Results 81 to 90 of about 205,543 (241)

Review for "Flight hampers the evolution of weapons in birds"

, 2021

openalex   +1 more source

Landing together: how flocks arrive at a coherent action in time and space in the presence of perturbations

, 2012
Collective motion is abundant in nature, producing a vast amount of phenomena which have been studied in recent years, including the landing of flocks of birds.
Aoki, B. Ferdinandy, Ballerini, Bhattacharya, Castellano, Chamley, Conradt, Conradt, Couzin, D. Ábel, Daruka, Detrain, Gammaitoni, Garnier, Gautrais, Grégoire, Halley, Helbing, K. Bhattacharya, Meunier, Michard, Ramseyer, Sirot, T. Vicsek, Van der Broeck, Vicsek, Visscher, Ward   +27 more
core   +1 more source

Large Birds of Prey, Policies That Alter Food Availability and Air Traffic: a Risky Mix for Human Safety

Human-Wildlife Interactions, 2017
Raptors are considered to pose one of the greatest aviation bird strike risk. We investigated raptor bird strikes reported at the largest Spanish airport (Adolfo Suárez Madrid Barajas; AS-MB) from 2009 to 2016 to determine the factors contributing to the
Rubén Moreno-Opo, Antoni Margalida
doaj   +1 more source

Man-rated flight software for the F-8 DFBW program [PDF]

The design, implementation, and verification of the flight control software used in the F-8 DFBW program are discussed. Since the DFBW utilizes an Apollo computer and hardware, the procedures, controls, and basic management techniques employed are based ...
Bairnsfather, R. R.
core   +1 more source

Reinterpretation of purported molting evidence in the Thermopolis Archaeopteryx

Communications Biology, 2021
Yosef Kiat, Peter Pyle, Amir Balaban, Jingmai K. O’Connor   +3 more
doaj   +1 more source

Finite element modeling of wing bird strike [PDF]

FME Transactions, 2015
Bird strike events are a potential dangerous problem faced by flight safety nowadays. These events are usually simulated through numerical approaches due mainly to the technical difficulties and high costs associated with experimental tests.
Ugrčić Marinko, Maksimović Stevan M., Stamenković Dragi P., Maksimović Katarina S., Nabil Khettou   +4 more
doaj  

Biological and aerodynamic problems with the flight of animals [PDF]

Biological and aerodynamic considerations related to birds and insects are discussed. A wide field is open for comparative biological, physiological, and aerodynamic investigations.
Holst, E. V., Kuchemann, D.
core   +1 more source

Advanced flight control system study [PDF]

A fly by wire flight control system architecture designed for high reliability includes spare sensor and computer elements to permit safe dispatch with failed elements, thereby reducing unscheduled maintenance. A methodology capable of demonstrating that
Hartmann, G. L., Lee, H. P., Ng, W. K., Rang, E. R., Schulte, R. W., Wall, J. E., Jr.   +5 more
core   +1 more source

Electromagnetic scattering characteristics of flapping bird and experimental validation

The Journal of Engineering, 2019
Bird flight has caused many scientists' interest for a long time, of which the flapping is the most common locomotion. Radar provides a powerful tool to observe birds' migration.
Cheng Hu, Tianjiao Lang, Rui Wang, Changjiang Liu   +3 more
doaj   +1 more source

Social interactions dominate speed control in driving natural flocks toward criticality

, 2013
Flocks of birds exhibit a remarkable degree of coordination and collective response. It is not just that thousands of individuals fly, on average, in the same direction and at the same speed, but that even the fluctuations around the mean velocity are ...
Bialek, William, Cavagna, Andrea, Giardina, Irene, Mora, Thierry, Pohl, Oliver, Silvestri, Edmondo, Viale, Massimiliano, Walczak, Aleksandra   +7 more
core   +1 more source