Measurement of Aircraft Wakes at 250-Meter Altitude With a 10.6-Micron CW Laser Doppler Velocimeter

Details

• Creators:
  Burnham, D. C. ; Hallock, J N ; McWilliams, I. ; Fantasia, J. F. ; Winston, B.
• Corporate Creators:
  John A. Volpe National Transportation Systems Center (U.S.)
• Subject/TRT Terms:
  • Wakes
  • Aircraft
  • Laser doppler velocimeters
  • Measurement
  • Altitude
• Resource Type:
  Tech Report
• Geographical Coverage:
  Chicago (Illinois) ; New York (New York) ; United States
• Corporate Publisher:
  John A. Volpe National Transportation Systems Center (U.S.)
• Abstract:
  The use of a CW laser Doppler velocimeter (LDV) to study aircraft wake vortices began in 1969 (Ref. 1). This early development of the techniques culminated in measurements on wakes of landing aircraft at the John F. Kennedy International Airport in 1974 and 1975 (Ref. 2). These measurements involved aircraft at altitudes belwo 100 meters. In late 1975, a similar LDV system was used to measure wake velocity profiles from aircraft at altitudes up to 250 meters (Ref. 3). Based on this work, the Transportation Systems Center (TSC), under the sponsorship of the Federal Aviation Administration, developed a new scan pattern (Ref 4.) which yields good high-altitude vortex data, and is being used to collect data on the wakes of aircraft landing at Chicago's O'Hare International Airport.
• Format:
  PDF
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/32567/dot_32567_DS1.pdf
• File Type:
  [PDF - 1.13 MB]
• Collection(s):
  Volpe Center
• Main Document Checksum:
  urn:sha-512:adea51b552803ca68a6c40aa69ce9510782b4f6f259b4656305a6e0c11106493fa61018ce8ddcfb27f71dc3de94bcdba4e4c2ec6d6708abe2b5ede1ef14a7df6