| 41. | The company also built Ardem piston engines under licence for use in the Turbulents.
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| 42. | The development of the piston engine had reached its peak when the jet was born.
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| 43. | It was replaced by a turbocharged diesel piston engine.
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| 44. | This made the inertia starter a common choice for aircraft with large radial piston engines.
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| 45. | The young Whittle assisted his father in his workshop, where he made valves for piston engines.
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| 46. | It was powered by a Brayton piston engine.
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| 47. | Among writers, they are often as synchronized as a seven-piston engine, each firing in perfect time.
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| 48. | The single piston engine helicopter, a U . S .-made Robinson R44, arrived in Rangoon Wednesday.
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| 49. | Personnel of Wright R-1820-72W Cyclone radial piston engine.
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| 50. | He researched aircraft piston engines and jet engines.
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