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DelFly Explorer claimed to be world's first autonomous flapping-wing MAV

By

December 17, 2013

The DelFly Explorer MAV in flight

The DelFly Explorer MAV in flight

Image Gallery (2 images)

We've seen autonomous MAVs (micro air vehicles) before, and we've seen flapping-wing MAVs before. According to a group of researchers from the Netherlands' Delft University of Technology, however, we've never seen an autonomous flapping-wing MAV – until now. Yesterday the four-man team announced its DelFly Explorer, which is described as "the first flapping wing Micro Air Vehicle that is able to fly with complete autonomy in unknown environments."

The MAV has a 28-cm (11-in) wingspan and weighs just 20 grams ("about as much as four sheets of A4 paper"), but still manages to pack in a 4-gram stereo vision system consisting of two cameras and a processor, along with a 1-gram autopilot that incorporates a barometer, accelerometers and gyroscopes. Oh yes, and it also has motors and a battery, the latter of which allows for flight times of about nine minutes.

A multi-exposure shot of the DelFly Explorer flying through a lecture room

It is able to take off, maintain altitude (using the barometer) and avoid obstacles without any human assistance, and with all sensing and processing taking place onboard the aircraft. Its vision system doesn't produce exactly stunning images, but is sufficient for identifying obstacles and determining how far away they are – algorithms built into that system compensate for distortions caused by the flapping motion and the rolling shutter cameras.

In its present form, although the Explorer can move throughout a room without running into things, it can't pass through openings such as doorways or windows. The team is working on adding such capabilities, allowing it to operate more as an exploratory vehicle.

Typical suggested uses for MAVs in general include surveillance and spying, although team member Guido de Croon thinks that craft like the Explorer might also be useful for "fun" applications such as streaming live aerial video at concerts, or taking on the role of fluttering elves at amusement parks.

The Explorer, incidentally, is the fourth DelFly MAV in a line that stretches back to 2005. The previous model, the remote-control DelFly Micro, was recognized by the Guinness Book of Records as the "smallest camera-equipped aircraft in the world".

In the video below, the Explorer can be seen in flight.

Sources: DelFly, Robohub

About the Author
Ben Coxworth An experienced freelance writer, videographer and television producer, Ben's interest in all forms of innovation is particularly fanatical when it comes to human-powered transportation, film-making gear, environmentally-friendly technologies and anything that's designed to go underwater. He lives in Edmonton, Alberta, where he spends a lot of time going over the handlebars of his mountain bike, hanging out in off-leash parks, and wishing the Pacific Ocean wasn't so far away.   All articles by Ben Coxworth
3 Comments

Very good! Very impressive, the amount of electronics (cameras and all) that they've managed to cram onboard such a tiny MAV.

mooseman
17th December, 2013 @ 11:48 pm PST

Interesting. IN 2009 I saw some flying object of this kind developped by Jean François Zufferey at Ecole Polytechnique Fédérale de Lausanne (EPFL Lausanne Switzerland). It was the first model of a bio-inspired system " able to take off, maintain altitude (using the barometer) and avoid obstacles without any human assistance", exactly like the MAV, a little bit heavier and now produced by Sensefly https://www.sensefly.com/home.html

Mochon
18th December, 2013 @ 08:05 am PST

I think that is way cool. It is amazing all that they have on it yet weighs so little.

BigWarpGuy
18th December, 2013 @ 08:28 am PST
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