Boeing 7J7

The Boeing 7J7 was a project of a short - and medium-haul aircraft of the U.S. aircraft manufacturer Boeing in the late 1980s, which never, however, left the project stage. The 7J7 should be able to carry 150 passengers and was intended as a successor to the 727. The service line should begin in 1992.


In the 7J7 many at that time advanced and new technologies should be used, including

  • Fly - by-wire control of the Bendix Corporation
  • Honeywell glass cockpit with LCD screens
  • Modern, integrated avionics suite
  • Extensive use of resistant composite materials such as carbon fiber reinforced plastic
  • Two mounted at the stern General Electric engines GE -36 UDF (UDF = ​​unducted fan, caseless rotors so -called propfans ) lying with two rear, counter-rotating propellers

Thus, the fuel consumption should be reduced by more than 60% compared to previously airplanes. The cabin of 7J7 should - similar to the Antonov An -180 - get 2 seats per row and two aisles - a seating interpretation 2-3. You would therefore have had a very wide and spacious for its class cabin.

Development partners outside the USA

For 7J7 a never -before-seen number of foreign development work was provided - among other Japanese companies should take a total of 25 % of the project. However, the potential customer had on the economy and the noise of the new prop-fan engines concerns, which eventually led to the Boeing 7J7 project in 1987 due to lack of customer interest dropped out and focused on further development of the models 737 and 767.

The participating Japanese companies were not initially satisfied with this decision, as the 7J7 should serve the Japanese as a gateway to the lucrative market for civil aircraft. However, as a compensation they received large shares of production and development of later Boeing projects (approximately 15% for the Boeing 767, 21 % for the Boeing 777 and finally about 35 % of the 787 ).


Together with the 7J7 also competed projects between the two rival Boeing, Airbus and McDonnell Douglas to the interest of the airlines. On one hand, the A320 and on the other hand ( also equipped with propfans ) McDonnell Douglas MD- 94X. The A320 should have similar advanced technology and electronics as the 7J7, but was driven by conventional turbofan engines. After the development of the Boeing 7J7 and McDonnell Douglas MD - 94X which the einstellten, the A320 sold very well ( to August 2005 over 3600 orders for all members of the A320 family) and so helped Airbus to the final breakthrough in the civil aircraft market. Only with the Boeing 737 model series, the Next Generation ( the 737-600 to -900 ) Boeing won in this segment back ground. Many of the activities for the 7J7 technological improvements eventually found in the 737 Next Generation and especially the much larger 777 application.

40 • 50 • 73 • 75 • 80 • 200 • 221 • 247 • 307 • 314 • 377

707 • 717 • 727 • 737 • 747 • 757 • 767 • 777 • 787 • BBJ

367 • 7J7 • 2707 • Pelican • ULTRA Sonic Cruiser • X -40 X -43 • • • X -48 X -53 • • Y1 Y2 Y3 •

See also: List of military aircraft manufacturer Boeing and helicopter manufacturer Boeing

  • Boeing
  • Aircraft project
  • Twin-engine aircraft