Abstract: The invention pertains to a method for evaluation of ground combat vehicle manoeuvring during a mission performed by the ground combat vehicle. The method comprises the steps of during the mission registering (S1) mission related information comprising at least image and audio information using a sensor device (3) of the ground combat vehicle, and after completion of mission to reproduce (S2) the mission related information using a playback device (9) if the ground combat vehicle.

Abstract: A concrete floor finisher for finishing newly-placed concrete. The machine comprises a rotor hub, a plurality of rotor arms on the hub for rotation about an axis, a blade pivotable on each arm, and a motor for driving the rotor hub. The pitch of the blades is adjustable depending upon the condition of the wet concrete, by a piston and cylinder centrally located about the axis of rotation of the rotor, and a stud connected at one end to the blades and at its other end engaging a portion of the piston to adjust the pitch of the blades in response to the axial displacement of the piston.