Real-life Ornithopter to Take Flight?
A reader writes "According to this article at space.com, researchers at the University of Toronto have designed and built a working ornithopter. Their design will (hopefully) lift off solely powered by the motion of its articulated wings. First envisaged by Leonardo da Vinci, many will recall ornithopers' prominent role in Frank Herbert's Dune books. The U. Toronto Ornithopter project page is is found at ornithopter.net." "Usul ? , Base of the Pillar"
The article's first paragraph says
Kind of misleading. The Wright brothers' design was based almost exactly on the bird's wing, but in the bird's "gliding" mode (wherein the curved top surface creates faster moving air, which causes lower air pressure above, which effects lift).
The Wrights wisely avoided the complicated "flapping" mode of wings by creating the necessary forward motion using a prop.
Look, up there in the sky. It's a bird ... It's a plane ... No wait ... what the hell is that?!?!?
Ornithopter
Advanced design is relying on nature's model more and more: from "fish scales" that speed up boats, to robotic actuators that limber up synthetic muscles and joints. But the oldest concept of how a machine would fly, based on the action of bird's wings, still hasn't taken flight.
Envisioned first by Leonardo Da Vinci in the 1500's, an "orinthopter's" major design dilemma is getting the up an down motion of the wings to be strong enough for lift off, while not destroying the body of the plane in the process. Modern piloted ornithopters, despite Kevlar and Plexiglas, are thus still on the ground.
But researchers at the University of Toronto's Institute for Aerospace Studies claim their machine will either get off the ground in the next few weeks, or prove that a bird-brained plane is an impossible design challenge.
"It's been a balancing act, challenging the aerodynamics and structural dynamics," said Derek Bilyk, an engineer who came to the project as a graduate student three years ago. " This fall, we will have taken the aircraft to the limits of its performance, but we're pretty sure it's gonna fly; ninety percent sure."
The researchers have reason to be optimistic. The ornithopter did achieve a take-off speed of 55 miles-per-hour last month, powered only by an engine and its bird wings. But the bouncing of the craft was reportedly very uncomfortable for the pilot and may have shaken the plane toward destruction and so the plane was stopped.
Bilyk revealed the landing gear has since gone through a redesign to make it more shock-absorbent, which the eight man team believes will make a viable aircraft, albeit a likely commercial flop.
"I can't think of a good commercial use for it," lamented Bilyk. "But nobody has been successful at it, and yet it the oldest dream of flight."
http://www.ornithopter.net/index.html
Screw the 'thopter. I'd rather have a 300 meter worm.