Abstract: A helical conveyor is especially adapted to convey cylindrical articles such as projectiles quickly between two points. The helical conveyor may include an internal helical skeleton about which a helical casing rotates. Alternately, the helical conveyor may be realized by an external helical skeleton supporting a large number of cylindrical rollers which are disposed in a flighted configuration to approximate a helix. The skeleton is a spring-like structure which allows great flexibility in operating the conveyor to transport loads. A motor is used for driving the conveyor to transport articles. The conveyor may be mounted to a vehicle such as an ammunition supply vehicle to provide for the rapid supply of projectiles to a tank, self-propelled howitzer, or similar weapon.