That got Meadows and his colleagues looking at sea birds for a design for their craft.

"We studied sea birds seriously," Meadows said. "They're all about the same size---about 20 pounds with a 2-meter wingspan. It turns out that, aerodynamically speaking, that's a sweet spot to be flying close to the water. Our plane is about the size of a large pelican."

Flying Fish, an electric vehicle, drifts until its onboard Global Positioning System tells the craft it has floated too far. That triggers the takeoff sequence, which gets the plane airborne in just 10 meters. Other GPS coordinates trigger the landing sequence. The craft accomplishes both in simple ways, explained Ella Atkins, associate professor of aerospace engineering and associate professor of electrical engineering and computer science.

The flight pattern is, for the most part, a recording of a graduate student's piloting of the plane. That means the takeoff is blind, Atkins explained. The plane takes no measurements of its surroundings. The waves would confuse it.

"Most people wouldn't do it this way," Atkins said. "The plane puts the motors on at full throttle and sets the pitch elevator enough to break out of the water. Then it counts and pitches forward. We believe that if we had done it any other way, we would have basically dived into the ocean on takeoff because the plane would have detected huge oscillations due to the waves."

The landing is basically a shallow descent.

"When it impacts the water, it goes, 'Oh, there's the water,'" Akins said. "The boat has very well-designed pontoons. Because it doesn't have a flat bottom, it cuts into the water like a diver, as opposed to belly-flopping."

The craft was a collaborative effort among researchers in the departments of Naval Architecture and Marine Engineering, Electrical Engineering and Computer Science and Aerospace Engineering.

Next, the team plans to outfit the plane with solar power and add more sensors.

Meadows is also a professor of naval architecture and marine engineering and a professor of atmospheric, oceanic and space sciences.

For more information on the Flying Fish project at the U-M Marine Hydrodynamics Laboratories, visit: http://www.engin.umich.edu/dept/name/facilities/mhl/projects/flying_fish.html

Guy Meadows and Hans Van Sumeren: http://www.engin.umich.edu/dept/name/facilities/mhl/people.html

Ella Akins: http://aerospace.engin.umich.edu/people/faculty/atkins/

To see this release online, visit: http://www.ns.umich.edu/htdocs/releases/story.php?id=6217

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