Measuring and testing – Navigation – Take-off and landing monitors
Patent
1990-11-27
1992-06-02
Woodiel, Donald O.
Measuring and testing
Navigation
Take-off and landing monitors
364443, 374112, G01C 2100
Patent
active
051176890
ABSTRACT:
A method for determining Richardson Number, Ri, or its reciprocal, RRi, for clear air turbulence prediction using measured potential temperature profiles and determining the vertical gradient of potential temperature, d.theta./dz. Wind vector from the aircraft's instrumentation versus potential temperature dw/d.theta. is determined and multiplied by d.theta./dz to obtain dW/dz. Richardson Number or its reciprocal is then determined from the relationship ##EQU1## for use in detecting a trend toward a threshold value for the prupose of predicing clear air turbulence. Other equations for this basic relationship are disclosed together with the description of a method for combining of other atmospheric observables using multiple regression techniques to produce improved warnings of clear air turbulence.
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Jones Thomas H.
Manning John R.
Miller Guy M.
The United States of America as represented by the Administrator
Woodiel Donald O.
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