Aeroelastic Tailoring of a Civil Tiltrotor Configuration
نویسندگان
چکیده
Progress in establishing an analysis package and design/optimization framework for preliminary design of a civil tiltrotor aircraft is reported. Updates to the sizing/performance program VASCOMP and Equivalent LAminated Plate Solution ELAPS are described. Correlation of this updated ELAPS (now including shear panels) and a state-space unsteady aerodynamic analysis, PWAKE, with reference results from the Automated STRuctural Optimization System, ASTROS, is shown. A generic UNIXbased, flexible executive system for multidisciplinary design/ optimization tasks is presented. The framework features a central data base, provisions for parallel analysis execution on different host computers connected to the same file server, local sensitivity calculation using finite differencing, global sensitivity calculation using the Global Sensitivity Equation (GSE), and a utility allowing different levels of user control. A simple sample case demonstrates proper framework operation and practical advantages in accuracy in the GSE approach versus global finite differencing.
منابع مشابه
Multi-Body Analysis of a Tiltrotor Con guration
The paper describes the aeroelastic analysis of a tiltrotor con guration. The 1/5 scale wind tunnel semispan model of the V-22 tiltrotor aircraft is considered. The analysis is performed by means of a multi-body code, based on an original formulation. The di erential equilibrium problem is stated in terms of rst order di erential equations. The equilibrium equations of every rigid body are writ...
متن کاملAeroelastic Tailoring of the NASA Common Research Model via Novel Material and Structural Configurations
This work explores the use of tow steered composite laminates, functionally graded metals (FGM), thickness distributions, and curvilinear rib/spar/stringer topologies for aeroelastic tailoring. Parameterized models of the Common Research Model (CRM) wing box have been developed for passive aeroelastic tailoring trade studies. Metrics of interest include the wing weight, the onset of dynamic flu...
متن کاملAn Approach to Tiltrotor Wing Aeroservoelastic Optimization through Increased Productivity
The paper describes one way to approach the multidisciplinary task of optimizing a tiltrotor wing structure which is equipped with an active flutter suppression system. Objective function is a productivity index, as a measure for aircraft cost-effectiveness. Short digress is held on the characteristics of the tiltrotor's dynamic system and its aeroelastic behavior. Contributing analyses (CA's) ...
متن کاملMulti-body Analysis of the 1/5 Scale Wind Tunnel Model of the V-22 Tiltrotor
The paper presents a multi-body analysis of the 1/5 scale wind tunnel model of the V{22 tiltrotor, the Wing and Rotor Aeroelastic Testing System (WRATS), currently tested at NASA Langley Research Center. An original multibody formulation has been developed at the Dipartimento di Ingegneria Aerospaziale of the Politecnico di Milano, Italy. It is based on the direct writing of the equilibrium equ...
متن کامل