IMPROVED LEAK DETECTION, CORRELATION OF ACTUAL LEAKAGE WITH INSTRUMENT INDICATIONS, EFFECTS OF HUMIDITY ON LEAKS AND CATEGORIZATION OF LEAK INFORMATION

Abstract

Reports on Propellant Ullage Decay (ME no. 495) and Use of a Flow Conversion Nomograph for leaks and Capillaries, (ME no. 484) are presented. The primary purpose of the ullage decay study was to determine a relationship between the helium leak rates and the actual ullage gas leak rates. The results of this study showed that the propellant gases flow at a rate equal to or slower than, helium. In many instances the escaping ullage gas (particularly in the case of nitrogen tetroxide) actually condensed in the leak path and eliminated any further gas leakage. The nomograph (ME no. 484) is submitted for information on flow rate conversions. By use of the nomograph the flow rate of any liquid at any pressure through the same path. The nomograph was developed theoretically; however, the gas portion has been proven experimentally.

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Document Details

Document Type
Technical Report
Publication Date
Mar 31, 1964
Accession Number
AD0436600

Entities

People

  • C. Fatino
  • C. Maze
  • G. Herbst

Tags

DTIC Thesaurus Topics

  • Anti-Tank Missiles
  • Atmospheres
  • Chemistry
  • Conversion
  • Diameters
  • Engineering
  • Equations
  • Flow Rate
  • Geometry
  • Government Procurement
  • Materials
  • Materials Engineering
  • Materials Science
  • Nitrogen
  • Pressure Transducers
  • Propellants
  • Rocket Oxidizers

Readers

  • Aerospace Test and Evaluation
  • Combustion science or combustion engineering.
  • Geodesy