Bend limiting stiff leader and retainer system

Details Bend limiting stiff leader and retainer system Bend limiting stiff leader and retainer system

G - Physics

02

B

88/97.5

G02B 6/44 (2006.01) F41G 7/32 (2006.01) F42B 15/04 (2006.01)

Patent

CA 2000672

ABSTRACT A fiberoptic leader (20) connected between a missile (10) and a launch tube is paid out upon missile launch with a controlled degree of bend in the fiberoptic fila- ment (50), and is furthermore protected from blast effects in the launch. The fiberoptic filament (50) is stiffened within a leader (30) comprised of a TEFLON sleeve (52) insulating the fiberoptic filament (50). A protective sheathing of high tensile strength longitudinally wires (54) are disposed about and encase the TEFLONTM sleeve (52), and in turn are encased within an outer sleeve. The stif- fened leader is led along the longitudinal length of a retainer (20) attached to the side of the missile. The retainer (20) is disposed upon a longitudinal portion of the missile in a channel. The stiffened leader (20) is laid against and under one of the retainer arms from the aft end of the missile (10), where the fiberoptic leader (30) is fed out during launch, to a forward end of the missile (10) and retainer (20). The leader (30) is then led across the width of the channel to the opposing arm of the channel. The stiffened leader (30) is then led partly aft along the opposing arm of the retainer (20) and then out to an open longitudinal slot defining the ends of the channel and is coupled to a fixed point within the launch tube from which point optical communications are provided to the missile (10) during flight. As the missile (10) is launched, the bend propagates down the retainer (20) tear- ing the stiffened leader from a longitudinally perforated tape which secures the leader (30) into and under one of the arms of the retainer (20).

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