Electrostatic adhesion mitigates aerodynamic losses from gap formations in feathered wings

Area of Science:

• Aeronautical Engineering
• Bio-inspired Design
• Materials Science

Background:

• Birds exhibit remarkable wing morphing for flight maneuverability in diverse environments.
• Engineered avian-inspired wings aim to replicate this capability in small uncrewed aircraft (UAVs).
• Existing engineered designs lack micro-features that prevent feather separation, leading to performance degradation.

Purpose of the Study:

• To investigate electrostatic feather fastening as a mechanism to improve avian-inspired wing morphing.
• To enhance aerodynamic force generation, maneuverability, and efficiency in morphing wings.
• To address performance limitations caused by feather gaps in dynamic airflows.

Main Methods:

• Development of an electrostatic adhesion system for engineered feathers.
• Aerodynamic testing of electrostatically adhered feathered wings under varying flow speeds.
• Comparison of performance metrics (maneuverability, efficiency) against baseline engineered wings.

Main Results:

• Electrostatically adhered feathers improved aerodynamic force generation and wing maneuverability.
• The system effectively prevented feather separation and gap formation.
• Performance showed a preferable relationship with velocity, often matching or exceeding baseline designs at higher speeds.

Conclusions:

• Electrostatic feather fastening offers a viable solution for enhancing the adaptability and performance of avian-inspired morphing wings.
• This technology is crucial for enabling UAVs to operate effectively in complex, dynamic environments at higher speeds.
• The findings advance the development of next-generation UAVs with superior agility and range.