Turbofan Engine, Low Bypass, Full Ducted, 1960s

In the 1960s, short- and medium-range jet airliners such as the B727, B737, and DC-9 appeared, contributing greatly to the shift to jets.They were powered by the P&W JT-8D turbofan engine. It became a best-selling engine after that, with over 14,000 units produced, including advanced versions. Although the bypass ratio was only about 1:1, it made the most of the technology available at the time.Structurally, assembly work was required, with ring-sliced parts stacked one by one.This is a referen…

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