Boeing 7J7 Totally Explained

Everything about The Boeing 7j7 totally explained

The Boeing 7J7 was a short- to medium-range airliner proposed by the United States aircraft manufacturer Boeing in the 1980s. It would have carried 150 passengers and was touted as the successor to the successful Boeing 727. such as:

fly-by-wire flight control system by Bendix

glass cockpit by Honeywell utilizing LCDs

advanced integrated avionics suite

widespread use of high-strength composites such as carbon-fiber

two General Electric GE36 UDF rear-mounted advanced technology contra-rotating unducted fan engines. The sum of all these features promised better fuel consumption by more than 60% compared to any existing large passenger aircraft technology at the time. "Efficiency" was the key theme. The 7J7 was to have a twin-aisle (2+2+2) seating configuration, giving an unprecedented wide and spacious cabin for its class, with no passenger more than one seat from an aisle.

Foreign partnership

It was also unprecedented in its foreign content with Japan having 25% industrial workshare. Potential customers were concerned about the economics and noise of the unproven propfan engines. Boeing cancelled the 7J7 in 1987 and instead concentrated its resources on further developments of the Boeing 737 and the Boeing 757.
The project's cancellation (as disappointing as it was to the Japanese aviation industry) signaled a new era of cooperation between Boeing and Japanese suppliers. Japanese companies contributed significantly larger percentages of subsequent Boeing projects (about 15% of the Boeing 767 and 25% of the Boeing 777).
Japanese industry continues to be a primary foreign partner on the Boeing 787.

Competition

Competing with the 7J7 for airline interest was the McDonnell Douglas MD-94X, also powered by propfans, and the (then proposed) Airbus A320. The A320 featured a lot of similar advanced technology and electronics but was powered by conventional turbofan engines. With the cancellation of the 7J7 and the MD-94X offerings, the A320 sold well until Boeing regained parity with the introduction of the next-generation Boeing 737-600 to -900. The next-generation 737s and the 777 incorporate many of the proposed 7J7 improvements.

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