The direct allocation method for modern tactical aircraft is too complicated to meet the real-time requirements.This paper gives the concept of hypo-attainable moment set (HAMS) and then proposes a new direct control allocation scheme based on HAMS to solving the difficulty of direct allocation method.We prove that the new method in HAMS can get the same result as the direct control allocation method in attainable moment set.But the computational complexity is reduced greatly.Simulation shows that the searching speed is increased by 60%

this verifies the effectiveness of the new method.In addition

this method can also be used for other multi-variable control allocation problem.