| 31. | A small fossil fuelled piston engine sized for average power use charges the accumulator.
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| 32. | But that six-cylinder piston engine was Mike, and still is.
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| 33. | These large piston engines resemble automobile engines, only much larger.
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| 34. | Although based on the 890H the 892S had four Renault 12S inline piston engines.
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| 35. | This reduces pre-detonation, a problem with hydrogen fueled piston engines.
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| 36. | The Dragon Drone is powered by a small piston engine.
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| 37. | It is, however, common for piston engine and ventilation intakes.
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| 38. | Efficient turboprop engines would give better performance than piston engines.
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| 39. | The Wankel engine has a 50 % longer stroke duration than a piston engine.
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| 40. | Thielert claims increased power and improved fuel economy over other available conventional piston engines.
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