On Fri, 13 Mar 2009 08:49:59 -0700 (PDT), sisu1a
wrote:

Just read an AOPA article about hybrid engines being developed in
Germany, but the article is rather short. http://tinyurl.com/aqnq5o
anyone have any additional info?

Just this from http://www.flightdesign.com/ :

Flight Design Presents New Propulsion System; Green Power Proof of Concept to Debut at Aero
2009-03-13

At the Aero show or salon in the picturesque lakeside resort of Friedrichshafen Germany, the world’s largest Light-Sport Aircraft Manufacturer, Flight Design GmbH will debut one of the first legitimate “green” projects for light aircraft powerplants. Aero is scheduled to run 2-5 April 2009 and will include debut the event’s first show-within-the-show, the E-Flight-Expo.



“Rising oil prices and environmental regulations will begin force airplane manufacturers to rethink propulsion systems. Flight Design is sure that in the long term, research developments for electric or hydrogen powered propulsion systems will provide realistic, useful solutions,” said Flight Design CEO, Matthias Betsch. “To have in the short and middle term efficient and environmentally-friendly airplanes for general aviation, Flight Design has in the last two years developed together with Franz Aircraft Engines a Hybrid concept, which first will be shown to the public at Aero.” The Aero event in Friedrichshafen, Germany is one of the most important shows in Europe and is often used to debut new technology.
Flight Design explained that the concept is based on using a well-established certified aircraft engine together with an electric booster. The concept combines the reliability of a certified engine with a very high boost power of the electric motor, which is only used for take-off and climb. “The result is an optimized engine in respect to size, weight and fuel efficiency for cruise flight, with additional 40 horsepower for take-off, climb or during an engine stoppage due to fuel starvation”, said Betsch

.

Due to of the low installed system weight, the propulsion system will give new possibilities for general aviation airplanes by increasing payload. First flight tests of the new powerplant system will be made in 2009 using an existing airplane. Flight Design also indicated that preliminary talks with the EASA regarding sensible ways of certification have been already successfully conducted.
Flight Design is a 23-year-old air sport products producer based in Germany. Over 1,300 of its aircraft are flying in 25 countries. One of the first aircraft certified under the American ASTM standards, in 2005, the CT (“composite technology”) remains the best-selling LSA in America through four consecutive years. CT in several models has been popular in Germany and Europe for more than thirteen years.