Development of a Hydrazine Gas-Generation System for the Large Object Salvage System (LOSS)

Abstract

The report describes the development and testing of a self-contained hydrazine-fueled, underwater gas-generation system designed to provide large volumes of noncondensable gas for a salvage buoyancy application. This system is capable of generating sufficient gas to displace 200 L tons of seawater at a depth of 850 feet. The catalytic decomposition of monopropellant hydrazine is used to produce hydrogen and nitrogen gases which serve as the buoyancy media. The hydrazine gas generation system was mated with the LOSS(Large Object Slavage System) pontoon and successfully tested in a shallow water demonstration of the integral lift system. In this demonstration, a 74 L ton object was salvaged from a depth of 90 feet. The success of this in situ test demonstrated the suitability and practicality of using monopropellant hydrazine to produce large volumes of buoyancy gas.

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Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1973
Accession Number
AD0774467

Entities

People

  • K. W. Tate

Organizations

  • Naval Facilities Engineering Service Center

Tags

Communities of Interest

  • Energy and Power Technologies
  • Human Systems
  • Materials and Manufacturing Processes
  • Weapons Technologies

DTIC Thesaurus Topics

  • Check Valves
  • Chemistry
  • Civil Engineering
  • Combustion
  • Data Acquisition
  • Fluids
  • Fresh Water
  • Gages
  • Instrumentation
  • Material Degradation Processes
  • Measurement
  • Pressure Gages
  • Pressure Measurement
  • Pressure Regulators
  • Reactor Operation
  • Relief Valves
  • Transducers

Readers

  • Marine Hydrodynamics
  • Rocket Propulsion.
  • Systems Analysis and Design