Numerical Study on Influence of Canard on Static Aeroelastic Characteristics of Forward-Swept Wing

摘要

The research on configuration of canard with forward-swept wing is of great significance in modern fighters' design. According to the influence of canard on static aeroelasticity of forward-swept wing, the longitudinal aerodynamic and elastic characteristics of canard with forward-swept wing configuration was calculated based on computational fluid dynamics/computational structural dynamics (CFD/CSD) numerical method, then compared with forward-swept wing configuration. It's resulted that is the critical value, below which the down-wash flow of canard is bad for wing or else good by vortex of canard controlling the separation of wing. The bending and torsion deformation of forward-swept wing is suppressed under the influence of the canard at middle angle of attack, which benefits for improving static aeroelastic stability. The conclusion also can provide references for the design of fighters with forward-swept configuration.