Air Defense System requires fast movement of the turret to detect and attack the flying target of enemy. In order for the air defense system to operate accurately and properly, it is necessary to optimize the design of the motor brake system. The air defense system that is not designed properly has possibility of low performance of the gun turret and environment of operators. The previous air defense system had such flaw in its design and it caused much noise and current in the operation of the turret. In order to resolve this flaw, we changed the position and design of the components of the motor brake system to reduce load and achieved the 62.5% reduced current and 40% reduced noise of the motor brake system compared to the previous design.

The objective of this study is to construct the inspection standards of motorcycle brake system performance. Based on the Korean Motor Vehicle Safety Standards (KMVSS), the Korean Motor Vehicle Inspection Standards (KMVI), the inspection standards of the International Motor Vehicle Inspection Committee (CITA), United Kingdom and Japan, three alternative brake performance criteria were suggested. The brake performance tests for 129 various models of used motorcycles were conducted for verifying the developed test equipment and suggested three alternative criteria. The total brake performance criterion is appropriately suggested to set at 50 %. Considering the KMVI or the CITA, the brake performance criterion of rear axle may suggested to set at 20 % or 25 %, either.