Abstract: A method and apparatus for stabilizing relatively high-dynamics devices (e.g. a sight) mounted on a low-dynamics support such as a tank. Movement of the low-dynamics support is determined by means of an inertial central sensor block that may comprise a strapdown set of gyros or gyros and accelerometers. Stabilization is achieved by a two-step process in which the individual high-dynamics devices are stabilized with respect to the support by means of large bandwidth control loops. The much slower support movement is applied to a superposed loop of appropriately smaller band-width. Compensation thereby takes place by specifying a reference value for the control loops of the higher-dynamics devices.

Abstract: A method and apparatus for aiming indirectly aimable weapons free from tipping and tilting angle and independent of the oblique position of the weapon. The position of the weapon is supplied with respect to an earth coordinate system by a position reference system. These values, along with theoretical angular values derived through ballistics computations, are separately converted to a coordinate system that is fixed with respect to a weapon platform. The weapon is aimed in accordance with differences formed between the theoretical and actual positions of the weapon. A cross-hair that indicates actual position is displaced laterally on a screen when the weapon is pivoted and vertically when the weapon is raised or lowered. The lateral and elevation movements of the weapon are decoupled allowing the correct position to be directly and independently set with respect to both axes.

Abstract: A synchronizing device for gear shift mechanisms. The synchronizing device has one of the friction cone ring members coated with a wear-resistant molybdenum sprayed thereon. The other friction cone member has a manganese-alloyed carbon steel sprayed thereon. The manganese-alloyed carbon steel consists of a steel with 0.7 to 0.9 percent carbon and 0.6 to 0.8 percent manganese. The preferred composition is 0.8 percent carbon and 0.7 percent manganese.