Accession Number:

ADA409180

Title:

Wind Tunnel Measurements of Windscreen Performance

Descriptive Note:

Corporate Author:

TEXTRON SYSTEMS CORP WILMINGTON MA

Personal Author(s):

Report Date:

2001-10-01

Pagination or Media Count:

8.0

Abstract:

Wind noise is recognized as one the primary environmental factors that limits the performance of battlefield acoustic sensors. Microphone windscreens are regularly used to reduce wind noise and the characterization of their performance is an important component of the acoustic sensor design, Textron Systems has extensive experience studying the performance of windscreens and have developed test methodology that allows for repeatable measurements in a controlled environment. Wind noise measurements are performed using a high-speedlaminar-flow, low-noise wind tunnel with an anechoic test section. A special test section is added to the wind tunnel to generate a turbulent flow. The turbulent wind velocity spectrum is measured using multi-axis hot wire anemometers. Comparative performance measurements of several windscreen designs are presented.

Subject Categories:

  • Acoustic Detection and Detectors

Distribution Statement:

APPROVED FOR PUBLIC RELEASE