The report documents phase II of a two-part study for the prediction of the velocity fields in the wakes of fixed-wing and rotary-wing aircraft. The material presented com prises one part of a larger program directed toward determining safe separation times and distances for aircraft operating in the air terminal traffic pattern. Thirty-three aircraft currently operating within the Air Traffic Control system are analyzed. Numerical data are presented in tabular and curve form for eleven of the aircraft, defining their respective wake velocity fields. A discussion of the assumptions and limitations of the analytical models used is included along with a discussion of possible correlation of the calculated values with test results. Author
Final rept. phase 2,
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