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Forum: Tech Log

18th Jul 2004, 20:24

Replies: 16

A340-600 weights

Views: 4,440

Posted By enicalyth

its a drag, hawk

Yeah, total drag. Calculate the surface area of the whole aircraft and say it comes to 21000sq ft. Now paint it so that it has a surface roughness coefficient of say 0.0036. Then its flat plate area...

Forum: Tech Log

17th Jul 2004, 08:14

Replies: 16

A340-600 weights

Views: 4,440

Posted By enicalyth

hello hawk - enicalyth here

I guessed that at about FL350 the A340 would have 7% compressibity i.e. cd tot = cdo + cdi +cdcc = 1.07(cdo + cdi). cdtot is the sum of all the wetted areas plus a fiddle factor for protuberances...

Forum: Tech Log

12th Jul 2004, 07:13

Replies: 16

A340-600 weights

Views: 4,440

Posted By enicalyth

A340-600 fuel consumption

Weight FL290 FL310 FL330 FL350 FL370 FL390
tonnes Fuel consumption in metric tonnes per hour M0.83
355 10.6
345 10.41
336 10.12 10.04
327 9.94 9.78
318 9.72 ...

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