Measuring and testing – Navigation – Take-off and landing monitors
Patent
1993-02-16
1994-11-01
Woodiel, Donald
Measuring and testing
Navigation
Take-off and landing monitors
73178T, 73180, G01C 2100
Patent
active
053598881
ABSTRACT:
An apparatus detects an air turbulence and wind shear encountered by an air vehicle having an accelerometer sensing air vehicle vertical acceleration. The apparatus includes a pressure sensor having a pressure sensing port for sensing a pressure parameter of a local air flow which changes with changes in the local airflow turbulence, and a fast time constant pressure transducer coupled to the pressure port for generating a transducer signal representative of the parameter. Differentiating means calculates a time derivative of the transducer signal and provides a turbulence signal representative of the time derivative. Subtracter means provides the difference between the turbulence signal and a vertical acceleration signal from the accelerometer, to provide a wind shear indicating signal indicative of an increase in air turbulence. The apparatus also preferably includes a second differentiating means for calculating a time derivative of the wind shear indicating signal and provides a turbulence severity signal which when above a selected level indicates that corrective control action should be taken.
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Romanchik Richard A.
The B. F. Goodrich Company
Westman Nickolas E.
Woodiel Donald
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