Research on Charged Alkali Colloids for Aerospace Vehicle and Ground Based Power Generation.

Abstract

Results of the study of the fundamental physical processes and measurement of properties aimed at predicting the performance of two fluid liquid metal vapor EFD converters are presented. The condensation studies indicate that substantial alkali boiler concentrations (30% cesium) are required to produce appreciable homogeneous nucleation in alkali amalgam vapors. The case of heterogeneous condensation about ions is also studied. The results of breakdown studies for amalgam vapor mixtures with helium, nitrogen, and hydrogen show the latest gas to be the most desirable choice for efficient conversion. Generator studies indicate the existence of contact charging of liquid mercury droplets with surfaces of higher work function. The behavior of the generator is seen to depend strongly on the amount of recirculated condensate and current. An analysis is presented for the efficiency of neutralization of charges at the collector.

Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1975
Accession Number
ADA008182

Entities

People

  • Albert Solbes
  • Manuel Martínez

Organizations

  • Massachusetts Institute of Technology

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Accumulators
  • Aerospace Craft
  • Condensation
  • Conversion
  • Converters
  • Demographic Cohorts
  • Efficiency
  • Fluids
  • Gases
  • Generators
  • Ground Based
  • Hydrogen
  • Liquid Metals
  • Liquids
  • Metal Vapors
  • Vapors
  • Work Functions

Fields of Study

  • Physics

Readers

  • Combustion and Flow Dynamics.
  • Materials Science and Engineering.
  • Systems Analysis and Design

Technology Areas

  • Space
  • Space - Hall-Effect Thruster