Apparatus and method for measuring static deflection of runway s

Details Apparatus and method for measuring static deflection of runway s Apparatus and method for measuring static deflection of runway s

1979-06-07

1980-11-04

Little, Willis

Geometrical instruments

Area integrators

Electrical

33286, G01B 1130

Patent

active

042311608

ABSTRACT:
A target comprising a displacement sensitive photodiode perpendicularly disposed with respect to the measuring axis perpendicular to the runway surface is provided above a runway surface under aircraft load. A laser beam is directed towards the diode and signal processing circuits coupled between the photodiode and display means during aircraft loading, and subsequent to aircraft load removal provide signals to the display means representative of displacement of runway surface.

REFERENCES:
patent: 3603688 (1971-09-01), Smith-Varniz
patent: 3970391 (1976-07-01), Johnson et al.

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