Showing posts with label University of Maryland. Show all posts
Showing posts with label University of Maryland. Show all posts

Saturday, July 23, 2011

Cyclocopter Aircraft: Another way to hover and fly.

The human dream of flying has a long history, the aircraft designs we see today are the outcome of all the sacrifice and hardwork of a long list of inventors. On the contrary some designs never made it in the real world because of their complexities and lack of resources. One such aircraft design is the Cyclocopter also called a Cyclogyro. The original idea is know to be almost a century old. Basically, a cyclocopter is similar to a helicopter, it creates lift by means of rapidly moving airfoils. But unlike a helicopter, a cyclocopter's airfoils rotate about a horizontal axis, they continually changing their pitch in order to generate thrust in one single direction.


The idea is not as simple as it sounds and that's the reason no aircraft based on this system made it into real world applications. But that might change for good, a team of researchers at the University of Maryland from the Department of Aerospace Engineering have been working on this concept since 2008. It is a radically alternate concept to conventional helicopters. It can revolutionize vertical flight especially in the field of robotic Micro Air Vehicles (MAVs) which have a wide range of military and civilian applications.

Saturday, January 29, 2011

Robotic Samara: Single winged helicopter

Nature has always been a great inspiration when it comes to designing and developing new mechanical devices.  With the advent of the UAV age, flying machines are getting smaller in size. When it comes to hovering UAVs like mini-scaled helicopters the problem with them is the smaller they get the less efficient they become. So to solve this problem Evan Ulrich and colleagues at the University of Maryland in College Park turned to the biological world for inspiration. Many trees disperse their seeds by releasing those single-winged seeds that are also called "Samara". Evan Ulrich and colleagues built a mechanical Samara also know as Ulrich flyer whose dynamics are very similar to those of nature's Samaras.

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