Boeing 7J7
From Wikipedia, the free encyclopedia
The Boeing 7J7 was a short- to medium-range airliner proposed by Boeing in the 1980s, but never built. It would have carried 150 passengers and was touted as the successor to the successful Boeing 727. It was initially planned to enter service in 1992. This was intended as a highly fuel-efficient aircraft employing new technologies, but it was cancelled when the price of oil dropped during the 1980s.
Contents |
[edit] Technological features
The 7J7 was planned to include advanced technology and electronics 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-fibre
- two General Electric GE-36 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.
[edit] 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) signalled 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). This all but assured that Airbus would be locked out of the lucrative Japanese market.
Japanese industry continues to be a primary foreign partner on the Boeing 787.
[edit] 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.
[edit] References
[edit] Related content
Related development
Comparable aircraft
See also
Timeline of aviation
Aircraft · Aircraft manufacturers · Aircraft engines · Aircraft engine manufacturers · Airports · Airlines
Air forces · Aircraft weapons · Missiles · Unmanned aerial vehicles (UAVs) · Experimental aircraft
Notable military accidents and incidents · Notable airline accidents and incidents · Famous aviation-related deaths
Flight airspeed record · Flight distance record · Flight altitude record · Flight endurance record · Most produced aircraft
