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10/25/2009
On October 25, 2009, Advanced Dynamics Corporation released the Word's first multi-disciplinary, multi-physics, multi-scale and multi-fidelity analysis amd design optimization (4MAO) ...... |
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ASE:
Aeroservoelastic (ASE) module in ASTE-P is designed to perform accurate and fast analysis of aeroservoelastic problems, such as aeroservoelasticity, trim of elastic aircraft, flutter analysis and load analysis of maneuver, ejection and gust response with/without a control system. ASE is based on CFD-ROM of unsteady aerodynamic force and modal based CSD system, as well the FE model. The unsteady aerodynamic force is described by a CFD ROM which is a linear system developed with the POD-ROM or V-ROM of the compressible CFD solver. The input of the ROM is the movement (the displacement or velocity of the aircraft and its control surfaces). And the output is the aerodynamic force. Since it is a linear system and its dimension is much lower than the original nonlinear CFD system, thus the unsteady aerodynamic force is computed in much faster speed than CFD. The CSD system is a modal based linear system, which means that the equation is derived based on structure normal mode decomposition of structure FEM model. Always, only several or dozens of low frequency modes are used. So the dimension of CSD system is much lower than the FEM model. These two linear systems are then assembled together to form an aeroelastic system of an open loop system. Coupled with the mathematic formula of sensors, actuators and control laws, a close loop system can be determined. Based on the systems described above, aeroelasticity/aeroservoelastic analysis, trim of elastic aircraft, flutter analysis and load analysis of maneuver, ejection and gust response can be performed.
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ASE Modeling of a 3D Aircraft Wing |
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