The cited 2018 Siemens account names the SP55D motor but does not establish a model-specific continuous rating or current commercial availability.
Siemens reported the SP55D in the 2018 hybrid Magnus eFusion maiden-flight configuration; this is a historical demonstration.
No regulator-issued approval has been verified for this exact product and configuration. A flight demonstration, company quality certification or application for a type certificate does not establish product approval.
Siemens eAircraft: SP55D source; checked 28 October 2026. Historic programme dates and model-specific specifications should be verified against the latest documentation.
