US 12,189,081 B2
Icing detector
Hideki Soejima, Tokyo (JP); Mitsuru Kono, Tokyo (JP); Shuugo Yasui, Tokyo (JP); and Satoshi Okada, Tokyo (JP)
Assigned to SUBARU CORPORATION, Tokyo (JP)
Filed by SUBARU CORPORATION, Tokyo (JP)
Filed on Mar. 3, 2022, as Appl. No. 17/686,202.
Claims priority of application No. 2021-045694 (JP), filed on Mar. 19, 2021.
Prior Publication US 2022/0299675 A1, Sep. 22, 2022
Int. Cl. G01V 8/16 (2006.01); B64D 15/20 (2006.01)
CPC G01V 8/16 (2013.01) [B64D 15/20 (2013.01)] 11 Claims
OG exemplary drawing
 
1. An icing detector comprising:
an aircraft structure;
an exposed member comprising a post including a first end coupled to an outer surface of the aircraft structure and exposed to an outside of the aircraft structure, and an optical fiber cable wound around the post with at least a portion of the optical fiber cable being spaced apart from the post;
an optical fiber sensor covered by the aircraft structure, the optical fiber sensor being coupled to a second end of the optical fiber cable; and
a measuring device coupled to the optical fiber sensor, the measuring device being configured to emit light into the optical fiber sensor and measure a change in a frequency of backscatter of the light traveling through the optical fiber sensor, the change being due to the optical fiber sensor being strained and/or deformed by transmission of vibration and/or load to the optical fiber sensor when ice is formed on the exposed member.