Elektra Trainer
The pilot training electric aircraft
Performance
| Operating speed range | |
|---|---|
| Cruise speed | 120 km/h |
| Stall speed VS0 (flaps extended) | 80 km/h |
| Stall speed VS1 (flaps retracted) | 90 km/h |
| Max. operating speed (max. continuous power) | 173 km/h |
| VNE (never exceed speed) | 180 km/h |
| Max. climb speed (max. power) |
6 m/s |
| Max. climb speed (max. continuous power) |
3 m/s |
| Take off & landing distances | |
| Take-off distance (over 15 m, grass runway) | 285 m |
| Take-off distance (over 15 m, concrete runway) | 250 m |
| Landing distance | 200 m |
| Range & Endurance | |
| Max. flight duration (w/o additional batteries) | 2.5 hours |
| Max. flight range (w/o additional batteries) | 300 km |
| Power plant | |
| E-motor | HPD-50D |
| Max. peak power | 70 kW |
| Max. continuous power | 40 kW |
| Cruise power at 120 km/h | 12 kW |
| Battery capacity (standard) | 30 kWh |
| Battery capacity (with two additional batterie blocks) | 36 kWh |
| Weights | |
| Max. take-off weight (MTOW) | 600 kg | 1322.77 lb |
| Empty weight (with battery) | 400 kg | 881.85 lb |
| Pilot + payload weight | 400 kg | 440.93 lb |
| Other data | |
| Wingspan | 14.5 m |
| Electric variable pitch propeller | 1.75 m diameter |
| Large cabin | 1.20 m width |
| Best glide ratio | 25 |
| Noise level | < 50 dB |
| Certification | LTF-UL-2020 (German ultralight class) |
Main facts
The Elektra Trainer is a modified version of Elektra One, flying since 2011 and is certified in the German ultralight class.
A wider, longer fuselage and reinforced wings make the difference to Elektra One.
The 12 kW incorporated charging system
recharges the empty battery within 3 hours. One hour charge – One hour flight
The standard battery of 30 kWh provides a flight endurance of 2.5 hours and a range of up to 300 km, both values were demonstrated in flight.
The high-end aerodynamics,
an impressive glide ratio of about 25
and an efficient propulsion system
ensure the 120 km/h cruise flight with only 12 kW.
Optional two additional battery packs
of 3 kWh each increase the
flight endurance to 3 hours.
Extremely low noise level
50 dB noise level (German LTF-UL 2020) - moderate rainfall noise. Operation in noise protected areas possible.
Operation costs
The operation costs are significantly lower compared to UL of similar class with combustion engine.
Redundancy
Dual redundant propulsion system. Each of two subsystems is composed of motor, motor controller, battery. Dual redundant power supply for avionics and autopilot. In case of failure of motor, motor controller, battery or all of them in one subsystem, the aircraft is able to climb with at least 1.5 m/s.
Digital Aircraft Platform (DAP)
- Performs real-time analysis and logging of propulsion system data
- Provides intelligent assistance to the pilot in case of system warnings and errors
- Simplifies aircraft inspection and maintenance
- Performs long term analysis of the state of propulsion system components
- Provides web-interface for visualization and analysis of the flight data
Other highlights
- Overall system design optimized for electric flight
- Robust lightweight carbon composite structure
- Thrust reversal for very short landing strips
- Air brakes (option)
- Autopilot (option)
- Variable pitch propeller (option)
- Towing device for gliders (option)
- Large cabin (1.20 m wide) accommodating even 2 m tall pilots
- Simple logistic: can be transported in a glider-like trailer, assembly time of 45 min. by a single person