Communications: radio wave antennas – Antennas – Balanced doublet - centerfed
Patent
1982-07-30
1985-03-26
Tubbesing, T. H.
Communications: radio wave antennas
Antennas
Balanced doublet - centerfed
73660, G01S 1308, G01H 304
Patent
active
045076588
ABSTRACT:
A millimeter wave radar mounted on a turbine installation for monitoring turbine blade vibration. The waveguide conducts signals from a millimeter wave radar unit outside of the turbine and directs the signal to the rotating blades and directs the reflected signals therefrom back to the radar unit. A sealing arrangement is provided where the waveguide passes through the turbine's outer casing and the waveguide itself within the turbine is positioned within a waveguide support member which extends from the aperture in the turbine casing to a point in the vicinity of the turbine blades where it is immovably supported. The waveguide additionally has an internal sealing arrangement transparent to the radar signals for maintaining pressure integrity.
REFERENCES:
patent: 3973259 (1976-08-01), Hellgren et al.
patent: 4346383 (1982-08-01), Woolcock et al.
patent: 4413519 (1983-11-01), Bannister et al.
Schron D.
Tubbesing T. H.
Westinghouse Electric Corp.
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