Reliability-based aeroelastic design of composite plate wings using a stability margin

Aeroelastic Analysis of Composite Wings

An aeroelastic stability analysis is presented for high-aspect ratio composite wings. The structural model is based on an asymptotically correct crosssectional formulation and a nonlinear geometric exact beam analysis, both derivable from 3-D elasticity. A new 2-D unsteady inflow finite-state theory is considered for the aerodynamic part of the solution. Theodorsen theory is also implemented an...

Robust Aeroelastic Control of Very Flexible Wings using Intrinsic Models

This paper explores the robust control of large flexible wings when their dynamics are written in terms of intrinsic variables, that is, velocities and stress resultants. Assuming 2-D strip theory for the aerodynamics, the resulting nonlinear aeroelastic equations of motion are written in modal coordinates. It is seen that a system which experiences large displacements can nonetheless be accura...

Loading Estimation of Flapping Wings under Aeroelastic Effect Using Finite Element Method

The aim of this paper is to provide an aeroelastic computational tool which determines the induced wing loads during flapping flight. For this purpose, a Finite Element (FE) code based on a four-node plate bending element formulation is developed to simulate the aeroelastic behavior of flapping wings in low incompressible flow. A quasi-steady aerodynamic model is incorporated into the aeroelast...

Stability, Dynamic and Aeroelastic Optimization of Functionally Graded Composite Structures

Reliability-Based Design Optimization of a Composite Airframe Component