THE MEASUREMENT OF THE DC-7 TRAILING VORTEX SYSTEM USING THE TOWER FLY-BY TECHNIQUE

The report describes the technique and presents the results of a series of full-scale flight tests performed at NAFEC in September 1971, in which the wing trailing vortices of the Douglas DC-7 airplane were investigated by flying the airplane at low altitude, upwind of, and in close proximity to a 140-foot instrumented tower. Tower instrumentation consisted of hot-film anemometers located at 4-foot intervals and wind velocity and direction sensors. Vortex air flow visualization was by use of colored smoke. The data consists of tangential velocity distribution plots, peak recorded velocity as a function of time, airplane configuration and wind; vortex vertical and lateral transport velocities, and specimen time histories of the velocities recorded at individual sensors. (Modified author abstract)

• Corporate Authors:

  NATIONAL AVIATION FACILITIES EXPERIMENTAL CENTER

  ATLANTIC CITY, NJ  United States 
• Authors:
  • Garodz, L J
  • Miller, N J
  • LAWRENCE, D
• Publication Date: 1973-11

Media Info

• Pagination: 382 p.

Subject/Index Terms

• TRT Terms: Air; Equipment tests; Flow; Flow visualization; Overpasses; Passenger aircraft; Propeller blades; Vortex shedding; Vortices; Wakes
• Identifier Terms: Douglas DC-7; U.S. Federal Aviation Administration
• Uncontrolled Terms: Air flow
• Old TRIS Terms: Faa; Flyby; Test equipment
• Subject Areas: Aviation; Materials; Vehicles and Equipment;

Filing Info

• Accession Number: 00051659
• Record Type: Publication
• Source Agency: National Technical Information Service
• Report/Paper Numbers: FAA-NA-73-34 Final Rpt
• Files: NTIS
• Created Date: Mar 25 1974 12:00AM