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. 10, 1986
Filed:
Jul. 01, 1983
David J Hawes, Pierrefonds, CA;
Allied Corporation, Morris Township, Morris County, NJ (US);
Abstract
A method and apparatus for acceleration limiting a gas turbine engine (10) is disclosed. A proportional fuel control (11) regulates the fuel flow Wf from a hydromechanical unit (36) based upon an error signal E representing the difference between a demanded speed signal Nd and an actual speed signal Ng. The demanded speed signal Nd is generated by an integrator (32) as the time integral of the difference between the demanded signal Nd and a scheduled speed signal Ngs. Additionally, the difference signal is limited between an upper limit A1 and a lower limit D1 prior to the integration by a comparator (28) and a limiter circuit (30). The acceleration limit, A1 is generated as a function of a nondimensional parameter ratio (dN/dt.times.N)/Wf.