System for lowering e.g. rescue winch or fire extinguisher jet from helicopter, has winch or jet mounted on movable, preferably telescopic, counterbalanced arm in fuselage base

摘要

The system can be mounted in the base of the fuselage (1) and comprises a movable arm (9, 10) with the work device (11), e.g. winch or extinguisher, secured to its free end. A telescopic arm which can be pivoted in a horizontal plane is used. Counterbalancing is achieved using a telescopic counterweight (7) at the opposite end of the arm to the work device