Spray Characteristics of Pyrophoric Flare Nozzles

Abstract

Liquid spray behavior was studied in a wind tunnel using a non- burning fuel simulant for a number of different types of nozzles suitable for use with air-dropped, pyrophoric flares. Droplet size distribution and the shape and spread rate of the nozzle spray were recorded under a range of flight speed, altitude, and nozzle parameters such as orifice size, fuel pressure and flow rate, and atomizing gas pressure and flow rate. A pulsed laser camera system was used to record photographs of the spray. The superiority of gas-atomizing (pneumatic) nozzles in producing fine droplets was confirmed, while no purely hydraulic nozzle stood out as offering special potential for engineering application.

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Document Details

Document Type
Technical Report
Publication Date
Nov 01, 1985
Accession Number
ADB096851

Entities

People

  • D. W. Roberds
  • W. K. Mcgregor

Organizations

  • Arnold Engineering Development Complex

Tags

Communities of Interest

  • Air Platforms
  • Materials and Manufacturing Processes

DTIC Thesaurus Topics

  • Air Flow
  • Air Force
  • Altitude
  • Cameras
  • Dynamic Pressure
  • Engineering
  • Fiber Optics
  • Flight Speeds
  • Flow Rate
  • Gas Flow
  • Lasers
  • Measurement
  • Photographs
  • Photography
  • Physical Properties
  • Pulsed Lasers
  • Test Facilities

Readers

  • Aerosol Science/Aerosol Physics
  • Combustion and Flow Dynamics.
  • Combustion science or combustion engineering.

Technology Areas

  • Directed Energy