Vortex advisory system

US4137764A · kind A · utility

Assignee

• The United States of America as represented by the Secretary of Transportation · US

Inventors

• James Hallock · Overland Park, US
• Edward Spitzer · Natick, US
• William D. Wood · Del Mar, US

Key dates

• Filing date: Sep 15, 1977
• Grant date: Feb 6, 1979
• Expiry date: Sep 15, 1997

Classification

• Technology area (CPC G): Physics
• CPC primary: G08G5/76
• WIPO field: Control
• WIPO sector: Instruments

Abstract

The separation between aircraft approaching a common runway is minimized by measuring the existing wind conditions at a preselected point relative to the runway threshold and basing a prediction of the movement of wake vortices on the measured conditions. The prediction of vortex movement is based upon a vortex advisory algorithm prepared from a plot of wind conditions which predictably remove vortices from the flight path.