The Integrated Actuation Package (IAP^Tm ) is designed as a self-contained system for use in fly-by-wire or other dedicated hydraulic power supply applications. Electric power is supplied to the unit to drive a constant speed motor coupled to a variable displacement piston pump. The IAP^Tm includes: a system filter, accumulator used as system reservoir and thermal expansion chamber and a boost pump for positive piston pump inlet pressurization.

The IAP^Tm technology is an outgrowth of Goodrich successful servo Hydraulic Power Units. As such it shares the ability to match flow and pressure to load demand, avoiding the excess heat generation of constant pressure operation. The design will accept mechanical, electrical or optical input signals. Flow reversal is achieved by servo-controlled positioning of the over-center-type piston pump. Highly accurate, fast actuator position response is proportional to input signal.

The IAP offers many advantages over conventional central hydraulic systems:

Survivability - The IAP can be remotely located on the aircraft, connected to the aircraft electric power supply and control system through small, easily redundant power cables, and electrical, fiber optic or mechanical control signal cables. This eliminates long hydraulic lines and the associated weight of lines, fittings and hydraulic fluid, and reduces the sources of potential fluid leakage to a minimum.

Reliability - Since the IAP is a self-contained system it is not subject to secondary failure from shared contaminated hydraulic fluid.

Efficiency - The pump is servo controlled, developing only the pressure and flow necessary to work against the static load and to respond to position commands. In addition, pump output flows directly to the actuator, eliminating the need for high-flow servo control valves and their associated high-pressure drop, weight, volume and impact or system reliability.

Long Life - The pump develops only the minimum pressure needed. The pump’s high-pressure components are not continuously subjected to max pressure. This minimizes power unit fatigue.

Consistency - As a constant-speed and flow reversible unit, the IAP elimantes continuous stop-start-reverse cycles.