Fluid reaction surfaces (i.e. – impellers) – With measuring – testing – signalling or inspection means
Patent
1991-04-04
1993-04-27
Look, Edward K.
Fluid reaction surfaces (i.e., impellers)
With measuring, testing, signalling or inspection means
416232, 73178H, 244 1711, 340946, B63H 100
Patent
active
052057100
ABSTRACT:
The invention is a helicopter blade crack detection system for blades that are hollow and pressurized or evacuated to a low pressure A rotating assembly having a rotating indicator assembly photo-optically communicates to an airframe detection assembly providing high reliability, ease of maintenance, and EMI secured.
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Engels Geoffrey P.
Thomas Mark C.
Collier Stanton E.
Look Edward K.
Mattingly Todd
Singer Donald J.
The United States of America as represented by the Secretary of
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