[dinosaur] Aerodynamics of Soft Flapping Wings of Caudipteryx

Ben Creisler
[email protected]


A recent paper not yet mentioned:


Yaser Saffar Talori & Jing-Shan Zhao (2019)
Aerodynamics of Soft Flapping Wings of Caudipteryx.
In: Yu H., Liu J., Liu L., Ju Z., Liu Y., Zhou D. (eds) Intelligent
Robotics and Applications. ICIRA 2019. Lecture Notes in Computer Science,
vol 11742. Springer, Cham
DOI: https://urldefense.proofpoint.com/v2/url?u=https-3A__doi.org_10.1007_978-2D3-2D030-2D27535-2D8-5F15&d=DwIBaQ&c=clK7kQUTWtAVEOVIgvi0NU5BOUHhpN0H8p7CSfnc_gI&r=Ry_mO4IFaUmGof_Yl9MyZgecRCKHn5g4z1CYJgFW9SI&m=ORTihe51GQh-DoF4eMoTR9OjN_wDD4mz_gbyAZuTX2E&s=Ch6h8h3lE1w4jxa-u54zIIKaI-i25BQolXSNBkoMmHg&e= 
https://urldefense.proofpoint.com/v2/url?u=https-3A__link.springer.com_chapter_10.1007_978-2D3-2D030-2D27535-2D8-5F15&d=DwIBaQ&c=clK7kQUTWtAVEOVIgvi0NU5BOUHhpN0H8p7CSfnc_gI&r=Ry_mO4IFaUmGof_Yl9MyZgecRCKHn5g4z1CYJgFW9SI&m=ORTihe51GQh-DoF4eMoTR9OjN_wDD4mz_gbyAZuTX2E&s=c7Et-LKbt1yINfZ_4T5L_Iq3wUbtOfCv_HRxbVpDx4Y&e= 


This study explores the aerodynamic capacity of feathered forelimbs of
Caudipteryx, the most basal non-volant maniraptoran dinosaur, with
particular focus on flapping during terrestrial locomotion on a flat,
horizontal substrate. In order to seek this subject, Caudipteryx and its
wings have been modeled theoretically based on measuring the fossil data of
Caudipteryx (IVPP V12344 and IVPP V12430). We divided the wings into
various elements to enhance the analysis accuracy, and lift and thrust
forces were estimated using a mathematical model and metabolic energy
required to flap the forelimbs was estimated. Here we show that flapping
feathered wings of flightless Caudipteryx would generate small amounts of
aerodynamic forces based on our kinematic assumptions. Although the
function of pennaceous feathers in oviraptorosaurs is uncertain and the
feathers of dinosaur were believed not to originate for flight, theoretical
analyses indicate that the feathered wings of Caudipteryx, could have
produced small aerodynamic forces in rapid terrestrial locomotion. The
winged Oviraptorosaurs utilized their feathered wings to produce
aerodynamic forces in cursorial activities. Modeling of flapping while
running showed similar limited aerodynamic force production.


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