The Bugspriegele is a flat-nosed cylindrical cardboard fitting used on the nose of BM 1000 mine to break up the streamlining and decrease the speed of the mine in des-cent. The mine must be streamlined in transit before release from the plane; this is ac-complished by a "Bugverkleidung" (streamlined false nose). This flase nose is released from the mine assembly prior to the release of the mine from the plane.

The tow types of Bugspiegles differ in the type of material used in their construction. The BS 1 is made of pressed paper, and the BS 2 is constructed of Dynal, a resin-treated pressed paper. These two types differs in the manner in which their releasing squibs are fired. The squibs in BV 2 are fired electrically by the bomb fuze, and the squibs of the BV 3 are fired mechanically by a lanyard attachet to the plane.

BS 1 and 2. The fitting is a cylindrcial, laminated-paper section, 20 inches long and 26 inches in diameter, open at its after the longitudinal axis of the forward end. This hole receives a securing rod, the after end of which is secured to a threaded recces in the charge case.

Bugverkleidung BV 2 and BV 3. A steel ogival section, 23 inches long and 16 inches in diameter consists of six overlapping, petal-shaped pieces held together at their for-ward and after ends respectively by a small nose cap and a steel ring. One petal is dril-led with a 1 inch hole to allow passage of an arming wire to two small-delay detonators on the charge case. This section is secured to the plastic afterbody by six screws. The securing rod, which also passes through the longitudinal axis of this section, secures at its forward end to the small nose cap and serves to attach both the forward section and the afterbody to the charge case.

Operation. The Bugspiegle is assembled as shown in figures 75a and 75b and is held in place by a screw in the nose of the BM 1000 mine. The BV 2 and BV 3 consist of several petals which are held in place by the rod shown in the figures. Upon release of the mine from the plane, the squibs of the BV are fired, releasing the holding rod, and the petals that make up the BV fall off, leaving only the Bugspiegle.

The Bugspiegle was abandoned because no appreciable increase in dropping height could be obtained. The maximum height from which a BM 1000 could be dropped with a Bugspiegle was 8000 feet.