CHARLES F. STEARNS
Engineering Consultant

EXPERTISE

• Gas Turbine and Missile Engine Controls
• Main Fuel Metering Systems
• Variable Geometry Actuators
• Afterburner/Reheat Systems
• Ramjet Controls
• Electron Beam Equipment
• Hydro-mechanical Systems
• Advanced System Studies
• Non-linear Simulations (MatrixX, Simulink, and Mathcad)
• Regulating and Metering Valves
• Temperature, Speed, and Pressure Sensing Servos
• Pumps
• Minimum Pressure and Special Valves
• Hydro-mechanical and Hydraulic Computing
• Component Accuracy and Transients Studies
• Special Test Equipment
• Engine Fuel and Hydraulic Systems
• Electro-hydraulic Interface Devices

Performed hydro-mechanical design engineering for the following:

• Control proposals
• Initial control designs
• Advanced control design
• Advanced engine control system studies

• Aircraft gas turbine fuel control systems
• Aircraft gas turbine variable geometry control systems
• Missile ramjet fuel control systems
• Special control systems (including an electron beam machine)

• Chandler Evans - Concepts and design analysis (4 years)
• Grimes Aerospace - Non-linear simulation with MatrixX on pneumatic valves; Simulink on hydraulic valves (2 years)
• Hamilton Standard - Concept and design for a PWC flow divider; Concept for a hydraulic backup system for an electronic propeller control; Spring design computer programs (5 years)
• Microtecnica (Italy) - (3 months)

• B.S. in Mechanical Engineering from the University of Rhode Island

46 U.S. patents pertaining to:

• Gas turbine hydro-mechanical control systems
• Electron beam equipment
• Electronic propeller control