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Topic: AA738: Adaptive Trailing Edges/Var Area Fan Nozzle
Username: faro
Posted 2012-12-28 02:13:24 and read 2338 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:

http://www.youtube.com/watch?feature=endscreen&v=qL21pK6gkRA&NR=1

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


Faro

Topic: RE: AA738: Adaptive Trailing Edges/Var Area Fan Nozzle
Username: AmericanAirFan
Posted 2012-12-28 09:27:10 and read 2220 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?

Topic: RE: AA738: Adaptive Trailing Edges/Var Area Fan Nozzle
Username: Starlionblue
Posted 2012-12-28 22:13:56 and read 2056 times.

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

Topic: RE: AA738: Adaptive Trailing Edges/Var Area Fan Nozzle
Username: AmericanAirFan
Posted 2013-01-01 22:31:44 and read 1724 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.


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