Nasa outgassing compliant nasa esa outgassing qualified products test procedures. Fiber optic epoxy outgassing study for space flight. Material total mass loss in vacuum obtained from various outgassing systems. Arlon products meet nasa outgassing requirements rancho cucamonga, ca arlon recently updated data on their high performance laminate products that have successfully completed nasa testing for outgassing and total condensable volatiles according to astm e59593 standard method for total. A study on the physical and electrical characterizations of polymer aluminum pa capacitors. A compilation of low outgassing polymeric materials normally recommended for gsfc cognizant spacecraft introduction the new sophisticated series of goddard cognizant earth observing satellites together with the anticipated long lived communication, meteorological and explorer types have spawned new concepts in electrooptics instrumentation. The library maintains a list of book purchases suggested for long term library use, in the event that funding becomes available for this purpose.
Environmental testing pacific testing laboratories. Outgassing processing a detailed explanation of outgassing is on the following pages. Sep 18, 2008 open library is an initiative of the internet archive, a 501c3 nonprofit, building a digital library of internet sites and other cultural artifacts in digital form. As a nasa and jplapproved laboratory for testing of printed circuit board materials, ptl has also received continual laboratory suitability approval only laboratory for astm e595 testing from the defense logistics agency dla land and maritime department of defense, united states of america. Astm e595 15 standard test method for total mass loss. But a team of nasa engineers has created a new way to protect those instruments from its ill effects. Outgassing, emi silicones, and astm e59507 specialty. Modify existing or construct new code 546 facilities to meet program test requirements. Developed by nasa to screen low outgassing materials for use in space, the test determines the volatile content of material samples placed in a heated vacuum chamber.
Outgassing test facility brings new materials into space industry. Actual test data, or test data contained in nasa reference publication 1124, shall be submitted to the qualifying activity. Outgassing is a measure of the level of residual low molecular weight species including water if the material is not conditioned in a low moisture environment. Whats more, most bonding, potting, encapsulation and sealing applications dont need to meet a defined outgassing specification. Database for metallic and nonmetallic materials properties. Dec 07, 2005 nasa ref pub 1124 outgassing data for spacecraft materials rev.
Once established, these databases will be available to the entire community and will provide a valuable source of material outgassing information. Nasa technical note m h 04 p n z c 4 r 4 z experimental study in vacuum of the rateofrise outgassing measurement technique by geruld l. A free guide to outgassing testing testing according to the industry standard, astm e595, allows quantifying the outgassing performance of materials. These requirements may also apply to facilities used during assembly, test, and flight operations when imposed contractually to ensure safety of. Space grade requirements for electrical connectors nasa. Some customers specify deleting the seal, some opt for a bakeout, and some customers specify thermal vacuum outgassing. Gregory langley research center lungley station, hampton. Accreted organics contribute significantly to titans atmosphere. When complete, the databases will contain information on materials outgassing obtained using the astme1559 standard, and flight observations of mass accumulations.
Those technologies cover a broad range of areas, such as propulsion, nanotechnology, robotics, and human health. Heslin, may 1977, goddard space flight center, greenbelt, maryland. For almost half a century, the lab has been building a database on the performance of materials and components. Outgassing data, derived from tests at 398 k 125 c for 24 hours in a vacuum as per astm e 59584, have been compiled for numerous materials for spacecraft use.
Satellite contamination and materials outgassing effects. Data for a number of parker chomerics conductive elastomers, based on astm e595 testing done by nasa goddard spaceflight center, is presented below. Outgassing data for selecting spacecraft materials system. The interfacial seal on microd receptacles does not meet nasa outgassing requirements unless it is baked or thermal vacuum outgassed. The goal of maptis is to provide a singlepoint source for materials properties for nasa and nasa associated contractors and organizations. These plans generally describe methods for controlling contaminates and verifying that they have been prevented or abated such that the hardware will meet performance requirements. Guide of space grade requirements for electrical connectors melanie ott swales aerospace goddard space flight center table of contents introduction 1. For example, materials that release high levels of airborne molecular contaminants amcs can degrade the performance of sensors and circuit boards in satellites.
The actual test nasa runs on candidate materials is very expensive and time consuming. Nasa and esa maintain lists of materials with low outgassing properties suitable for use in spacecraft, as outgassing products can condense onto optical elements, thermal radiators, or solar cells and obscure them. Tga were used in the testing of a graphiteepoxy grep continue reading. News home technical info pdf library tech support pdfs. Welcome to the materials and processes technical information system maptis web site. Nasas outgassing db api is a dataset of materials intended for spacecraft use. Outgassing data for spacecraft materials, nasa tn d7362, september 1973. You can find useful information on nasa s technologies in techport, including descriptions of technologies, images, and. Nasa technical standards nasa technical standards system. Each nasa technical standard is assigned to a technical discipline. Save time and cost with modification codes for space grade. Researchpublisher partnershipsdata partnershipsapi and open corpus.
End users will typically test every batch of material they receive and reject any that do no pass the requirements. En0070238 nasa has tested and approved the use of cicoils flexxsil cables as a. Outgassing is a challenge to creating and maintaining clean highvacuum environments. As a result, silicone is often excluded from designs. Commercial space transportation document library nasa. Aeronautics educator guide pdf 15sep1999 3m aeronautics.
Nasa s technology portfolio management system techport is a single, comprehensive resource for locating detailed information about nasa funded technologies. And while there are cases when nothing but a low outgassing product will do, the truth is that many socalled generic adhesives inherently have low outgassing levels. Pdf material total mass loss in vacuum obtained from various. The normal specification limits or guidelines on outgassing for nasa applications are 1% tml max. Nasa technical standards nasa technical standards system ntss. While outgassing is a valid concern for a number of sensitive applications, there is a broad lack of understanding about silicone outgassing, as well as much misperception and confusion. Outgassing and permeation are often merged in casual vacuum discussions the devil is in the details. On page 12 following equation a8, the page should read. Find tantalum capacitor outgassing related suppliers, manufacturers, products and specifications on globalspec a trusted source of tantalum capacitor outgassing information. Materials and processes data for use in space on launchers, satellites, payloads. Outgassing data for selecting spacecraft materials vacseal inc. For short term use, the library will attempt to borrow a hard copy version of the book from another library through interlibrary loan ill. Pdf library of nasa educational publications aeronautics educators guide.
Learn more about this api, its documentation and alternatives available on rapidapi. A failure analysis shall be performed on each connector having failed during qualification. Outgassing and permeation from orings often constrain the. Check out the nasa outgassing db api on the rapidapi api directory. These selection arlon products meet nasa outgassing requirements application notes technology enabling innovation. Outgassing the physical process that creates that ohsoalluring new car smell isnt healthy for humans and, as it turns out, not particularly wholesome for sensitive satellite instruments, either.
This paper broadly addresses the topic of silicone outgassing and includes a survey of. Search search data catalog about developer resources. This nasa technical standard establishes requirements for evaluation, testing, and selection of materials that are intended for use in space vehicles and associated ground support equipment gse. The data presented are the total mass loss tml and the collected volatile condensable materials cvcm. Errata nasa tn d8471 an equation that describes material outgassing for contamination modeling, thomas m. Outgassing of adhesives and coatings can cause problems in optics used in space applications. Outgassing test facility brings new materials into space. Indeed, the rigors of space exploration have often been the driving force behind many new technological. The dataset is a compilation of information obtained from the goddard space flight center, the stanford research institute, and the jet propulsion laboratory. Developed by nasa to screen low outgassing materials for use in space, the test determines the volatile content of material samples placed in a heated vacuum. The activities in this educator guide are divided into three chapters. For further information about the outgassing data, please contact jeremy knipple. Download our free guide to learn more about outgassing testing and all relevant parameters. Materials and processes technical information system.
Outgassing data for selecting spacecraft materials system nasa. The use of silicone adhesives in space applications by kareem m. Influence of spacecraft outgassing on the exploration of tenuous. Outgassing test facility brings new materials into space industry industrial productivity. An equation that describes material outgassing for. En0070226 cicoil outgassed cables meet outgassing requirements. This compilation of outgassing data of materials intended for spacecraft use were.
Please select the respective link to access that disciplines standards. These requirements nasa outlines include having a total mass lost tml of less than 1% and collected volatile condensable materials cvcm of less than 0. This testing ensures that these materials have been screened by nasa and selected for space applications. Get the latest updates on nasa missions, watch nasa tv live, and learn about our quest to reveal the unknown and benefit all humankind. Jan 28, 2020 each nasa technical standard is assigned to a technical discipline.
Outgassing data for selecting spacecraft materials ntrs nasa. Reliability and other spacerelated characterizations of. Sign up today for free to start connecting to the nasa outgassing db api and s more. Pdf outgassing effect on spacecraft structure materials. Outgassing data for selecting spacecraft materials. If used for splicing, vacuum bake after and validate it for performance. To pass, a materials average total mass loss coming out of the vacuum must be less than 1 percent, and the condensable volatile material outgassed cannot exceed 0. Nasa materials and processes technical information system. Nasa ref pub 1124 outgassing data for spacecraft materials rev. Outgassing data for selecting spacecraft materials online. The industry standard test for measuring outgassing in adhesives and other materials is astm e595. From these parametric plots, the quasisteady pressure in a volume containing outgassing materials can be estimated. Nasa approval of cicoil flexxsil material cicoil flat.
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