About: Vacuum cementing

Facets (new session)
Description
Metadata
Settings
- Rule:
- Inverse Functional Properties:
- "Same As":

About: Vacuum cementing Goto Sponge NotDistinct Permalink

An Entity of Type : dbo:Election, within Data Space : dbpedia.demo.openlinksw.com associated with source document(s)
QRcode icon

http://dbpedia.demo.openlinksw.com/describe/?url=http%3A%2F%2Fdbpedia.org%2Fresource%2FVacuum_cementing&invfp=IFP_OFF&sas=SAME_AS_OFF

Vacuum cementing or vacuum welding is the natural process of solidifying small objects in a hard vacuum. The most notable example is dust on the surface of the Moon. This effect was reported to be a problem with the first American and Soviet satellites, as small moving parts would seize together.

Attributes	Values
rdf:type	Thing place dbo:Location schema:Place natural place crater Election
rdfs:label	Vacuum cementing (en)
rdfs:comment	Vacuum cementing or vacuum welding is the natural process of solidifying small objects in a hard vacuum. The most notable example is dust on the surface of the Moon. This effect was reported to be a problem with the first American and Soviet satellites, as small moving parts would seize together. (en)
dcterms:subject	Spaceflight technology Vacuum
Wikipage page ID	7879916 (xsd:integer)
Wikipage revision ID	1076974204 (xsd:integer)
Link from a Wikipage to another Wikipage	Stiction United States Galileo spacecraft Cold welding Galling Moon NASA Fretting Adhesion Spaceflight technology European Space Agency Spacecraft High-gain antenna Vacuum Soviet Union Vacuum Lunar dust
Link from a Wikipage to an external page	https://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19650019853_1965019853.pdf https://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19900014421_1990014421.pdf
sameAs	Vacuum cementing Vacuum cementing Vacuum cementing Vacuum cementing
dbp:wikiPageUsesTemplate	dbt:Annotated_link dbt:Citation_needed dbt:Clarify dbt:More_citations_needed dbt:Reflist dbt:Short_description dbt:Crater-stub
has abstract	Vacuum cementing or vacuum welding is the natural process of solidifying small objects in a hard vacuum. The most notable example is dust on the surface of the Moon. This effect was reported to be a problem with the first American and Soviet satellites, as small moving parts would seize together. In 2009 the European Space Agency published a peer-reviewed paper detailing why cold welding is a significant issue that spacecraft designers need to carefully consider. The conclusions of this appropriately titled study can be found on page 25 of "Assessment of Cold Welding Between Separable Contact Surfaces due to Impact and Fretting Under Vacuum". The paper also cites a documented example from 1991 with the Galileo spacecraft high-gain antenna (see page 2; the technical source document from NASA regarding the Galileo spacecraft is also provided in a link here). One source of difficulty is that vacuum (AKA cold) welding does not exclude relative motion between the surfaces that are to be joined. This allows the broadly defined notions of galling, fretting, sticking, stiction and adhesion to overlap in some instances. For example, it is possible for a joint to be the result of both vacuum welding and galling (and/or fretting and/or impact). Galling and vacuum welding, therefore, are not mutually exclusive. (en)
gold:hypernym	Process
prov:wasDerivedFrom	wikipedia-en:Vacuum_cementing?oldid=1076974204&ns=0
page length (characters) of wiki page	2758 (xsd:nonNegativeInteger)
foaf:isPrimaryTopicOf	wikipedia-en:Vacuum_cementing
is Link from a Wikipage to another Wikipage of	Vacuum Vacuum weld Vacuum welding
is Wikipage redirect of	Vacuum weld Vacuum welding
is foaf:primaryTopic of	wikipedia-en:Vacuum_cementing

Faceted Search & Find service v1.17_git139 as of Feb 29 2024

Alternative Linked Data Documents: ODE Content Formats:

RDF

ODATA

Microdata

About

OpenLink Virtuoso version 08.03.3330 as of Mar 19 2024, on Linux (x86_64-generic-linux-glibc212), Single-Server Edition (378 GB total memory, 55 GB memory in use)
Data on this page belongs to its respective rights holders.
Virtuoso Faceted Browser Copyright © 2009-2024 OpenLink Software