Abstract: The consideration of how hard for main manufacture with poor capability to control supplier with strong capability, and leading to the first flight of new aircraft delay. Discussing the collaborative equilibrium strategy of airline on the "main manufacturer-suppliers" model. Focusing on the characteristics of the main manufacture of aircraft with short developing time in China and poor core technical capability of subsystem, but cooperating with the supplier can mostly solve the problem of production, with the result that the supplier's attitude of cooperation will influence the quality and efficiency. In the consideration of the incentive effect of profit distribution and order quantity, and the induction to supplier of incomplete information in the main manufacture's core technical capability, using Cobb-Douglas production function to show the profit of supplier and main manufacture, which leads to the collaborative game model under incomplete information between the main manufacture and supplier.Discussing the equilibrium strategies and existence conditions, making the comparison of them and finding the strategy which makes higher profit. Results show that the profit distribution coefficient and order quantity will influence collaborative strategies, and and main manufacturer uses pooling strategy is strictly better than separating strategy. With the case analysis,we get the optimum strategy of small batch with high profit distribution coefficient and large batch with low coefficient. This paper reveals the suppliers' collaborative attitude motivation issue from the perspectives of main manufacture collaborative strategies, and it has an important guiding significance for the long-term strategic cooperation between the main manufacture and supplier of airliner.

Key words: main manufacturer-suppliers, profit distribution, incomplete information, dynamic gaming, optimal quantity