Abstract
It is widely accepted that the effectiveness of cannon in the air-to-air combat scenarío depends on the rate of fire. Present firing rates for 20-30 mm aircraft cannon range from 600 to 1500 rounds per minute. New developments are aimed towards even higher rates of fire. With these higher rates of fire more energy is likely to be transferred to the aircraft fuselage, resulting in possible structural fatigue damage. To absorb the recoil forces several types of recoil system have been developed and are presently in use. Conventional recoil systems are not, however, ideal for very high rates of fire and hence alternatives must be investigated.With this work the use of an anti-resonant device to reduce the transmission of forces to the aircraft fuselage for a high rate of fire is investigated. Antiresonant isolators operate on the principle that a condition of little or no motion may be enforced at specific points of interest on a system at particular frequencies, through suitable tuning of the system. This is essentially achieved by designing the isolator system in such a way that inertial forces are used to react spring forces under stationary conditions.
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