9 Revolutionary Aircraft Engine Breakthroughs That Changed Aviation History

5. General Electric J47 Turbojet

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The General Electric J47 was the first axial-flow turbojet engine certified for commercial use in the United States. Its advanced combustion system and variable stator vanes ensured reliable performance across a wide range of conditions. The engine's success in both civilian and military applications demonstrated the practicality of jet propulsion. With over 30,000 units produced, the J47 set new industry standards for reliability and performance in jet engine design and manufacturing.