With the rapid improving of modern aircraft system integration

deeply cross-linking between systems

the function of a single system needs the cooperation of multiple systems

which challenges whether the ground test on aircraft can effectively verify the product’s function in aircraft assembly stage. In the face of highly integrated aircraft systems

how to decouple the cross-linking relationship at different levels of aircraft design in manufacturing stage is the key to establish the effective verification of product function in the ground test on aircraft. By referring to the principles and tools of system engineering (SE)

it is established that the internal inheritance relationship between aircraft product design and ground test process design in aircraft assembly stage

which can effectively identify and decouple the internal cross-linking relationship of products. And the cross-linking relationship shows the requirements of hardware-in-the-loop simulation for ground test on aircraft in aircraft assembly stage. Based on these

the general method framework of decoupling “V” model of ground test on aircraft is formed. The initial application of the method showed that the electrical system test simulation requirements are effectively analyzed

and combined with the environment characteristics in aircraft assembly stage

it formed the corresponding test facilities for electrical system.