Measuring and testing – Fluid flow direction – With velocity determination
Patent
1998-06-03
2000-05-16
Williams, Hezron
Measuring and testing
Fluid flow direction
With velocity determination
367 94, 340949, 340968, G01F 1300, G01S 1500
Patent
active
060620765
ABSTRACT:
Two techniques for detecting vortices and their associated circulation are disclosed. The first is termed a closed path configuration, and the second is termed the dual path configuration. These techniques are useable for the detection of wake turbulence especially in the vicinity of airport runways, which results from wing tip vortices generated by aircraft during take-off and landing. The systems are similar in that they use ultrasonic measurement techniques to determine the circulation about defined areas. The circulation is reflective of the vorticity associated with trailing vortices, which are manifest within the area.
REFERENCES:
patent: 3671927 (1972-06-01), Proudian et al.
patent: 3889533 (1975-06-01), Balser
patent: 4336606 (1982-06-01), Heard
patent: 4432237 (1984-02-01), Schmidt et al.
patent: 4493217 (1985-01-01), Engler et al.
patent: 4831874 (1989-05-01), Daubin et al.
patent: 5262773 (1993-11-01), Gordon
patent: 5309100 (1994-05-01), Song et al.
patent: 5343744 (1994-09-01), Ammann
patent: 5550789 (1996-08-01), Silverstein
H. Johari, et al., "Ultrasound Methods for Direct Measurement of Circulation," 49th Annual Meeting of APS/DFD, Mechanical Engineering Department, Worcester Polytechnic Institute, Worcester, MA (Nov. 25, 1996).
R.H. Smith, et al., "The Direct Measurement of Circulation in Free Surface Vortices," AIAA 95-0104, 33rd Aerospace Sciences Meeting and Exhibit, Worcester Polytechnic Institute, Worcester, MA (Jan. 9-12, 1995/Reno, NV).
F.J. Weber, et al., "The Circulation Measurements About a Rapidly Pitching Airfoil Using an Ultrasonic System," AIAA 95-2269, 26th AIAA Fluid Dynamics Conference (Jun. 19-22, 1995/San Diego, CA).
J. Moreira, et al., "Direct Measurement of Delta Wing Vortex Circulation Using Ultrasound," AIAA 97-0743, 35th Aerospace Sciences Meeting & Exhibit, Worcester Polytechnic Institute, Worcester, MA (Jan. 6-10, 1997/Reno, NV).
"Aircraft Wake Vortices: A State-of-the-Art Review of the United States R&D Program," Report No. FAA-RD-77-23, U.S. Department of Transportation, Federal Aviation Administration, Systems Research and Development Service, Washington, D.C. 20591, Final Report (Feb., 1977).
E. A. Thomson, "Experiment Will Use Sound Pulses to Probe Tidal Mixing," MIT Tech Talk, p. 6 (May 15, 1996).
H. Johari, et al., "Ultrasound Methods for Direct Measurement of Circulation," Abstract for Experimental Techniques, Bull. of the American Physical Society, vol. 41, No. 9, p. 1764 (1996).
Durgin William W.
Johari Hamid
Kwok Helen C.
Williams Hezron
Worchester Polytechnic Institute
LandOfFree
Ultrasonic monitoring method and system for wake turbulence usef does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Ultrasonic monitoring method and system for wake turbulence usef, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Ultrasonic monitoring method and system for wake turbulence usef will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-249664