Vacuum chamber translation
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Vacuum chamber translation positioning mechanism and welding power supply controller

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Published by National Aeronautics and Space Administration, National Technical Information Service, distributor in [Washington, DC, Springfield, Va .
Written in English

Subjects:

  • Mechanical engineering.,
  • Welding.

Book details:

Edition Notes

Other titlesPositioning mechanism and welding power supply controller.
Statementprepared by James E. Smith, Jr. and John L. Cashon.
SeriesNASA-CR -- 184465., NASA contractor report -- NASA CR-184465.
ContributionsCashon, John L., United States. National Aeronautics and Space Administration.
The Physical Object
FormatMicroform
Pagination1 v.
ID Numbers
Open LibraryOL14686093M

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  Welding in the vacuum of space represents an important and fundamental problem for space exploration. Repairs or connection of metal components on orbit or during travel to the moon or distant planets may be required. Cracks or holes in spacecraft skin or supporting structures external to the pressurized section will require some type of repair that must be permanently made to the skin or Author: James E. Smith, John L. Cashon. Calculating the pressure in vacuum chambers Rafael Seraphim The pressure in a vacuum chamber can be described by using the following equations: Pressure in the chamber P1 [mbar] Pressure in the pump P2 [mbar] Conductance C [ls] Gas load/throughput Q [mbar*l/s] Pump nominal pumping speed S [l/s] Pump effective pumping speed Seff [l/s] 1 ˚˜ = 1. * Refers to all vacuum chambers, beam lines and other enclosures used on the accelerators or stand alone. 1. Basic design • All vacuum vessel designs must be consistent with the design standards in Australian Standard AS and maintain a Hazard Level of E as per the design conditions. Producing a vacuum chamber means de fining the boundary conditions (inner and outer envelopes, operational constraints, etc.), choosing the material, designing the parts, manufacturing and assembling these parts together and putting them under vacuum. This paper gives the methodology, methods and hints for designing vacuum chambers. 1 Introduction.

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