The Flea fuel consumption is an average 'real world' figure that flight time/fuel capacity/weight/wing loading calculations can be made from. As Eric said..in the test airframe with a 20oz tank the Flea has a duration of 9 mins + take off + gear check circuit & landing.

I think the design philosophy behind the 2 engines are further apart than it might appear, the Flea should appeal to those minimalists seeking nano turbine low installed size/weight, this does require more user involvement during the start process.

Hope that helps, Rob.