After the state civil aviation transportation corporations of our country are recomposed,several state-holding civil aviation transportation corporations with china airline,southern airline and eastern airline group taking the head,come into existence,and the modern civil aviation transportation corporation system is preliminary founded.

By combining project trajectory real-time optimization of simple guided-bomb with control law,a design method about its controllable trajectory based on genetic algorithm and neural network was presented.

Based on the operation principle of the weapon system with the multiple rounds pre-load in series in controllable firing way, the concepts of quasi-finite-volume combustion, quasi-interior-ballistics process, intensive coupling, weak coupling, non-coupling are proposed.

A discussion on the controlled scrimping strategy in American new product R&D;