Green Speed Cup Final: a Mix of Well-Flown Aircraft

Dean Sigler Electric Powerplants, GFC, Sustainable Aviation 0 Comments

Day three of the Green Speed Cup in Strausberg, Germany brought few surprises other than how fuel efficient all of the aircraft turned out to be, especially considering they are all powered by gasoline engines.  Normally, this would demonstrate that even a light machine uses large amounts of fuel, but this contest demonstrated the benefits of good design and careful piloting. The Akaflieg Darmstadt D39 flown by Holger Massow came in first, winning the last two days outright.  Second went to Hans-Peter Ortwein flying a Stemme SV-10T, and third, perhaps surprisingly, to the only two-stroke powered machine, a Technoflug Piccolo, a fixed-gear, high-wing motorglider with an engine sticking up behind the wing.  The Piccolo was flown by Werner Scholz. Two …

The 2015 Green Speed Cup

Dean Sigler Electric Powerplants, Sustainable Aviation 0 Comments

Robert Adam writes to let the CAFE Foundation know that the 2015 Green Speed Cup is underway, just now finishing its second of three days of competition.  Think of a Green Flight Challenge with a need for green speed balanced against a need for economical use of energy.  Taking place out of Strausberg Airport in Germany, the event consists of three days of tasks which always bring the competitors back home ever day. “Every task comes with a minimum energy consumption. It will be derived from the energy used by a reference airplane on 10% of the tasks length at MCP. Combustion and electric aircraft use different reference airplanes. Class definitions All aircraft capable of taking off under own power, …