Results 31 to 40 of about 455,243 (146)

Theoretical modelling of impact performance and parameter sensitivity analysis of folding wing

Acta Scientiarum: Technology
Reliable deployment and locking are critical for folding wings used in high-speed aircraft. However, the high-intensity impact occurring during deployment poses a significant challenge to the locking accuracy. This paper presents a theoretical model for
Haizhong Huang, Chenglong Zhang, Guozhu Wang, Ganlin Cheng, Shunbo Yang   +4 more
doaj   +1 more source

Research on the motion characteristics of the opening process of double joint folding wings

AIP Advances
The folding wing mechanism is a system developed for the miniaturization of missile wings to facilitate box (cylinder) storage, transportation, and launching, saving the storage and transportation space of the missile and improving the combat capability ...
Tiegang Lv, Xiaowen Zhang, Qiao Junfu
doaj   +1 more source

Dermaptera hindwing structure and folding: New evidence for familial, ordinal and superordinal relationships within Neoptera (Insecta)

European Journal of Entomology, 2001
The Dermaptera are a small order of insects, marked by reduced forewings, hindwings with a unique and complicated folding pattern, and by pincer-like cerci. Hindwing characters of 25 extant dermapteran species are documented.
Fabian HAAS, Jarmila KUKALOVÁ-PECK
doaj   +1 more source

Theoretical research on dynamic modeling of rigid–flexible coupling system with double joint folded wing

AIP Advances
For meeting the requirements of tactical missiles seeking miniaturized launch devices for storage, transportation, and launch, a tube-launched missile wing is adopted, which folds before launch and quickly unfolds after launch.
Tiegang Lv, Zhang Xiaowen, Qiao Junfu, Zhang Yu, Li Yongwei, Yao Fei, Yang Kai, Shi Jianwei   +7 more
doaj   +1 more source

Effect of Inboard and Outboard Folding Angles on Aeroelastic Characteristics of a Folding Wing

, 2012
Morphing aircrafts such as folding wing can fly efficiently at varying flight conditions and therefore they have the potential to replace existing fixed wing aircrafts.
Lee, In, Shrestha, Pratik, Kim, Eun-Ho, Jeong, Min-Soo, Bae, Jae-Sung   +4 more
core   +1 more source

Folding wings like a cockroach: a review of transverse wing folding ensign wasps (Hymenoptera: Evaniidae: Afrevania and Trissevania).

PLoS ONE, 2014
We revise two relatively rare ensign wasp genera, whose species are restricted to Sub-Saharan Africa: Afrevania and Trissevania. Afrevania longipetiolata sp. nov., Trissevania heatherae sp. nov., T. hugoi sp. nov., T. mrimaensis sp. nov. and T.
István Mikó, Robert S Copeland, James P Balhoff, Matthew J Yoder, Andrew R Deans   +4 more
doaj   +1 more source

Research on the Nonlinear Structural Dynamic Characteristics of the Rigid Flexible Coupling Folding Wing Model for Aircraft

Engineered Science
During the working process of the folding wing, there is not only a large-range rigid body motion but also a deformation motion of the flexible components. The problem of the rigid-flexible coupling of the structure is extremely complex.
Xinqiang Lu, Rui Yang, Shiyong Sun
doaj   +1 more source

MODEL INVESTIGATION OF WATER LANDINGS OF A WINGED REENTRY CONFIGURATION HAVING OUTBOARD FOLDING WING PANELS [PDF]

, 1959
Water landings of winged reentry configuration having outboard folding wing panels - models ...
Petynia, W. W.
core  

Robotic Avian Wing Explains Aerodynamic Advantages of Wing Folding and Stroke Tilting in Flapping Flight

Advanced Intelligent Systems, 2023
Avian flapping strategies have the potential to revolutionize future drones as they may considerably improve agility, increase slow speed flight capability, and extend the aerodynamic performance. The study of live birds is time‐consuming, laborious, and,
Enrico Ajanic, Adrien Paolini, Charles Coster, Dario Floreano, Christoffer Johansson   +4 more
doaj   +1 more source

Asymmetrical colour and wing-folding in Tithrone roseipennis (Saussure 1870) a neotropical praying mantis (Mantodea Hymenopodidae)

, 1999
The frequency and type of forewing colour asymmetry present in Tithrone roseipennis (Saussure 1870) (Mantodea Hymenopodidae) was examined and 29 out of 35 specimens had red/green forewing colour asymmetry.
Hancock, E.G., Barabás, S.P.
core   +1 more source