Rocket Motor Peak Noise Reduction Program.

Abstract

This report describes the design, test and analysis of two techniques being developed for reducing the peak noise produced by a shoulder-fired rocket weapon system. The tests have verified that the peak noise produced by the M-72 rocket motor can be reduced at the gunner's position by 10 db with a baffled cylinder suppressor and by 1.3 db by aerodynamically shaping the nozzle closure. Analysis of the unsuppressed and suppressed peak noise generated by the M-72 rocket motor indicate that the peak noise in the near field is produced by the energy associated with a strong pressure wave that can be correlated with spherically symmetric point explosion data. The hardware test data base and analysis techniques developed have provided a basis for the design of prototype field weight suppressor systems for protecting the gunner and crew from the intense peak noise produced by both man-portable and shoulder-fired rocket weapon systems. (Author)

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Sep 30, 1978
Accession Number
ADA061063

Entities

People

  • Charles R. Carter

Organizations

  • Boeing

Tags

Communities of Interest

  • Energy and Power Technologies
  • Weapons Technologies

DTIC Thesaurus Topics

  • Data Analysis
  • Databases
  • Fluid Dynamics
  • Geometry
  • Instrumentation
  • Materials
  • Measurement
  • Noise Reduction
  • Rocket Engines
  • Shock Waves
  • Sound Pressure
  • Standards
  • Test And Evaluation
  • Test Fixtures
  • Transducers
  • Waves
  • Weapon Systems

Fields of Study

  • Physics

Readers

  • Acoustics.
  • Marksmanship and Weaponry.
  • Missile Defense Systems.