Thermal control surfaces, solar arrays, and optical devices may be adversely affected by a small quantity of molecular and/or particulate contamination. What is rarely discussed is how one: (1) quantifies the level of contamination that must be maintained in order for the system to function properly, and (2) enforces contamination control to ensure compliance with requirements. This document is designed to address these specific issues and is intended to serve as a handbook on contamination control for the reader, illustrating process and methodology while providing direction to more detailed references when needed. The effects of molecular contamination on reflecting and transmitting surfaces are examined and quantified in accordance with MIL STD 1246C. The generation, transportation, and deposition of molecular contamination is reviewed and specific examples are worked to illustrate the process a design engineer can use to estimate end of life cleanliness levels required by solar arrays, thermal control surfaces, and optical surfaces. A similar process is used to describe the effect of particulate contamination as related to percent area coverage (PAC) and bi-directional reflectance distribution function (BRDF). Relationships between PAC and surface cleanliness, which include the effects of submicron sized particles, are developed and BRDF is related to specific sensor design parameters such as Point Source Transmittance (PST). The pros and cons of various methods of preventing, monitoring, and cleaning surfaces are examined and discussed. Tribble, A. C. (Principal Investigator) and Boyadjian, B. and Davis, J. and Haffner, J. and McCullough, E. Goddard Space Flight Center CLEANLINESS; CONTAMINATION; QUALITY CONTROL; HANDBOOKS; AEROSPACE INDUSTRY; PRODUCTION MANAGEMENT; RELIABILITY ENGINEERING; DESIGN ANALYSIS; REFLECTION; SOLAR ARRAYS; CLEANING...

This Tutorial Text provides a comprehensive introduction to the subject of contamination control, with specific applications to the aerospace industry. The author draws upon his many years as a practicing contamination control engineer, researcher, and teacher. The book examines methods to quantify the cleanliness level required by various contamination-sensitive surfaces and to predict the end-of-life contamination level for those surfaces, and it identifies contamination control techniques required to ensure mission success.

This book addresses a broad range of topics on antennas for space applications. First, it introduces the fundamental methodologies of space antenna design, modelling and analysis as well as the state-of-the-art and anticipated future technological developments. Each of the topics discussed are specialized and contextualized to the space sector. Furthermore, case studies are also provided to demonstrate the design and implementation of antennas in actual applications. Second, the authors present a detailed review of antenna designs for some popular applications such as satellite communications, space-borne synthetic aperture radar (SAR), Global Navigation Satellite Systems (GNSS) receivers, science instruments, radio astronomy, small satellites, and deep-space applications. Finally it presents the reader with a comprehensive path from space antenna development basics to specific individual applications. Key Features: Presents a detailed review of antenna designs for applications such as satellite communications, space-borne SAR, GNSS receivers, science instruments, small satellites, radio astronomy, deep-space applications Addresses the space antenna development from different angles, including electromagnetic, thermal and mechanical design strategies required for space qualification Includes numerous case studies to demonstrate how to design and implement antennas in practical scenarios Offers both an introduction for students in the field and an in-depth reference for antenna engineers who develop space antennas This book serves as an excellent reference for researchers, professionals and graduate students in the fields of antennas and propagation, electromagnetics, RF/microwave/millimetrewave systems, satellite communications, radars, satellite remote sensing, satellite navigation and spacecraft system engineering, It also aids engineers technical managers and professionals working on antenna and RF designs. Marketing and business people in satellites, wireless, and electronics area who want to acquire a basic understanding of the technology will also find this book of interest.

Spacecraft Lithium-Ion Battery Power Systems Helps Readers Better Understand the Design, Development, Test, and Safety Engineering of Spacecraft Lithium-Ion Battery Power Systems Written by highly experienced spacecraft engineers and scientists working at the heart of the industry, Spacecraft Lithium-Ion Battery Power Systems is one of the first books to provide a comprehensive treatment of the broad area of spacecraft battery power systems technology. The work emphasizes the technical aspects across the entire lifecycle of spacecraft batteries including the requirements, design, manufacturing, testing, and safety engineering principles needed to field a reliable spacecraft electrical power system. A special focus on rechargeable lithium-ion battery technologies as they apply to manned and unmanned Earth-orbiting satellites, Cubesats, planetary mission spacecraft (such as orbiters, landers, rovers, and probes), and launch vehicle applications is emphasized. Using a systems engineering approach, the book smoothly bridges knowledge gaps that typically exist between academic and industry practitioners. Sample topics of discussion and learning resources included in the work include: Detailed systematic technical treatment of spacecraft LIB power systems across the entire lithium-ion battery life cycle Principles of lithium-ion cell and battery design, battery management systems, electrical power systems, safety engineering, life cycle testing, ground processing, and on-orbit mission operations Special topics such as requirements engineering, qualification testing, safety hazards and controls, reliability analysis, life modeling and prediction, on-orbit battery power system management, and decommissioning strategies New and emerging on-orbit space applications of LIBs supporting commercial, civil, and government spacecraft missions (International Space Station, Galileo, James Webb Telescope, Mars 2020 Perseverance Rover, Europa Clipper) Real space industry case studies of deployed Earth-orbiting satellite, astronaut, and planetary mission spacecraft lithium-ion batteries Overall, the work provides professionals supporting the commercial, civil, and government aerospace marketplace with key knowledge and highly actionable information pertaining to lithium-ion batteries and their specific applications in modern spacecraft systems.

Rajiv Kohli and Kash Mittal have brought together the work of experts from different industry sectors and backgrounds to provide a state-of-the-art survey and best practice guidance for scientists and engineers engaged in surface cleaning or handling the consequences of surface contamination. Topics covered include: - A systems analysis approach to contamination control - Physical factors that influence the behavior of particle deposition in enclosures - An overview of current yield models and description of advanced models - Types of strippable coatings, their properties and applications of these coatings for removal of surface contaminants - In-depth coverage of ultrasonic cleaning - Contamination and cleaning issues at the nanoscale - Experimental results illustrating the impact of model parameters on the removal of particle contamination The expert contributions in this book provide a valuable source of information on the current status and recent developments in surface contamination and cleaning. The book will be of value to industry, government and academic personnel involved in research and development, manufacturing, process and quality control, and procurement specifications across sectors including microelectronics, aerospace, optics, xerography and joining (adhesive bonding). ABOUT THE EDITORS Rajiv Kohli is a leading expert with The Aerospace Corporation in contaminant particle behavior, surface cleaning, and contamination control. At the NASA Johnson Space Center in Houston, Texas, he provides technical support for contamination control related to ground-based and manned spaceflight hardware for the Space Shuttle, the International Space Station, and the new Constellation Program that is designed to meet the United States Vision for Space Exploration. Kashmiri Lal "Kash" Mittal was associated with IBM from 1972 to 1994. Currently, he is teaching and consulting in the areas of surface contamination and cleaning, and in adhesion science and technology. He is the Editor-in-Chief of the Journal of Adhesion Science and Technology and is the editor of 98 published books, many of them dealing with surface contamination and cleaning. Also available Developments in Surface Contamination and Cleaning, Volume 1: Fundamentals and Applied Aspects (edited by Rajiv Kohli & K.L. Mittal). ISBN: 9780815515555. · Provides guidance on best-practice cleaning techniques and the avoidance of surface contamination · Covers contamination and cleaning issues at the nanoscale · Includes an in-depth look at ultrasonic cleaning