ON A NEW ULTRA-HIGH VACUUM PUMP,

Abstract

The theory of highly rarefied cascade flow was presented and a proposal for a new axial-flow (or radial flow) pump (or compressor) in the free-molecule range was made. An unconventional cascade was suggested which will produce an extremely high compression ratio (up to 30,000) in a single stage at very high blade speed (S = V sub b/square root (2 RT) = 20). This new pump (or compressor) can be used to reach any ultra-high vacuum state, i.e. and 'almost empty state'. (Author)

Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1964
Accession Number
AD0615149

Entities

People

  • Yau Wu

Organizations

  • Princeton University

Tags

DTIC Thesaurus Topics

  • Axial Flow
  • Compression
  • Compression Ratio
  • Compressors
  • Flow
  • High Vacuum
  • Pumps
  • Radial Flow
  • Square Roots
  • Vacuum
  • Vacuum Pumps

Fields of Study

  • Physics

Readers

  • Aerodynamics.
  • Fluid Dynamics.
  • Thermal Physics or Thermal Science.