Accession Number:

ADA109518

Title:

Chicago Monostatic Acoustic Vortex Sensing System. Volume II. Decay of B-707 and DC-8 Vortices.

Descriptive Note:

Final rept. Oct 76-Dec 79,

Corporate Author:

TRANSPORTATION SYSTEMS CENTER CAMBRIDGE MA

Personal Author(s):

Report Date:

1981-09-01

Pagination or Media Count:

136.0

Abstract:

A Monostatic Acoustic Vortex Sensing System MAVSS was installed at Chicagos OHare International Airport to measure the strength and decay of aircraft wake vortices from landing aircraft. The MAVSS consists of an array of acoustic antennas which measure the vertical profile up to 60-m altitude of the vertical component of the wind. The decay in wake vortex strength is measured as the vortex passes over successive antennas in the array. In this volume, the data are analyzed to examine whether landing B-707 and DC-8 aircraft need to be divided into Heavy and non-Heavy categories on the basis of wake vortex hazard. Volume I published in October 1979 described the MAVSS principles of operation, the hardware developed, and the data reduction methods employed.

Subject Categories:

  • Commercial and General Aviation
  • Acoustic Detection and Detectors
  • Fluid Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE