Submitted by Richard Smith on July 23, 2007 - 19:46
An international gathering of 36 student teams competed in the 2007 AIAA Design-Build-Fly competition. In its 11th year, the popular contest challenges student teams to build an unmanned, remote-controlled airplane to satisfy a series of constraints and flying tasks.
Submitted by Richard Smith on July 11, 2007 - 09:49
Who hasn't wondered at those magical curve balls that we see in sports such as tennis, soccer, baseball and most impressively in ping pong? Or been disappointed by a horrible slice in a game of golf? Of course, there is no magic, these are just examples of aerodynamics in action – the Magnus effect to be precise.
Submitted by Richard Smith on June 25, 2007 - 19:07
The new Scuderi Split-Cycle engine design concept promises increased efficiency and reduced harmful NOx emissions compared to the current generation of internal combustion engines found in most cars. Ironically, this new concept is a variation on the notoriously inefficient and polluting 2-stroke engine.
Submitted by Richard Smith on June 18, 2007 - 16:09
The wind turbine is the poster child for extracting energy from our environment. However, there are numerous other devices that range from the mundane, such as hydroelectric dams, to the downright scary, such as the Atmospheric Vortex Engine which is another word for a controlled (?!) tornado.
Submitted by Richard Smith on June 4, 2007 - 14:05
While clusters of horizontal-axis wind turbines are our primary weapon in the war to reduce greenhouse gas emissions to save the planet from the effects of global warming, there are other interesting wind turbine designs. Vertical-axis wind turbines (VAWT) come in a variety of shapes and sizes for those keen to take the path less travelled.
Submitted by Richard Smith on May 30, 2007 - 20:11
Today the most cost-effective means of capturing wind energy is a horizontal-axis wind turbine positioned on land or at sea in a proven windy area. Whether micro, personal or industrial – modern horizontal-axis wind turbines share the same basic features.
Submitted by Richard Smith on May 22, 2007 - 08:36
Global warming concerns have launched a renewable electricity-generation boom with sleek wind-turbine farms on land and at sea playing a leading role. Yet capturing wind energy using windmills is an ancient science that pre-dates the use of electricity. The invention of the windmill is variously attributed to the Babylonians (circa 1700BC) and the Persians (circa 600-900AD); either way it is still an ancient machine.