Pdf user and programer documentation for the widowac programs is given. Active aeroelastic wing application on a forward swept. The structural model considers nonclassical effects such as transverse shear. The purpose of this paper was to develop a computer program for the preliminary design of wings and empennages at any flight regime for. The method employs complex method and a 3d navierstokes code to determine the optimum. Compared with a wing of rigid hinged aileron, the morphing wing.
Curvilinear fiber optimization tools for aeroelastic. Pdf aeroelastic wing planform design optimization of a. The software has been released to various organizations with applications that include cfdbased aeroelastic analyses and the rapid modeling of highfidelity dynamic stability derivatives. Optimum aeroelastic design method of a resonance type flapping wing for micro air vehicle is presented. This thesis summarizes investigations performed within design, analy. The x53 active aeroelastic wing aaw development program is a completed american research project that was undertaken jointly by the air force research laboratory afrl, boeing. Flight software was then modified for flight testing, and the aircraft first flew in modified form on november 15, 2002. Aeroelastic tailoring method of towsteered composite wing. Aeroelastic analysis of a flexible wing wind tunnel model with variable camber continuous trailing edge flap design nhan nguyen nasa ames research center, moffett field, ca 94035 eric ting. Pete seiler and the performance adaptive aeroelastic wing. Composite material structure optimization design and.
Static aeroelastic analysis is carried out for the beamlike wing model, using a. Aeroelastic tailoring theory, practice, and promise. Aeroelastic design of a joinedwing uav 20090150 aim of this study is the development of an integrated methodology able to support the structural design of an uav. Aeroelastic tailoring of a composite forwardswept wing using a novel hybrid pattern search method journal of aerospace engineering, vol. Different technologies, in addition to the traditional ailerons, have been included in structural design of joinedwing sensorcraft, in order to improve their performance. Quartus specializes in the design and analysis of mechanical systems using computeraided. It gets its speed and accuracy from our novel numerical algorithm that. The aeroelastic tailoring techniquebased radial basis function.
The literature emphasizes the following four tools as the most utilized. Aeroelastic concepts for flexible wing structures 5 dissertation this licentiate thesis is based on a brief introduction to the area of research and the following appended papers. The new features of version 68 include divergence analysis of restrained components or vehicles, and aeroelastic sensitivities of design variables for static aeroelastic characteristics, i. Linear parameter varying control for the x53 active. Multidisciplinary optimization can be used to determine optimal wing design that can achieve a.
Active aeroelastic wing aaw technology represents a new design approach for aircraft wing structures. This design was considered a tremendous increase in the aerodynamic efficiency of the wing, as this particular shape produces the lowest drag coefficient achievable and an improvement in the wings stall response. Design variables the design variables for each of the skin and spar panels are shown in table 1. The combination of cray hardware and ansys software solves these demanding problems efficiently and delivers fast results. Existing structural design methods are strained even further when new technologies. Pdf windowac wing design optimization with aeroelastic. Optimal design of an aeroelastic wing structure with. Useful for analysis and control design of flutter or gustload alleviation, ezase is. Based on the studying results of aeroelastic wing characteristics, the controller should be designed depending on the flight speed. A multidisciplinary design study considering the impact of active aeroelastic wing aaw technology on the structural wing weight of a lightweight fighter concept is presented. Aeroelastic cosimulation flight loads toolkit msc software. Boeing x53 active aeroelastic wing military wiki fandom.
Development of wing structural weight equation for active. This article presents an investigation into the concept and optimal design of a lightweight seamless aeroelastic wing saw structure for small air vehicles. The surface grids for the canard, wing, and tail have been parameterized as shown in fig. In this paper, some major aeroelastic considerations in aircraft. An approach to induced drag reduction with experimental evaluation. Nasas unsteady aerodynamic and aeroelastic reduced. A framework for adaptive aeroelastic wing shaping control nhan nguyen, ph. A flight research program for active aeroelastic wing.
Aeroelastic wing planform design optimization of a. The aerodynamics toolkit is a compilation of lite versions of our most popular. Further, an active aeroelastic wing can be used to reduce induced drag at low wing strain conditions and, at higher strain conditions, reduce maneuver air loads. Active aeroelastic wing control laws were developed to flex the wing, and flight instrumentation was used to accurately measure the aeroelastic performance of the wing planform. Friswell3 university of bristol, bristol bs8 1tr, uk an approach to design an aircraft wing with. As the wingbox is divided into five rib bays and each of the rib bays consists of four panels with seven design variables, the total number of design variables is 140. Active aeroelastic wing is introduced to benefit the forward swept wing fsw. The aeroelastic analysis of the wing plate is completed using the mscnastran software.
International workshop on robust modeling, design and analysis. Zaero, integrates all essential disciplines required for advanced industrial aeroelastic design and analysis. The msc nastran aeroelasticity capability has seen significant enhancements and additions over the last 10 years. Widowac may be used for the design of minimum mass wing structures. Aeroelastic concepts for flexible wing structures 3 abstract this thesis summarizes investigations performed within design, analysis and experimental evaluation of exible aircraft structures. Pdf aeroelastic modelling of morphing aircraft wings. This design was considered a tremendous increase in the. Zaero is a professional software engineering tool that can efficiently solve your most demanding industrial aeroelastic and aeroservoelastic problems.
Active aeroelastic wing technology is a design approach that enables a higher aspect ratio, more aerodynamically efficient wing. Boeing x53 active aeroelastic wing wikimili, the free. Aeroelastic cosimulation flight loads toolkit by martijn renooij, stirling dynamics, uk a part of the expleo group of companies, stirling dynamics is a fastgrowing, advanced engineering company that. Quartus engineering incorporated was founded in 1997 to provide quality advanced engineering services. In addition to trim analysis, sometimes it is necessary. Aeroelastic twolevel optimization for preliminary design of wing. Some examples include updates to monitor points and splines.
Using an aeroelastic analysis tool allowed for all. A framework for the aeroelastic analysis and design of generic morphing wings. A flight research program for active aeroelastic wing technology. The x53 active aeroelastic wing aaw development program is a completed american. Aeroelastic optimization design for highaspectratio. Synthesis tools for aeroelastic tailoring have been developed to varying degrees of modeling fidelity. With nx nastrans aeroelasticity solution, these points can easily and accurately be solved for, whether on a wing or an entire aircraft. Aeroelastic definition of aeroelastic by the free dictionary. The x53 a summary of the active aeroelastic wing flight research. A framework for adaptive aeroelastic wing shaping control. The x53 active aeroelastic wing aaw development program is a completed research project that was undertaken jointly by the air force research laboratory afrl, boeing phantom. Aeroelastic concepts in civil aircraft wings design.
Therefore, aeroelastic optimization design is a necessary way to increase design efficiency in every phase of aircraft design. Aeroelasticity in general considers inertial, elastic and aerodynamic forces acting on a structure. This is the most unique and challenging aspect of the xhale concept as it. The x53 active aeroelastic wing aaw development program is a completed american research project that was undertaken jointly by the air force research laboratory afrl, boeing phantom works and. Optimization design of aircraft structures subjected to aeroelastic constraints is not. In comparison to the conventional wing design the torsional stiffness is. In traditional aircraft design, control surfaces are generally regarded as.
Optimized offdesign performance of flexible wings with. The nx nastran aeroelasticity software solution enables you to analyze models in which structures are immersed in fluid flows, which as a result effect the stiffness of the structure itself. Nonlinear aeroelastic modeling and analysis of fully. Aeroelastic analysis of a flexible wing wind tunnel model. The aeroelastic design of composite wings modeled as thinwalled beams is investigated through the use of curvilinear fiber. Nx nastran aeroelasticity nx nastran sol 144 overview. Msa3dfoil is used for the aerodynamics conceptualpreliminary design and subsequent analysis of a flying wing uav. In 1984 a very peculiar aircraft flew for the first time. Consequently, a static aeroelastic analysis method7 was used in this work to compute aerodynamic performance.
The nonlinear aeroelastic analysis, as a key part in optimization design, is integrated into the whole optimization process to obtain the static equilibrium configuration and flutter speed. Use of msc nastran for aeroelastic analysis youtube. The programs are applicable to studies of steady state aeroelastic effects on stability characteristics of airplanes, but results are limited in validity to wings of typical fighter airplanes with a. The technology uses static aeroelastic deformations as a net benefit during maneuvering. Its wings were swept forward, contrarily to common airplanes. Both the bleriot xi and the british bristol prier shown in figure 1. Aeroelastic optimization design for highaspectratio wings with. Aeroelastic scaling for rotarywing aircraft with applications. Flutter is a dynamic aeroelastic instability characterized by sustained oscillation of structure arising from interaction between those. Preliminary conceptual aeroelastic design asee peer. A new twopronged approach for developing refined aeroelastic scaling laws for rotarywing aeroelastic and aeroservoelastic applications is presented.