Aero-Structural Modeling of the Truss-Braced Wing Aircraft Using Potential Method with Correction Methods for Transonic Viscous Flow and Wing-Strut Interference Aerodynamics

Fugate, Jason ; Nguyen, Nhan T ; Xiong, Juntao

关键词: AERODYNAMIC INTERFERENCE;    AIRCRAFT MODELS;    CORRECTION;    DEFLECTION;    DYNAMIC MODELS;    FINITE ELEMENT METHOD;    FLUTTER ANALYSIS;    NONLINEARITY;    STRUTS;    TRANSONIC FLOW;    TRUSSES;    VISCOUS FLOW;    VORTICES;    WINGS;   

RP-ID  :  ARC-E-DAA-TN69149

学科分类：航空航天科学

美国|英语

来源: NASA Technical Reports Server

【 摘 要 】

This paper describes an aero-structural modeling method for the Transonic Truss-Braced Wing (TTBW) aircraft using VSPAERO. A vortex-lattice model of the TTBW aircraft is developed, and a transonic and viscous flow correction method is implemented in the VSPAERO models to account for transonic and viscous flow effects. A correction method for the wing-strut interference aerodynamics is developed and applied to the VSPAERO solver. Also, a structural dynamic finite-element model of the TTBW aircraft is developed. This finite-element model includes the geometric nonlinear effect due to the tension in the struts which cause a deflection dependent nonlinear stiffness. The VSPAERO models are coupled to the finite-element model to provide a rapid capability for aero-structural modeling and flutter analysis. A flight-optimized jig twist model is being developed and will be applied for the purpose of generating a full flight dynamic model of the TTBW aircraft.