Effect of twist morphing wing segment on aerodynamic performance of UAV

The design space for morphing wings is incredibly broad and allows for a wide range of improvements versus fixed wing aircrafts such that each type of morphing can be useful for different purposes. This work introduces a novel concept for a twist morphing wing segment where only a segment of the wing is actuated which causes a rotation of the tip of the wing while the base segment fixed. The morphing segment consists of a smart soft composite structure made from PDMS and PLA which is actuated by multiple embedded SMA wires. This structure was implemented in a UAV-sized wing and was tested both in still-air conditions and in an open-type wind tunnel to determine the actual impact of this mode of actuation. Results show that this concept can improve the aerodynamic properties of the wing, particularly at low angles of attack.

[1]  Jonathan D. Bartley-Cho,et al.  Development of High-rate, Adaptive Trailing Edge Control Surface for the Smart Wing Phase 2 Wind Tunnel Model , 2004 .

[2]  Inderjit Chopra,et al.  CHARACTERIZATION OF SMA TORSIONAL ACTUATORS FOR ACTIVE TWIST OF TILT ROTOR BLADES , 2002 .

[3]  John Hodgkinson,et al.  Flight Test of the F/A-18 Active Aeroelastic Wing Airplane , 2013 .

[4]  Ramesh Chandra,et al.  Active shape control of composite blades using shape memory actuation , 2001 .

[5]  Michael I. Friswell,et al.  Performance and control optimisations using the adaptive torsion wing , 2012, The Aeronautical Journal (1968).

[6]  Kai Yang,et al.  Design, drive and control of a novel SMA-actuated humanoid flexible gripper , 2008 .

[7]  John L. Junkins,et al.  Design of a morphing wing: Modeling and experiments , 2007 .

[8]  Wade W. Huebsch,et al.  Wind Tunnel Analysis of a Morphing Swept Wing Tailless Aircraft , 2005 .

[9]  Mujahid Abdulrahim,et al.  Investigation of Membrane Actuation for Roll Control of a Micro Air Vehicle , 2007 .

[10]  Sung-Hoon Ahn,et al.  Fabrication of 3D soft morphing structure using shape memory alloy (SMA) wire/polymer skeleton composite , 2013 .

[11]  Daniel J. Inman,et al.  A Review of Morphing Aircraft , 2011 .

[12]  Andres F. Arrieta,et al.  Variable stiffness material and structural concepts for morphing applications , 2013 .

[13]  Toshiro Higuchi.  Next generation actuators leading breakthroughs , 2010 .

[14]  Mujahid Abdulrahim,et al.  ROLL CONTROL FOR A MICRO AIR VEHICLE USING ACTIVE WING MORPHING , 2003 .

[15]  Robert T. Ruggeri,et al.  Wind Tunnel Testing of a Lightweight One-Quarter-Scale Actuator Utilizing Shape Memory Alloy , 2008 .

[16]  P. C. Chen,et al.  Variable Stiffness Spar Approach for Aircraft Maneuver Enhancement Using ASTROS , 2000 .

[17]  Sung-Hoon Ahn,et al.  SMA-based smart soft composite structure capable of multiple modes of actuation , 2015 .

[18]  Kyu-Jin Cho,et al.  Review of biomimetic underwater robots using smart actuators , 2012 .

[19]  Mohsen Shahinpoor,et al.  Design, prototyping and computer simulations of a novel large bending actuator made with a shape memory alloy contractile wire , 1997 .

[20]  P. Degée,et al.  Polylactide (PLA)—a new way of production , 1999 .

[21]  Sung-Hyuk Song,et al.  Smart soft composite: An integrated 3D soft morphing structure using bend-twist coupling of anisotropic materials , 2012 .

[22]  Maenghyo Cho,et al.  A simple smart wing actuator using Ni-Ti SMA , 2010 .

[23]  Sung-Hoon Ahn,et al.  A shape memory alloy–based soft morphing actuator capable of pure twisting motion , 2015 .

[24]  Sung-Hoon Ahn,et al.  A turtle-like swimming robot using a smart soft composite (SSC) structure , 2012 .

[25]  Jamey Jacob,et al.  Design and flight testing of inflatable wings with wing warping , 2005 .

[26]  Sung-Hoon Ahn,et al.  Cross-shaped twisting structure using SMA-based smart soft composite , 2014 .

[27]  M. Friswell,et al.  A review on shape memory alloys with applications to morphing aircraft , 2014 .

[28]  Jonathan E. Cooper,et al.  Development of Smart Spars for Active Aeroelastic Structures , 2003 .

[29]  Tim Smith,et al.  Morphing Inflatable Wing Development for Compact Package Unmanned Aerial Vehicles , 2004 .

[30]  Rosario Pecora,et al.  Effectiveness of Wing Twist Morphing in Roll Control , 2012 .

[31]  Zafer Gürdal,et al.  Mechanism for Warp-Controlled Twist of a Morphing Wing , 2010 .

[32]  Shaker A. Meguid,et al.  Shape morphing of aircraft wing: Status and challenges , 2010 .

[33]  Carol D. Wieseman,et al.  Variable Stiffness Spar Wind-Tunnel Model Development and Testing , 2004 .

[34]  James Scanlan,et al.  Design, analysis and experimental validation of a morphing UAV wing , 2011 .

[35]  Edmund Pendleton,et al.  Active Aeroelastic Wing Flight Research Program: Technical Program and Model Analytical Development , 2000 .