A Study On The Improving Civil Aviation Safety

The civil aviation accidents are studied in this paper, basing on the system safety theory and the optimal theory. The similar incidents may occur in the future, therefore, the supervising and management for aviation safety should be reinforced, and the process of the design, operation and maintenance should be improved. Then, a suggestion of enhancing a human survival rate in the aviation disaster is proposed. Further, it points out that the more precaution measures should be made in order to suppress the incidents. Some specific safety problems are analyzed in detail. These novel ideas on which should be emphasized in the technical management, coping with the characteristic of the aviation, are as follows.The first, estimating the survival rate in the aircraft accident. If the"Concorde"aircraft aborted takeoff, the survival rate would have been at the range of 51%~83% in the accident, derived from the accident analyses basing on the law of the big number in the statistics and the law of ergodicity in the stochastic processes. It is pointed out that if the incident information were considered more seriously by the pilot and the air controller, the aircraft would not get the worst result.The second, optimal the orientation of the cabin chairs. The protection effect of the bolt and the chair is compared via the calculation of the inertia and impulse when the aircraft got incident. And the effect of the head protection in the chair to the different direction is calculated as well. The result exhibits that the protection ability of the backward chair is 100 times higher, and then the optimization is reached.The third, the voice warning function. It was proposed that automatic warning function should be added to the aircrafts, by supervising the engines status and the abnormal operations, by supervising the tire status and by supervising the obstacle position.The forth, exerting the runway capacity of the velocity. The idea of the exerting the runway potential and expand the capacity of the velocity is proposed after the calculation of the turning radius and the permitting velocity. The quick escaping way should be arranged at the end of the runway in order to allow the higher velocity in the accident, reaching the goal of providing more protection to human body in case of incident, and reduce the damage to the aircraft.