Patent ID: 6189837
Filing Date: 2001-02-20
Classification: B64C

Abstract:
In an aircraft including a battery, a hydraulically-operated aircraft component, and a hydraulic system having a return line, an improvement for moving a particular aircraft component in a desired direction during an emergency situation, the improvement comprising:(a) a hydraulic transfer cylinder assembly comprising:(i) a housing having a first compartment, a second compartment fillable with a hydraulic fluid, and a piston separating the first and second compartments, the second compartment including an output port in hydraulic communication with the particular aircraft component;(ii) a cartridge including a main firing element, the cartridge being located at one end of the housing and an end cap being located at the other end of the housing, the piston being located therebetween, the output port being located in the end cap; wherein activation of the cartridge causes the main firing element to produce expanding gas that enters the first compartment and forces the piston to translate, thus forcing hydraulic fluid out the output port; wherein clamps, bolted to the end cap and assembled to locate between lugs in the transfer cylinder housing, maintain the installed location of the output port in the end cap relative to the housing during activation; and(b) means for ensuring the pressurized hydraulic fluid of the transfer cylinder assembly enters the hydraulically-operated component at a location appropriate to force the component to move in the desired direction.