Flight Testing of Mission Adaptive Compliant Wing

Optimum Wing Shape of Highly Flexible Morphing Aircraft for Improved Flight Performance

“…Thus, the strain vector of an element is denoted as (2) where ε x is the extensional strain, κ x , κ y , and κ z are the twist of the beam reference line, bending about the local w y axis, and bending about the local w z axis, respectively. The total strain vector of the complete aircraft is obtained by assembling the global strain vector: (3) where ε ei denotes the strain of the ith element. Transverse shear strains are not explicitly included in this equation.…”

“…An effective alternative has been to introduce conformal wing/airfoil shape changes for the aerodynamic load control. FlexSys Inc., with the support from AFRL, developed a compliant trailing edge concept in their Mission Adaptive Compliant Wing (MACW) project [3]. With a piezoelectric actuator driving the compliant morphing mechanism, it was shown in Ref.…”

One Dimensional Morphing Structures for Advanced Aircraft

“…By achieving large deformations in the span dimension over a small section of wing, the wingspan can be altered during flight to optimize aspect ratio for different roles. Furthermore, differential span change between wingtips can generate a roll moment, replacing the use of ailerons on the aircraft (Hetrick et al, 2007). This one dimensional morphing could also be used in the chordwise direction, and is not limited in application to fixed-wing aircraft, as rotorcraft would also benefit from a variable diameter or chord rotor.…”

Development of Variable Camber Morphing Airfoil Using Corrugated Structure

“…), and several morphing structures have been investigated [9][10][11][12][13][14][15][16][17]. Most of the researches are within conceptual studies, numerical simulation without experimental demonstration, development of partial prototype, or demonstration using micro air vehicles.…”