At the Paris Air Show, Siemens, Diamond Aircraft, and EADS made a significant announcement by showcasing the second-generation DA36 E-Star 2, a tandem hybrid aircraft. This marked a successful maiden flight, demonstrating the potential of electric propulsion in commercial aviation. The aircraft took off from Vienna’s new city airport on June 1, 2013, completing a one-hour flight that proved the viability of hybrid technology for future air travel.
The DA36 E-Star 2 is equipped with a fully integrated drive system developed by Siemens, which is both flexible and scalable. It has the potential to be used in aircraft carrying up to 100 passengers. This system not only improves efficiency but also reduces fuel consumption and emissions by 25% compared to traditional models. Additionally, the second-generation model is lighter than its predecessor, with a weight reduction of about 100 kg, making it more suitable for commercial use.
The propulsion system includes a Siemens motor, power electronics, and a gearbox, all integrated into a compact unit weighing just 13 kg. This system delivers 80 kW during takeoff and maintains 65 kW continuously, offering a power-to-weight ratio of 5 kW/kg. This performance is twice that of the first prototype and six times better than a standard industrial motor. During takeoff and taxiing, the aircraft uses energy stored in batteries, while in cruise mode, the battery is recharged through the generator.
Ralf-Michael Franke, CEO of Siemens AG's Drive Technology Group, emphasized that this technology could soon be applied to small aircraft and eventually scaled up for commercial planes with 50 to 100 seats. He noted that this milestone highlights the future direction of drive technology and shows how integrated systems can boost efficiency across various industries.
During the event, Siemens, Diamond Aircraft, and EADS also announced plans to strengthen their collaboration in the field of hybrid electric vehicles. The DA36 E-Star 2 represents a major step forward in sustainable aviation, proving that hybrid electric systems can meet the demands of commercial flights. With continued development, this technology may play a key role in making air travel greener and more efficient in the years to come.
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