Pratt & Whitney JT9D
The Pratt & Whitney JT9D engine was the first high bypass ratio jet engine to power a wide-body airliner. Its initial application was the Boeing 747-100, the first "jumbo jet".
The Pratt & Whitney JT9D engine was the first high bypass ratio jet engine to power a wide-body airliner. Its initial application was the Boeing 747-100, the first "jumbo jet".
The Pratt & Whitney JT9D engine was the first high bypass ratio jet engine to power a wide-body airliner. Its initial application was the Boeing 747-100, the first "jumbo jet".
Source: Wikipedia "Pratt & Whitney JT9D" · CC BY-SA 4.0
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