News, facts, and comments on the coming revolution for piston-engine aircraft.
In 1998, one diesel engine flew on a converted airplane for the first time since 1945. Today, close to 4,000 singles and twins are flying. This is the beginning of a worldwide trend which will eventually allow a rebirth of the piston-engined aircraft, around new specs and new missions.
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News of December 30, 2008
SMA continues development of diesel engine
French engine manufacturer SMA continues to pursue development of its aviation diesel engine SR 305-230. Alain Pierre Deniau, Senior Vice President of the SMA subsidiary in the USA recently stated at the AOPA Expo: ”Both the EU as well as the American legislator are continuously tightening exhaust regulations. This means the end of avgas sooner rather than later.” SMA is absolutely confident that its diesel engine - which runs on Jet-A fuel - will produce lower exhaust gas and noise emissions than current aviation powerplants of this class. The latest improvements of the SR 305-230 encompass twin exhaust gas driven turbochargers, a new intercooler, as well as improved cooling due to optimized engine ventilation. In addition the starter and the alternator were renewed and the cylinder heads were overhauled. SMA is continuing to diligently collect field data. Currently there are 44 engines of type SR 305-230 in operation. No incident implicating the engine has been reported. The oldest of them has accumulated 763 flight hours. A TBO, however, has not yet been defined. For the achievement of type certificates and supplemental type certificates (STCs) for installation of the SMA diesel in further aircraft types including the Cessna 182, Maule-9 and various Piper models the manufacturer is continuing the cooperation with its partners. Potential candidates for the installation of this powerplant are basically all single and twin-engine aircraft with engine ratings between 200 and 700 hp, according to Deniau.
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Every month: news, facts, and comments on the coming revolution for piston-engines aircrafts between 130 and 400 HP: Retrofitting a diesel engine to run on Jetfuel or Kerosene, reduce Gallons/Hour by some 30%, eliminate ignition systems (magnetos, spark plugs) and their problems, eliminate mixture control, increase TBO to 2,400-3,000 hours, increase performance between 6,000 and 12,500 ft., and drastically reduce Operating Costs.
The letter is intended for piston engines aircraft owners, manufacturers, fleet operators and FBOs, re-manufacturers of engines for these aircrafts, manufacturers of engine components and ancillaries, and all professionals acting in decisions of engine exchange or refitting at TBO, in North and South America, Pacific Rim, African continent, and all parts of the world were Avgas, Mogas, Kerosene and Jetfuel are available.
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