley & Sons. This book was released on 2016-11-30 with total page 804 pages. Available in PDF, EPUB and Kindle. Book excerpt: ROCKET PROPULSION ELEMENTS THE DEFINITIVE INTRODUCTION TO ROCKET PROPULSION THEORY AND APPLICATIONS The recent upsurge in global government and private spending and in space flight events has resulted in many novel applications of rocket propulsion technology. Rocket Propulsion Elements remains the definitive guide to the field, providing a comprehensive introduction to essential concepts and applications. Led by industry veteran George P. Sutton and by Professor Oscar Biblarz, this book provides interdisciplinary coverage including thermodynamics, aerodynamics, flight performance, propellant chemistry and more. This thoroughly revised ninth edition includes discussion and analysis of recent advances in the field, representing an authoritative reference for students and working engineers alike. In any engineering field, theory is only as useful as it is practical; this book emphasizes relevant real-world applications of fundamental concepts to link “thinking” and “doing”. This book will help readers: Understand the physics of flight and the chemistry of propulsion Analyze liquid, solid, gas, and hybrid propellants, and the engines they fuel Consider high-temperature combustion, stability, and the principles of electric and chemical propulsion Dissect the workings of systems in common use around the world today Delve into the latest advances in materials, systems, propellants, and more Broad in scope, rich in detail, and clear in explanation, this seminal work provides an unparalleled foundation in aerospace engineering topics. Learning through the lens of modern applications untangles complex topics and helps students fully grasp the intricacies on a more intuitive level. Rocket Propulsion Elements, Ninth Edition merges information and utility building a solid foundation for innovation.

Hall Effect Thruster Plume Contamination and Erosion Study

Download Hall Effect Thruster Plume Contamination and Erosion Study PDF Online Free

Author : National Aeronautics and Space Administration (NASA)
Publisher : Createspace Independent Publishing Platform
ISBN 13 : 9781721210374
Total Pages : 40 pages
Book Rating : 4.2/5 (13 download)

Book Synopsis Hall Effect Thruster Plume Contamination and Erosion Study by : National Aeronautics and Space Administration (NASA)

Download or read book Hall Effect Thruster Plume Contamination and Erosion Study written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-06-15 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt: The objective of the Hall effect thruster plume contamination and erosion study was to evaluate the impact of a xenon ion plume on various samples placed in the vicinity of a Hall effect thruster for a continuous 100 hour exposure. NASA Glenn Research Center was responsible for the pre- and post-test evaluation of three sample types placed around the thruster: solar cell cover glass, RTV silicone, and Kapton(R). Mass and profilometer), were used to identify the degree of deposition and/or erosion on the solar cell cover glass, RTV silicone, and Kapton@ samples. Transmittance, reflectance, solar absorptance, and room temperature emittance were used to identify the degree of performance degradation of the solar cell cover glass samples alone. Auger spectroscopy was used to identify the chemical constituents found on the surface of the exposed solar cell cover glass samples. Chemical analysis indicated some boron nitride contamination on the samples, from boron nitride insulators used in the body of the thruster. However, erosion outweighted contamination. All samples exhibited some degree of erosion. with the most erosion occurring near the centerline of the plume and the least occurring at the +/- 90 deg positions. For the solar cell cover glass samples, erosion progressed through the antireflective coating and into the microsheet glass itself. Erosion occurred in the solar cell cover glass, RTV silicone and Kapton(R) at different rates. All optical properties changed with the degree of erosion, with solar absorptance and room temperature emittance increasing with erosion. The transmittance of some samples decreased while the reflectance of some samples increased and others decreased. All results are consistent with an energetic plume of xenon ions serving as a source for erosion. Jaworske, Donald A. Glenn Research Center NASA/TM-2000-210204, E-12324, NAS 1.15:210204

Protection of Materials and Structures From the Space Environment

Download Protection of Materials and Structures From the Space Environment PDF Online Free

Author : Jacob Kleiman
Publisher : Springer Science & Business Media
ISBN 13 : 3642302289
Total Pages : 606 pages
Book Rating : 4.6/5 (423 download)

Book Synopsis Protection of Materials and Structures From the Space Environment by : Jacob Kleiman

Download or read book Protection of Materials and Structures From the Space Environment written by Jacob Kleiman and published by Springer Science & Business Media. This book was released on 2012-09-22 with total page 606 pages. Available in PDF, EPUB and Kindle. Book excerpt: The goals of the 10th International Space Conference on “Protection of Materials and Structures from Space Environment” ICPMSE-10J, since its inception in 1992, have been to facilitate exchanges between members of the various engineering and science disciplines involved in the development of space materials, including aspects of LEO, GEO and Deep Space environments, ground-based qualification, and in-flight experiments and lessons learned from operational vehicles that are closely interrelated to disciplines of the atmospheric sciences, solar-terrestrial interactions and space life sciences. The knowledge of environmental conditions on and around the Moon, Mars, Venus and the low Earth orbit as well as other possible candidates for landing such as asteroids have become an important issue, and protecting both hardware and human life from the effects of space environments has taken on a new meaning in light of the increased interest in space travel and colonization of other planets. And while many material experiments have been carried out on the ground and in open space in the last 50 years (LDEF, MEEP, SARE, MISSE, AOP, DSPSE, ESEM, EURECA, HST, MDIM, MIS, MPID, MPAC and SEED), many questions regarding the environmental impact of space on materials remain either poorly understood or unanswered. The coming generations of scientists will have to continue this work and tackle new challenges, continuing to build the level of confidence humans will need to continue the colonization of space. It is hoped that the proceedings of the ICPMSE-10J presented in this book will constitute a small contribution to doing so.

Applied Mechanics Reviews

Download Applied Mechanics Reviews PDF Online Free

Author :
Publisher :
ISBN 13 :
Total Pages : 776 pages
Book Rating : 4.:/5 (26 download)

Book Synopsis Applied Mechanics Reviews by :

Download or read book Applied Mechanics Reviews written by and published by . This book was released on 1971 with total page 776 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Optics in Adverse Environments

Download Optics in Adverse Environments PDF Online Free

Author : Mark A. Kahan
Publisher :
ISBN 13 :
Total Pages : 294 pages
Book Rating : 4.3/5 (91 download)

Book Synopsis Optics in Adverse Environments by : Mark A. Kahan

Download or read book Optics in Adverse Environments written by Mark A. Kahan and published by . This book was released on 1980 with total page 294 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Space Environmental Effects on Spacecraft

Download Space Environmental Effects on Spacecraft PDF Online Free

Author : Edward Mark Silverman
Publisher :
ISBN 13 :
Total Pages : 504 pages
Book Rating : 4.3/5 (126 download)

Book Synopsis Space Environmental Effects on Spacecraft by : Edward Mark Silverman

Download or read book Space Environmental Effects on Spacecraft written by Edward Mark Silverman and published by . This book was released on 1995 with total page 504 pages. Available in PDF, EPUB and Kindle. Book excerpt: