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The Australian army is gearing up to operate the Boeing AH-64E Apache attack helicopter, with first deliveries expected by the end of 2025. Four examples out of the 29 Apaches on order will arrive ...

Bevel gearing is another way of dealing with intersecting gear shafts. For bevel gears, the teeth centers lie on the surface of an imaginary cone, which is the "pitch cone" of the bevel gear. Two ...