| 摘要 |
An arming device which requires both air vane rotation of a predetermined duration and target impact in sequence to complete arming. Movement of an arming rotor from an unarmed to an armed position is blocked by a plunger biased from the arming rotor path of movement but prevented from responding to the biasing action by a rotary element in the path of the plunger. The rotary element is freed for movement by the plunger only upon sensing of the sequential occurrence of the air vane rotation of predetermined duration and target impact.
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