The Pratt & Whitney JT9D engine was the first high bypass ratio jet engine to power a wide-body aircraft. Its initial application was the Boeing 747-100, the original "Jumbo Jet". The internal structure of the JT9D. Deutches Museum. Munich. Germany.
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Caption: The Pratt & Whitney JT9D engine was the first high bypass ratio jet engine to power a wide-body aircraft. Its initial application was the Boeing 747-100, the original "Jumbo Jet". The internal structure of the JT9D. Deutches Museum. Munich. Germany.