The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 07, 1994
Filed:
Sep. 18, 1992
Applicant:
Inventor:
Joel Choisnet, La Frette S/Seine, FR;
Assignee:
Sextant Avionique, , FR;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01C / ;
U.S. Cl.
CPC ...
7317 / ; 73862195 ;
Abstract
An apparatus for the detection of the icing-up of an aircraft rotor. The apparatus has a sensor (10) for the tractive force and a sensor (11) for torque; for measuring respectively the axial force and the torque exerted on the shaft of the rotor. A device (12) calculates the ratio between these two quantities. A determination is also made, as a function of the flying conditions, of what should be the nominal value of this ratio in the absence of icing-up. Finally a device (12) compares the calculated ratio with the nominal ratio.