Nicole Sharp

Flying Without a Rudder

Aircraft typically use a vertical tail to keep the craft from rolling or yawing. Birds, on the other hand, maneuver their wings and tail feathers to counter unwanted motions. Researchers found that the list of necessary adjustments is quite small: just 4 for the tail and 2 for the wings. Implementing those 6 controllable degrees of freedom on their bird-inspired PigeonBot II allowed the biorobot to fly steadily, even in turbulent conditions, without a rudder. Adapting such flight control to the less flexible surfaces of a typical aircraft will take time and creativity, but the savings in mass and drag could be worth it. (Image credit: E. Chang/Lentink Lab; research credit: E. Chang et al.; via Physics Today)

#biology #biorobotics #birdFlight #birds #flightControl #fluidDynamics #physics #science #turbulence

Stella Angelika Ludwig

@meltedcheese Thank you!

That's an interesting question.

For my research I'll be quantifying the hydrodynamic properties and locomotor #biomechanics of #Spinosaurus using a digital musculoskeletal model, predictive simulations, and then eventually #biorobotics informed by this data.

I'm not sure if the bones of #dinosaurs have made it into any practical applications yet, but there are studies on how #pterosaur bones can inform material design!

theengineer.co.uk/content/news

Fossilised Pterosaur bones offer insights into new materials - The Engineer

The microarchitecture of fossil pterosaur bones could…

The Engineer
Nicole Sharp

Swimming Like a Ray

Manta rays are amazing and efficient swimmers — a necessity for any large animal that survives on tiny plankton. Researchers have built a new soft robot inspired by swimming mantas. Like its biological inspiration, the robot flaps its pectoral fins much as bird flaps its wings; this motion creates vortices that push water behind the robot, propelling it forward. For a downstroke, air inflates the robot’s body cavity, pushing the fins downward. When that air is released, its fins snap back up. With this simple and energy efficient stroke, researchers are able to control the robot’s swimming speed and depth, allowing it to maneuver around obstacles. Flapping faster helps the robot surface, and slower flapping allows it to sink. (Living manta rays also sink if they slow down.) Check out the robot in action below. (Image credit: J. Lanoy; video and research credit: H. Qing et al.; via Ars Technica)

https://www.youtube.com/watch?v=pXB9Ip7qa0o

#biology #biophysics #biorobotics #flapping #fluidDynamics #mantaRay #physics #science #swimming

dtpolet

Demos nearly ready for my poster presentation at #SICB2023 ! Come to P2-227 tomorrow (Thursday) 430-530 PM to play with these #ComparativeBiomechanics #dynamics #biorobotics