Mumrik wrote:I have heard that it is possible to take of the winglet on the 747-400 and be left with the wingspan of the -400D, so is this true?
Mumrik wrote:And what is then the advantages and disadvantages of these?
GE has already removed the standard winglets because these add unnecessary weight and a maintenance burden to the aircraft’s flight-test role. Later this year, the outer 6 ft. of each wingtip also will be removed, reducing the overall span to the 195-ft., 8-in. of the 747 Classic and effectively converting the aircraft into a -400D “domestic” variant. The -400D was a specially beefed-up variant of the -400 developed for the Japanese short-range market and did not feature the extended wingtips and winglets of the standard -400. Designers say the stiffer wing will reduce potential exposure to limit cycle oscillation and maintain an unrestricted test envelope.
kraz911 wrote:Hello all,
Regarding the winglet 0n the -400, it was six ft. in length or 1.8 meters. I forgot the weight of each. Must be getting old. Sorry...
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