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    3. The Sperry Retractable Ball Turret. SPERRY 25GSH-1

    The Sperry Retractable Ball Turret. SPERRY 25GSH-1

    Posted By: Oleksandr74
    Date: 13 Mar 2011 16:20:01
    The Sperry Retractable Ball Turret. SPERRY 25GSH-1

    The Sperry Retractable Ball Turret. SPERRY 25GSH-1
    Consolidated | 1944 | ISBN: N/A | English | 16 pages | PDF | 14.3 MB

    The Sperry Lower Retractable Ball mounted in the belly of the PB4Y-1 (B-24), is the deadly and efficient defender of the bomber's once soft underside. It was built especially for the PB4Y-1 (B-24) whose ground clearance calls for a ball turret that can be kept out of the way on fakeoffs and landings. Its guns sweep In a full circle and offer protection from any fighter who dips below the bomber's level. Its sight, the Sperry K-4, computes deflections automatically even when the gunner, swinging around below the plane, is unable to tell exactly which way he is facing.

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