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


  • 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
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.

Many translated example sentences containing "vacuum chamber" – French-English dictionary and search engine for French translations Translate texts with the world's best machine translation technology, developed by the creators of Linguee. Linguee. Look up words and phrases in comprehensive, reliable bilingual dictionaries and search.   As a result, when the chamber pressure reaches the high and ultra-high vacuum ranges, the drawdown becomes much slower and the pump’s job becomes more difficult. In order to understand the operation of a pump in the molecular flow range it is useful to imagine the molecules in a vacuum chamber as billiard balls on a pool table (Fig. 6) that. The term sample transfer covers two different motions: (1) Long travel between two chambers or a load lock and chamber, through vacuum isolation valves using equipment called transporters, probes, or transfer devices; and (2) 3-D motion needed to transfer a sample from a motion device or storage area to a sample stage/holder. Also known as vacuum degassing chambers, these remove trapped air from mixtures such as paint and mold resins.. Aluminum containers are lightweight, corrosion resistant, and good for general use.. stainless steel containers have excellent corrosion resistance and are commonly used in laboratories.. Soda-lime glass containers are clear, so the material inside is visible from all angles.

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