The aero body righting of frog <i>Rana rugulosus</i> via hindleg swings

Wang, Hong; Lin, Feng; Mo, Jixue; Xiao, Jingcheng; Li, Bing; Li, Yao

doi:10.1002/jez.2642

Cited by 3 publications

(3 citation statements)

References 34 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…First, they extend their hindlimbs laterally and posteriorly, followed quickly by a swing about the body axis, leading to a body counter-rotation before finally retracting their hindlimbs. This entire maneuver happens in about 42 ms and generates enough inertial forces for the frog to rotate its body while conserving angular momentum (Wang et al 2013(Wang et al , 2022. Tree frogs move their limbs next to or above the body and constantly maneuver to maintain position while descending (McCay 2001), utilizing their interdigital webbing to increase drag and descend more efficiently (Wu et al 2022).…”

Section: Frogs and Salamandersmentioning

confidence: 99%

Air-to-land transitions: from wingless animals and plant seeds to shuttlecocks and bio-inspired robots

Ortega-Jimenez,

Jusufi,

Brown

et al. 2023

Bioinspir. Biomim.

View full text Add to dashboard Cite

Recent observations of wingless animals, including jumping nematodes, springtails, insects, and wingless vertebrates like geckos, snakes, and salamanders, have shown that their adaptations and body morphing are essential for rapid self-righting and controlled landing. These skills can reduce the risk of physical damage during collision, minimize recoil during landing, and allow for a quick escape response to minimize predation risk. The size, mass distribution, and speed of an animal determine its self-righting method, with larger animals depending on the conservation of angular momentum and smaller animals primarily using aerodynamic forces. Many animals falling through the air, from nematodes to salamanders, adopt a skydiving posture while descending. Similarly, plant seeds such as dandelions and samaras are able to turn upright in mid-air using aerodynamic forces and produce high decelerations. These aerial capabilities allow for a wide dispersal range, low-impact collisions, and effective landing and settling. Recently, small robots that can right themselves for controlled landings have been designed based on principles of aerial maneuvering in animals. Further research into the effects of unsteady flows on self-righting and landing in small arthropods, particularly those exhibiting explosive catapulting, could reveal how morphological features, flow dynamics, and physical mechanisms contribute to effective mid-air control. More broadly, studying apterygote (wingless insects) landing could also provide insight into the origin of insect flight. These research efforts have the potential to lead to the bio-inspired design of aerial micro-vehicles, sports projectiles, parachutes, and impulsive robots that can land upright in unsteady flow conditions.

show abstract

Section: Frogs and Salamandersmentioning

confidence: 99%

Air-to-land transitions: from wingless animals and plant seeds to shuttlecocks and bio-inspired robots

Ortega-Jimenez,

Jusufi,

Brown

et al. 2023

Bioinspir. Biomim.

View full text Add to dashboard Cite

show abstract

“…Such aerial reorientation can be a passive consequence of aerodynamic drag and body posture, as found during falling for dragonflies ( Fabian et al, 2021 ), pea aphids ( Ribak et al, 2013 ), spiders ( Yanoviak et al, 2015 ) and spotted lanternfly nymphs ( Kane et al, 2021 ), and during jumping for springtails ( Ortega-Jimenez et al, 2022 ), or can involve active body motions [e.g. stick insect nymphs ( Zeng et al, 2017 ), mantises ( Burrows et al, 2015 ), lizards ( Higham et al, 2017 ; Jusufi et al, 2008 ; Siddall et al, 2021 ), frogs ( Wang et al, 2022 ) and squirrels ( Fukushima et al, 2021 )]. We therefore studied whether and how spotted lanternfly nymphs attain different body postures at different phases during jumping, particularly before landing attempts.…”

Section: Introductionmentioning

confidence: 99%

Putting a new spin on insect jumping performance using 3D modeling and computer simulations of spotted lanternfly nymphs

Li,

Xu,

Beery

et al. 2023

Journal of Experimental Biology

View full text Add to dashboard Cite

How animals jump and land on diverse surfaces is ecologically important and relevant to bioinspired robotics. Here we describe the jumping biomechanics of the planthopper Lycorma delicatula (spotted lanternfly), an invasive insect in the US that jumps frequently for dispersal, locomotion, and predator evasion. High-speed video was used to analyze jumping by spotted lanternfly nymphs from take-off to impact on compliant surfaces. These insects used rapid hindleg extensions to achieve high take-off speeds (2.7-3.4 m s−1) and accelerations (800-1000 m s−2), with midair trajectories consistent with ballistic motion without drag forces or steering. Despite rotating rapidly (5-45 Hz) about time-varying axes of rotation, they landed successfully in 58.9% of trials. They also attained the most successful impact orientation significantly more often than predicted by chance, consistent with their using attitude control. Notably, these insects were able to land successfully when impacting surfaces at all angles, pointing to the importance of collisional recovery behaviors. To further understand their rotational dynamics, we created realistic 3D rendered models of spotted lanternflies and used them to compute their mechanical properties during jumping. Computer simulations based on these models and drag torques estimated from fits to tracked data successfully predicted several features of the measured rotational kinematics. This analysis showed that the rotational inertia of spotted lanternfly nymphs is predominantly due to their legs, enabling them to use posture changes as well as drag torque to control their angular velocity, and hence their orientation, thereby facilitating predominately successful landings when jumping.

show abstract

“…The copyright holder for this preprint this version posted June 23, 2023. ; https://doi.org/10.1101/2023.06.20.545794 doi: bioRxiv preprint 4 (Ortega-Jimenez et al, 2022)), or can involve active body motions (e.g., stick insect nymphs (Zeng et al, 2017), mantises (Burrows et al, 2015), lizards (Higham et al, 2017;Jusufi et al, 2008;Siddall et al, 2021), frogs (Wang et al, 2022), and squirrels (Fukushima et al, 2021)). We therefore studied whether and how SLF nymphs attain different body postures at different phases during jumping, particularly before landing attempts.…”

Section: Introductionmentioning

confidence: 99%

Putting a new spin on insect jumping performance using 3D modeling and computer simulations of spotted lanternfly nymphs

Li,

Xu,

Beery

et al. 2023

Preprint

View full text Add to dashboard Cite

How animals jump and land on a variety of surfaces is an ecologically important problem relevant to bioinspired robotics. We investigated this topic in the context of the jumping biomechanics of the planthopper Lycorma delicatula (the spotted lanternfly, SLF), an invasive insect in the US that jumps frequently for dispersal, locomotion, and predator evasion. High-speed video was used to analyze jumping by SLF nymphs from take-off to impact on compliant surfaces. These insects used rapid hindleg extensions to achieve high take-off speeds (2.7-3.4 m/s) and accelerations (800-1000 ms-2), with midair trajectories consistent with zero-drag ballistic motion without steering. Despite rotating rapidly (5-45 Hz) in the air about time-varying axes of rotation, they landed successfully in 58.9% of trials; they also attained the most successful impact orientation significantly more often than predicted by chance, consistent with their using attitude control. Notably, these insects were able to land successfully when impacting surfaces at all angles, pointing to the emerging importance of collisional recovery behaviors. To further understand their rotational dynamics, we created realistic 3D rendered models of SLFs and used them to compute their mechanical properties during jumping. Computer simulations based on these models and drag torques estimated from fits to tracked data successfully predicted several features of their measured rotational kinematics. This analysis showed that SLF nymphs are able to use posture changes and drag torques to control their angular velocity, and hence their orientation, thereby facilitating predominately successful landings when jumping.

show abstract

The aero body righting of frog Rana rugulosus via hindleg swings

Cited by 3 publications

References 34 publications

Air-to-land transitions: from wingless animals and plant seeds to shuttlecocks and bio-inspired robots

Air-to-land transitions: from wingless animals and plant seeds to shuttlecocks and bio-inspired robots

Putting a new spin on insect jumping performance using 3D modeling and computer simulations of spotted lanternfly nymphs

Putting a new spin on insect jumping performance using 3D modeling and computer simulations of spotted lanternfly nymphs

Contact Info

Product

Resources

About