Aerodynamic and aeroelastic amplification in adaptive belt-rib airfoils

摘要: Abstract The belt-rib concept for variable-camber airfoils was developed at DLR (German Aerospace Centre) in the framework of Adaptive Wing project (ADIF). Based on idea exploiting distributed structural flexibility – instead using articulated mechanisms order to produce required large geometry changes, implements a new design philosophy light shape-adaptable structures which basic requirements allowable geometrical high load-carrying capability and low weight are explicitly taken into account. Among several options activation airfoil, use multifunctional materials like piezoceramics or shape memory alloys is very attractive one, particular as consistent solution with solid-state construction principle (virtual absence moveable parts) structure. However, performance (high actuator work, particularly presence aerodynamic loading) not likely be met by available date. A promising consists aeroelastic amplification effects reduce energy system. study such presented this paper, based modal theory airfoil mechanics. Due its formulation, can applied conventional equipped an additional control surface camber adaptation well despite essential differences philosophy. Aerodynamic described means factor, function kinematics load distribution. Quantitative results case ADIF benchmark structure, AIRBUS A340 landing flap. Further, analysed factor introduced properly chosen operators. Some final remarks about role contribution relationship state research perspectives opened exploitation close paper.