Abstract: A device for winding and unwinding a multi-layer coil comprising a winding element in the form of a drum with a wire guidance assembly rotatably mounted relative to the drum and capable of axial movement with respect thereto. The wire guidance assembly includes a series of conical rollers mounted for rotation on axes substantially perpendicular to the axis of the drum. The wire guidance assembly is rotated relative to the drum and the surfaces of the conical rollers cause winding of the wire in multi-turn layers commencing at the drum and expanding in circumference outward to a maximum diameter.

Abstract: Disclosed is a protection device for a radiation sensor in a vehicle such as a missile. The protection device comprises a cap mounted on the missile by opposed flanges having a seal therebetween to form a gastight space between the cap and the missile. An attaching device such as a pair of shear pins of unequal resistance is provided between the flanges so that pressurization of the space causes the shearing of first one and then the other of such shear pins so that the cap leaves the vehicle by moving with one component of movement in the direction of sensing and at least another component of movement perpendicular to that direction.