FAI Aeromodelling Commission (CIAM)
F5 - Electric Flight
The World Championship Classes in Electric Flight consist of F5B Glider and F5D Pylon Racing. The important element in both classes is the limitation of energy to slow down the aircraft, especially for safety reasons. The effect of power limiting is the prolonging of the battery life, which results in competitors having to combine efficient energy use with tactical and flying skills.
CLASS F5B - ELECTRIC POWERED MOTOR GLIDERS
This contest is a multi-task event for RC electric powered motor gliders of Distance and duration and Landing. These two tasks are executed in one uninterrupted flight.
Model Aircraft specifications:
- Minimum weight without battery: 1’000 g
- Minimum surface area: 26.66 dm 2
- Type of battery: Lithium Polymer
- Maximum number of only serial cells: 10
- Minimum weight of battery pack: 450 g
- Limitation of energy by an electronic limiter that stops the motor: max. 1’750 Watt-min
CLASS F5D - ELECTRIC POWERED PYLON RACING MODEL AIRCRAFT
This class is a racing event for electric model aircrafts only. The race consists of 10 laps around a triangle measuring 400 m in circumference. The best competitors fly their model aircraft over a distance of more than 4 km in just 70 seconds or less !
Model Aircraft specifications:
- Minimum weight ready to fly: 1’000 g
- Maximum surface loading: 65 g/dm2
- Battery Type: Lithium Polymer
- Minimum weight of battery pack: 200 g
- Maximum weight of battery pack: 400 g
- Limitation of energy by an electronic limiter that stops the motor: max. 1'000 Watt-min
