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AA738: Adaptive Trailing Edges/Var Area Fan Nozzle  
User currently offlinefaro From Egypt, joined Aug 2007, 1663 posts, RR: 0
Posted (2 years 4 months 14 hours ago) and read 2627 times:

Very interesting video: AA and Boeing are testing variable area fan nozzles and adaptive trailing edges being "small flap-like devices near the outer portion of the wing" on a line 738:


Any chance of seeing these novelties on the MAX? How much efficiency gain can be expected of each of these design innovations?


The chalice not my son
3 replies: All unread, jump to last
User currently offlineAmericanAirFan From United States of America, joined Jun 2004, 409 posts, RR: 3
Reply 1, posted (2 years 4 months 7 hours ago) and read 2509 times:

That's really cool! Am I right in thinking that the trailing edge flap device can be used in cruise to change the center of lift which would result in changing pitch in cruise reducing drag on the airframe?

"American 1881 Cleared For Takeoff One Seven Left"
User currently offlineStarlionblue From Greenland, joined Feb 2004, 17297 posts, RR: 67
Reply 2, posted (2 years 3 months 4 weeks 1 day 18 hours ago) and read 2345 times:

Pffft, TWA already did this in 1979... http://en.wikipedia.org/wiki/TWA_Flight_841_(1979)

"There are no stupid questions, but there are a lot of inquisitive idiots."
User currently offlineAmericanAirFan From United States of America, joined Jun 2004, 409 posts, RR: 3
Reply 3, posted (2 years 3 months 3 weeks 4 days 18 hours ago) and read 2013 times:

Quoting Starlionblue (Reply 2):
Pffft, TWA already did this in 1979... http://en.wikipedia.org/wiki/TWA_Fli...1979)

Very interesting read! It's also very interesting to read about the foul play of the NTSB with numerous regulations of their own that they broke. Although it seems this has been done before, it is interesting to see them implementing this into the 737. Furthermore, with having variable area fan nozzle, it will be interesting to see how that effects aircraft performance numbers.

"American 1881 Cleared For Takeoff One Seven Left"
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