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:
Sep. 22, 1998
Filed:
May. 24, 1996
Shigetaka Tanaka, Susono, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota, JP;
Abstract
A control system for an aircraft that controls the set speed of the propeller governor and the degree of opening of the throttle valve using a single control lever. The speed setting mechanism of the propeller governor is directly connected to the power lever by a push and pull cable, and the set speed of the propeller governor changes in proportion to the stroke of the power lever. Therefore, the propeller speed changes in proportion to the stroke of the power lever. On the other hand, the throttle valve is connected to the power lever by a nonlinear cam and a push and pull cable. Therefore, the degree of opening of the throttle valve does not change in proportion to the stroke of the power lever (i.e., the change in the degree of opening of the throttle valve has a nonlinear characteristic), and the engine output power changes in the nonlinear manner with respect to the change in the propeller speed. By setting the nonlinear characteristic in the change in the engine output power with respect to the change in the propeller speed, an optimum relationship, between the engine speed and engine output power, for the aerodynamic characteristics of the aircraft can be obtained.