Aerodynamics Archives – The Green Optimistic green tech news, since 2008 Thu, 28 Sep 2017 14:48:12 +0000 en-US hourly 1 https://wordpress.org/?v=7.0 2667534 Owl Feathers Provide Inspiration to Build More Efficient Aircraft and Wind Turbines https://www.greenoptimistic.com/owl-feathers-aircraft-wind-turbines-20170928/ https://www.greenoptimistic.com/owl-feathers-aircraft-wind-turbines-20170928/#respond Thu, 28 Sep 2017 13:54:27 +0000 https://www.greenoptimistic.com/?p=64507 Airfoils are two-dimensional structures that describe an aviation wing or a propeller from a turbine or windmill. Their design faces challenges on reducing noise during operation while optimizing its aerodynamic performance. Owls are known to hunt their preys without noticeable sound, and this feature of their flight has inspired researchers to study and mimic their […]

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]]> https://www.greenoptimistic.com/owl-feathers-aircraft-wind-turbines-20170928/feed/ 0 64507 Tesla Motors Pushing for Side-View Mirror Elimination https://www.greenoptimistic.com/tesla-motors-pushing-side-view-mirror-elimination-20140402/ https://www.greenoptimistic.com/tesla-motors-pushing-side-view-mirror-elimination-20140402/#respond Wed, 02 Apr 2014 20:34:29 +0000 https://www.greenoptimistic.com/?p=46802 Aerodynamics play a big role in fuel economy and, in electric vehicles like those built by Tesla Motors, range, which is why side-view mirrors are such a drag, literally. By law, every vehicle in the US needs to have these side-view mirrors, but at every car show, we see a concept car without side mirrors, […]

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]]> https://www.greenoptimistic.com/tesla-motors-pushing-side-view-mirror-elimination-20140402/feed/ 0 46802 Sim-Drive SIM-CEL Electric Vehicle Prototype is Remarkably Efficient https://www.greenoptimistic.com/sim-drive-sim-cel-electric-vehicle-prototype-is-remarkably-efficient-20130405/ https://www.greenoptimistic.com/sim-drive-sim-cel-electric-vehicle-prototype-is-remarkably-efficient-20130405/#respond Fri, 05 Apr 2013 15:55:38 +0000 https://www.greenoptimistic.com/?p=35778 Sim-Drive, an electric vehicle company in Japan, continues to mess with prototypes that are ever more impressive, such as the latest, the SIM-CEL [Cool Energy Link]. Compared to its other prototypes, such as the high-traction eight-wheel Sim-Drive Eliica, the SIM-CEL might seem like a step backwards, but take a closer look and you’ll see why […]

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]]> https://www.greenoptimistic.com/sim-drive-sim-cel-electric-vehicle-prototype-is-remarkably-efficient-20130405/feed/ 0 35778 Helix-Shaped Vertical Wind Turbines Will Power GSM Towers in Africa & US https://www.greenoptimistic.com/helix-shaped-vertical-wind-turbines-will-power-gsm-towers-in-africa-us-20091001/ https://www.greenoptimistic.com/helix-shaped-vertical-wind-turbines-will-power-gsm-towers-in-africa-us-20091001/#respond Thu, 01 Oct 2009 18:36:53 +0000 https://www.greenoptimistic.com/?p=4608 Too often, regardless of the energy sources being used, the GSM transmission towers' power fails, because of various reasons: theft, heavy rain/snow, disturbances in the grid lines. Helix, a San Diego-based wind company, is working on a wind turbine that is designed to power base stations in hard to reach, remote locations from Africa and the US.

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