Metamorphic aerial robot capable of mid-air shape morphing for rapid perching

Area of Science:

• Robotics
• Bio-inspired Engineering
• Aerodynamics

Background:

• Aerial robots require perching capabilities for energy efficiency and stable interaction.
• Current modular designs increase robot size and weight, limiting access to cluttered environments.
• Inspiration from gliding mammals like sugar gliders and sloths offers insights into morphing and energy-efficient perching.

Purpose of the Study:

• To design a compact aerial robot capable of transitioning between flight and perching morphologies.
• To overcome the limitations of modular designs in terms of size, weight, and accessibility.
• To develop an energy-efficient perching mechanism inspired by mammalian locomotion.

Main Methods:

• A quadrotor robot was designed with a bi-stable arm actuated by a single-direction tendon drive.
• The robot transitions morphology by conforming its arm to target structures.
• Perching maneuvers were executed via controlled descent or free-falling drops to mitigate aerodynamic turbulence.

Main Results:

• The robot successfully transitions between flight and perching morphologies.
• The bi-stable arm conforms to target structures within 0.97 seconds.
• A significant mass reduction was achieved through integrated design, enhancing maneuverability.

Conclusions:

• The developed morphing quadrotor robot offers a solution for perching in confined and cluttered environments.
• The bio-inspired design achieves substantial size and weight reduction compared to modular systems.
• This approach enables aerial robots to access previously inaccessible areas with improved energy efficiency.