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Acoustic reflector attachment compatible with native aircraft structure

  • US 6,378,377 B2
  • Filed: 04/23/1999
  • Issued: 04/30/2002
  • Est. Priority Date: 04/23/1999
  • Status: Expired due to Fees
First Claim
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1. A contaminant detection sensor for a wall with an exterior surface and an interior surface, the exterior surface being subjected to airflow in use, the detection sensor comprising a transmitter and receiver coupled to the interior surface of the wall at a first location and providing an acoustic energy pulse forming an acoustic wave transmitted along the wall, and a reflector discontinuity comprising a vibration reflector bonded on the interior surface of the wall at a position spaced from the transmitter, the vibration reflector comprising a bar extending outwardly from the interior surface and operable to reflect the acoustic wave transmitted from the transmitter through the wall and back to the receiver through the wall, and the reflected acoustic wave changing in characteristics when contaminants are present on the wall between the first location and the reflector bar.

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