Boots – shoes – and leggings
Patent
1982-10-25
1986-05-13
Krass, Errol A.
Boots, shoes, and leggings
340968, 356 285, 364427, 364428, 244181, 244182, 73178T, G01P 336, B64C 1310
Patent
active
045890706
ABSTRACT:
An aircraft is provided with wind velocity measuring equipment which measures the wind velocity both (1) close to the aircraft and (2) at a considerable distance such as one-half mile or a mile away from the aircraft; and a large difference in these two measured velocities indicates dangerous windshear conditions. Either a warning signal is given to the pilot, or automatic control apparatus is actuated, to avoid crash conditions. A single pulsed carbon dioxide (CO.sub.2) laser velocimeter may be mounted in the aircraft for measuring both the close-in and the distant wind speeds. The laser optic focus is shifted between the near and far measurements, and the return signal is time gated to increase signal-to-noise ratio.
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Vintslav et al, Lidar Measurements of the Wind by Spatial Filtering, Apr. 1978, pp. 442-446, Sov. J. Quantum Electronics, 8 (4).
Bartlett et al, Remote Measurement of Wind Speed Using a Dual Beam Backscatter Laser Doppler Velocimeter, Aug. 1976, vol. 15, No. 8, Applied Optics.
Klass, "Doppler Radar Tests Demonstrate Wind-Shear Warning Technique", 8-19-85, pp. 31-32, Aviation Week.
"FAA Plans to Buy Wind-Shear Alert Devices", 10-17-83, Washington Post, The Federal Triangle.
Black Thomas G.
Krass Errol A.
R & D Associates
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