The hummingbird is named after the humming sound it makes when it hovers in front of flowers to feed. But only now has it become clear how the wing generates the hummingbird's namesake sound when it is beating rapidly at ...
Plants & Animals
Mar 16, 2021
0
1623
The added weight, electricity demand and aerodynamic drag of the sensors and computers used in autonomous vehicles are significant contributors to their lifetime energy use and greenhouse gas emissions, according to a new ...
Environment
Feb 15, 2018
0
45
It was a staggering feat, a car that went faster than the speed of sound. On October 15 1997, Andy Green travelled across the Black Rock Desert, Nevada, in the Thrust SSC at 763.035 mph, or Mach 1.02. Two decades on, that ...
Hi Tech & Innovation
Jul 22, 2016
22
544
The maneuvers of flying insects are unmatched by even the best pilots, and this might be due to the fact that these critters don't obey the same aerodynamic laws as airplanes, a team of New York University researchers has ...
General Physics
Jul 11, 2016
7
49
Compared to birds and insects, bats have heavy wings for their body size. Those comparatively cumbersome flappers might seem a detriment to maneuverability, but new research shows that bats' extra wing mass makes possible ...
Plants & Animals
Nov 16, 2015
0
80
A new instrument may help to carry out tests to optimize miniature drones, in attempts to assess their flight performance more precisely. A team from Stanford University have shown how flapping wings enable flying animals ...
Australian bats developed a high-speed flying technology some 50 million years before aircraft engineers, according to Department of Parks and Wildlife zoologist Norm McKenzie.
Plants & Animals
Aug 13, 2014
2
0
Many owl species have developed specialized plumage to effectively eliminate the aerodynamic noise from their wings – allowing them to hunt and capture their prey in silence.
General Physics
Nov 24, 2013
1
1
A study into the aerodynamic performance of feathered dinosaurs, by scientists from the University of Southampton, has provided new insight into the evolution of bird flight.
Archaeology
Sep 18, 2013
0
0
A new computational scheme enables more stable simulations of shockwaves in fluids and may be scalable for large engineering designs.
Engineering
Jul 17, 2013
0
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