Airplane wing deformation and flight flutter detection method by using three-dimensional speckle image correlation...

Area of Science:

• Aerospace Engineering
• Mechanical Engineering
• Optical Measurement

Background:

• Airplane wing deformation is critical for aerodynamic performance, structural integrity, and fatigue analysis in aircraft manufacturing.
• Detecting wing deformation and flutter is essential for aircraft certification and flight safety.

Purpose of the Study:

• To present a novel real-time detection method for wing deformation and flight flutter detection.
• To improve the accuracy and efficiency of deformation measurement for aircraft wings.

Main Methods:

• Utilized three-dimensional speckle image correlation technology with speckle patterns applied to the aircraft wing.
• Employed CCD cameras for imaging and a matching technique combining Geodetic Systems Incorporated coded points with epipolar constraints to reduce computation.
• Generated a displacement vector map by comparing speckle point coordinates before and after deformation.

Main Results:

• Successfully demonstrated a novel real-time method for detecting wing deformation and flutter.
• Obtained accurate displacement vector maps of the aircraft wing model.
• Verified the accuracy and effectiveness through static and dynamic tests.

Conclusions:

• The proposed 3D speckle image correlation method is accurate and effective for real-time wing deformation and flutter detection.
• This technique offers a valuable tool for aircraft manufacturing, structural design, and certification processes.
• The optimized matching technique enhances computational efficiency for deformation analysis.