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:
Oct. 28, 1986
Filed:
May. 02, 1985
M Samuel Moore, Northridge, CA (US);
Other;
Abstract
A helicopter turbine engine over-stress warning and protection system includes arrangements for sensing the engine temperature, the engine speed, and the output torque from the engine. An audible signal warning is provided which may vary as the over-stress limits are approached. For example, when the helicopter engine is at or above the over-stress limits, it may have a constant fairly loud tone into the pilot's earphones or into a speaker in the cockpit. This warning tone signal becomes interrupted and provides progressively greater periods of silence as the helicopter engine drops below the over-stress limits. The warning signal stops at a pre-set point such as, for example, when the engine is being operated from 5% to 15% below the over-stress limits. Dynamic response control circuits are provided to avoid false actuation of the alarm system; automatic limitation of the fuel flow to the engine may be provided in combination with a conveniently located override actuator; and arrangements may also be provided for automatically injecting water or alcohol into the engine as over-stress conditions are approached.