Kiool & Minus-Kiool story

Here is the story of a MAV we design in a student team. We are proud of our tiny aircraft : the Minus-Kiool.
   The configuration was patented at french INPI, so that there is an evidence that it is our design, but it can be copied for non commercial use.

The team

We were three student in the Kiool design team

  • Stephan Aubin
    Student at SUPAERO school (france), he likes everything that fly, and is a specialist of WIGs.
  • Nicolas Quendez
    Student from UTC school, "DEA en mécanique des fluides" at SUPAERO school, he is a modelers for more than 10 years.
  • Matthieu Scherrer
    Myself, student at SUPAERO school, a modelers for more than 10 years, glider addict.
    Thanks to SUPAERO teacher and people, we achieved our dream : fly the tiniest aircraft.

The objective

   Our main goal was to participate to the first french MAV contest, organized by SUPAERO and ENSICA, september 2002.
    We won the contest with this MAV. Our mission was to fly the longer, and take some images of a table, with letter to be read on it.
   Above all our main purpose was to build the tiniest, electrique powered, flyable UAV.

Early prototypes

   Before we found the accurate configuration, which must at first really fly, and then have satisfactory handling qualities, we had quite a hard work.
   Not less than 12 prototype were tested, being more and more successful through the design process.

The Kiool

    The first of our MAV to reach satisfactory standards, was the Kiool, 25cm wingspan. He flew with a 8gm camera onboard. But there were some transmission trouble, and he was still quite too heavy.

    For following release, Kevlar fiber was used and not carbon, and the structural design was enhanced.
   You can see bello the weight distribution.
   Once the inflight behaviour was quite satisfactry, we proceed to wind tunnel testing. The goal was to enhanced as much as possible the aircraft, once the handling issue was raised.


   Here is the final version than won the MAV contest.
   This is a reduced to 19.5cm wingspan version, and the power unit is the same. only the batteries are smaller. Its weight to thrust ratio is fairly good, and the flight is even more secured.
   A great progress was the catapult, too. Indeed, it was difficult to handlauch the MAV, then causing crashes and then hurting our experimental developement process.
On board is a 8 gm micro camera, with its transmetter, that allow live transmission of the flight.

Some figures about Minus Kiool :

Span 19.5 cm
Chord 15 cm
Mass 56 gm
Flight duration + 10 min

Minus Kiool in flight :

A great experience

    This was for us a great experience, we learned team working and experiment. We could apply all what we learned about multidisciplinary optimisation issue.
   We would thank SUPAERO and its teachers, for all the material help they give us.

Contact one of us !
Stephan Aubin, Nicolas Quendez, Matthieu Scherrer