Siemens is contributing this technology to the cooperative project that Siemens and Airbus agreed to in April 2016 for driving the development of electrically powered flight. The nearly silent aerotow piloted by Walter Extra took a type LS8-neo glider up to a height of 600 meters in only 76 seconds. On Friday, March 24, 2017, the Extra 330LE gave another premiere performance by becoming the world's first electric aircraft to tow a glider into the sky. At the Dinslaken Schwarze Heide airfield in Germany, the electric aircraft reached a top speed of around 340 kilometers per hour (km/h) over a distance of three kilometers. On Thursday, March 23, 2017, the Extra 330LE aerobatic plane, powered by the propulsion system from Siemens, set two new speed records. Siemens has developed a new type of electric motor that, with a weight of just 50 kilograms, delivers a continuous output of about 260 kilowatts – five times more than comparable drive systems. Its development took just over nine months from the initial concept to the finished prototype. This drive system was delivered in an extremely short period of time. In addition to 8 coupled motors Siemens supplies the inverters and the energy management system for the CityAirbus demonstrator. It has a torque density of 30 Nm/kg, which is practically a new record - a nominal torque of about 1,500 Nm is generated with a weight of less than 50 kg. It has been specially designed for this specific application. Heart of the electric propulsion systems is the newly developed SP200D electric motor. On the path to its maiden flight, which is scheduled for late this year, the aircraft has now reached an important milestone: The drive system that Siemens developed for the CityAirbus has been put into operation in a test on the ground. One of the pioneering aircraft that the partners are designing together is the four-seat CityAirbus.
Since 2016 Airbus and Siemens have been working together on the development of hybrid-electric drive systems for the aviation sector.
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