News tagged with rotor speed
Tilting at wind farms
Jan 07, 2009 |
4.9 / 5 (10) |
4
A way to make wind power smoother and more efficient that exploits the inertia of a wind turbine rotor could help solve the problem of wind speed variation, according to research published in the International Journal of ...
Search results for rotor speed
As shuttle's career nears an end, NASA turns focus to satellites
Space & Earth / Space Exploration
16 hours ago |
4.3 / 5 (7) |
0
NASA heads into 2010 with the bittersweet assignment of retiring the space shuttle after nearly three decades. But that's not all the agency has planned: There are also launches of three new satellites aimed at better understanding ...
New tool in the fight against mosquito-borne disease: A microbial 'mosquito net'
Dec 24, 2009 |
4.8 / 5 (4) |
0
Earlier this year, researchers showed that they could cut the lives of disease-carrying mosquitoes in half by infecting them with a bacterium they took from fruit flies. Now, a new report in the December 24th issue of Cell, ...
Ladder-walking locusts show big brains aren't always best
Dec 24, 2009 |
5 / 5 (6) |
1
Scientists have shown for the first time that insects, like mammals, use vision rather than touch to find footholds. They made the discovery thanks to high-speed video cameras - technology the BBC uses to ...
Follow Santa Claus, courtesy Google and NORAD
Dec 24, 2009 |
2.7 / 5 (7) |
1
Santa Claus is coming to your town -- and NORAD is tracking him as he drops off presents around the world. The North American Aerospace Defense Command, which monitors the North American airspace, on Thursday ...
New materials designed to deal with hypersonic and supersonic hot stuff (w/ Video)
Dec 24, 2009 |
4.2 / 5 (12) |
6
University of Queensland researchers are testing new materials to withstand the extreme heat experienced by hypersonic vehicles in flight so they can fly for substantially longer.
Scientists map speed of climate change
Dec 23, 2009 |
2.8 / 5 (28) |
26
New study finds that the average ecosystem will need to shift about a quarter mile per year to keep pace with global climate change.
Bees show off the perfect landing
Dec 23, 2009 |
4.5 / 5 (8) |
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(PhysOrg.com) -- Honey bees undergo a sudden transition from speeding aircraft to hovering helicopter as they perform the delicate art of landing on a flower.
First adhere, then detach and glide forward
Dec 23, 2009 |
5 / 5 (1) |
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How do one-celled parasites move from the salivary gland of a mosquito through a person's skin into red blood cells? What molecular mechanisms form the basis for this very important movement of the protozoa? ...
Researchers reveal secrets of duck sex: It's all screwed up
Dec 23, 2009 |
3.9 / 5 (11) |
0
Female ducks have evolved an intriguing way to avoid becoming impregnated by undesirable but aggressive males endowed with large corkscrew-shaped penises: vaginas with clockwise spirals that thwart oppositely ...
Seeing how evolutionary mechanisms yield biological diversity
Dec 22, 2009 |
not rated yet |
0
An international team of scientists has discovered how changes in both gene expression and gene sequence led to the diversity of visual systems in African cichlid fish.
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