Ultra-e

Manufacturing the most fuel efficient Ultralight aircraft leads Protoplane to start the Ultra-e program that will be the first electric twin seater marketed in 2010.

Making an electric aircraft is very difficult, because one pound of mogas stores the same energy as 54 pounds of the best space designed Lithium-Ion battery cells ; So Ultra-e focus on the objective of running 280 km (174 mi) at 160 km/h (100 mhp) with 21 kWh, equivalent to 3,2 l of mogas (0,85 USG).

To save Earth ressources, solar panels on hangar's roof will provide the Ultra-e with 2 to 3 daily flight hours.

To reach that goal, Protoplane and partners has many challenges to win in terms of weight saving, aerodynamic efficiency, batteries, motor and propeller.