The traditional evaluation system based on indicators is no longer suitable for the future assessment of intelligent aerial combat systems. To address this issue, this paper proposes a method of conducting adversarial flight tests for intelligent aerial combat systems by simulating opponents with different characteristics using variable stability aircraft. A key focus in this process is to solve the design problem of variable stability control laws within the envelope of aerial combat. This article is based on a dynamic model and Incremental Nonlinear Dynamic Inversion (INDI) method to complete the design of inner-loop variable stability control law. Through Model Predictive Control (MPC), precise trajectory control of variable stability aircraft in aerial combat simulation has been achieved. Automatic control verification of typical aerial combat maneuvers has been completed in a simulated environment, providing technical support for future flight tests of intelligent aerial combat systems.