An energy recovery and storage apparatus especially well adapted for use
with flight control surfaces on airborne mobile platforms, such as
aircraft. In one form the apparatus includes a ram-like element coupled
to a portion of a flight control surface. An accumulator holds a flexible
container having a compressible medium contained within the flexible
container. The accumulator is in fluid communication with a housing of
the ram-like element. When the flight control surface is moved from a
deployed to a retracted position, the energy acting on the surface is
recovered and stored in the compressible medium as the ram-like element
forces fluid from its housing into the accumulator. When the flight
control surface is to be deployed again in a subsequent cycle, the stored
energy in the compressible medium is used to urge the ram-like element
into an extended position, thus assisting in deploying the flight control
surface. The various preferred embodiments all enable lower power,
smaller and less expensive actuators to be used to control a flight
control surface.