Alliedsignal Inc.

Scientific Monitoring Inc.

Joseph W Michalski, Jr

John K Harvell

Robert A Del Garbino

Craig A Freeman

A valve for the accurate control of fluid flowing through the valve. The valve has a valve body and a flow control mechanism. The valve body is a two-part body having a fluid flow section and a valve adjustment section. The fluid flow section has a fluid flow cavity. The fluid flow cavity further includes a flow control orifice area, which flow control surface being smaller in cross-sectional area than the fluid flow cavity. The flow control mechanism is able to vary the length of its major axis via a force provided by the valve actuator. As the major axis of the flow control mechanism decreases, the minor axis of the flow control mechanism increases at an amplified rate, said increase in the minor axis of the flow control mechanism accomplishes flow control and in combination with the valve actuator, flow control and fluid modulation.

Elliptical valve with nominal flow adjustment

For gas turbine engine mounted in an aircraft, a closed loop control system, and method therefor, for the inlet duct is provided. Under this control system the flow area of the inlet duct is varied by opening and closing a duct door. The control assures that the position of the door is such that the delta P across the engine will not inhibit the starting of the engine in flight.

Growing community of inventors

Phoenix, AZ, United States of America

Joseph W Michalski, Jr