Test method for constructing performance surface domain characteristics of variable cycle compressed air system

The invention provides a test method for constructing performance area domain characteristics of a variable-cycle compression system. The test method comprises the following steps: determining a range which is required to be covered by characteristic parameters of a characteristic duct of the variable-cycle compression system in an aerodynamic performance area domain characteristic graph; determining key elements of aerodynamic performance surface domain characteristics of the variable cycle compressed air system to obtain key element characteristic lines; determining a plurality of aerodynamic performance characteristic curves needing to be recorded in the performance state of the tested variable cycle compression system, enabling the collected aerodynamic performance characteristic points to be uniformly distributed in the aerodynamic performance surface domain characteristic graph, and enabling the key element characteristic lines to cover at least a plurality of test collection points; the state of the va