Human Powered Aircraft

Todd Reichert has achieved what's believed to be an aviation first. The University of Toronto PhD candidate built a human-powered aircraft with flapping wings which he hopes has set a world record.

Leonardo da Vinci, of Florence, dreamt of doing it. Todd Reichert, of the University of Toronto, actually did.

On Wednesday, Reichert, a PhD student at the U of T Institute for Aerospace Studies, announced he had completed the first continuous flight of a human-powered aircraft with birdlike flapping wings, a device known as an ornithopter.

The creation of a craft that would allow humans to fly like birds has captured the imagination of inventors for centuries, but few working models have been built. Da Vinci drew up sketches for a flying machine in 1485, but never made one.

“Some people just dream about flying, at night in their dreams. I do,” said David Greatrix, a professor of aerospace engineering at Ryerson University. “Even though we have flying airplanes, it’s not the same.”

Reichert’s ornithopter flight, which lasted 19.3 seconds and covered 145 metres, is the first entirely powered by a human being. “This is the last first in aviation, and in many ways the most significant one,” said James DeLaurier, who oversaw the project.

“It was unreal,” Reichert, 28, said in an interview.

The flying craft, named the Snowbird, weighs just under 43 kilograms and has a wing span of 32 metres, comparable to a Boeing 737, though its weight amounts to approximately that of the pillows onboard a commercial jet. The Snowbird is made of carbon fibre, foam and balsa wood.

It took Reichert and another graduate student, Cameron Robertson, over four years to make the craft, and cost $200,000.

DeLaurier, a retired Institute for Aerospace Studies professor who is one of the world’s leading experts on ornithopters, devoted his career to birdlike flight. In 2006, he built and flew a motorized ornithopter called the Flapper, another aviation first. But a purely human-powered craft was his life’s ambition.

“(Reichert’s) ornithopter has since landed, but I’m still hovering a couple feet off the ground. It was a moment that’s difficult to describe,” DeLaurier said.

Over the summer, Reichert lost eight kilograms, went on a special diet and trained daily, especially his leg muscles.

He took 65 test runs before the Aug. 2 flight date in Tottenham, Ont. “I didn’t sleep the night before the flight,” Reichert said. “My mind was just racing.”

A representative from the Fédération Aéronautique Internationale, the world body governing aeronautical records, was present to witness the event.

A tow line tugged the craft into the air and then released it, and the Snowbird was off to its history-making flight. “It was such a neat feeling . . . you kept pushing and it kept maintaining altitude,” Reichert said. “All of a sudden, it clicked and we were able to stay up there.”

The Snowbird works by pumping a set of pedals attached to pulleys and lines that bring down the wings in an elegant flapping motion, a feat that requires both engineering and physical prowess.

“He combined brilliance with athleticism,” DeLaurier said. Part of the team’s goal was to promote sustainable and efficient transportation.

Greatrix said he was impressed with the team. “I’ll give them full marks for persistence. It’s all very promising from an aerospace engineering viewpoint,” he said.

Reichert’s mother, Majel Vye, was thrilled. “This is awesome, he worked so so hard for this,” she said.

The team is in talks with the Canada Aviation and Space Museum in Ottawa to donate the Snowbird for display.







Source : Arbroath Via The Star