PECS provides main engine hydromechanical fuel controls for aerospace including regional jets, commercial and military helicopters, industrial power generation, marine main power systems and missile ramjets. Applications include aircraft turbo-fan, turbo-shaft, turboprop, auxiliary and sub-system power unit controls, marine turbo-shaft controls, missile/target drone ramjet controls and industrial power and micro-turbine controls. Several production programs utilizing PECS controls include: Bell UH-1 (Huey), Boeing Chinook CH-47F & CH-47D, Kaman K-MAX, Avro Regional Jet, and Bell 407 & 430. In addition the Boeing Comanche pump and HMU has been developed, tested and qualified. PECS HMU products have logged over 6.4 million operating hours for all applications since production began.

Our main engine fuel control architectures are tailored to meet the specific needs of each application and include design features that meet customer / federal requirements in terms of weight, cost, reliability, redundancy and back-up systems. In addition, PECS has the capability to provide related Engine Control Systems and accessories including; flow dividers, afterburner and bleed valve controls and other miscellaneous control components.

PECS fuel controls can be either integrated with one of our world-class pumping systems into a single efficient pump and control package or as a stand alone fuel control package. When combined with our low cost high technology electronic Engine Control Systems, PECS offers a completely integrated fuel control systems package consisting of pump, HMU and electronic control. Either product packaging solution be it pump/HMU or pump/HMU/electronic control offers single source integration and value by reducing procurement and engineering costs. This single supplier interface provides an OEM the ability to source a proven integrated control system prior to incorporation on

engine, while offering other added benefits.

PECS’s system architectures are designed to provide OEM’s the most cost effective, reliable and weight effective solutions. Typical fuel control design architectures include:

Torque-Motor Systems

PECS torque-motor based systems provides flow scheduling using torque-motor control with integrated position feedback for high accuracy flow regulation in a low cost / light weight package (IPC-20). Other similar architectures employ torque-motor based flow-metering regulation systems to control variable pump output (IPC-10). This latter type system is extremely beneficial for today’s modern high performance aircraft that utilize the fuel supply as a heat sink for engine cooling needs.