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 SunriseValley From Canada, joined Jul 2004, 5379 posts, RR: 5Posted Sun Jan 31 2010 06:16:02 UTC (5 years 1 month 3 weeks 5 days 8 hours ago) and read 3183 times:

 The 777F and 747-8F apparently have a maximum load density of 158.6 kg/ cu. m. Does any one have this data for the other 747 freighter versions and the A330-200F? Thanks.
 Tdscanuck From Canada, joined Jan 2006, 12710 posts, RR: 80 Reply 1, posted Sun Jan 31 2010 17:22:55 UTC (5 years 1 month 3 weeks 4 days 21 hours ago) and read 3119 times:

 Quoting SunriseValley (Thread starter):Does any one have this data for the other 747 freighter versions and the A330-200F?

747-400F: 162.3 kg/m3
747-400ERF: 161.8 kg/m3
747-400BCF: 160.5 kg/m3
A330-200F: 145.3 kg/m3

Tom.

 SunriseValley From Canada, joined Jul 2004, 5379 posts, RR: 5 Reply 2, posted Sun Jan 31 2010 18:58:09 UTC (5 years 1 month 3 weeks 4 days 20 hours ago) and read 3104 times:

 Thanks Tom. After I posted the question I realised that kg/m3 does not , by itself, provide floor loading. On reflection I guess that so long as the max density is not exceeded , the floor load is not exceeded. !
 Tdscanuck From Canada, joined Jan 2006, 12710 posts, RR: 80 Reply 3, posted Sun Jan 31 2010 20:37:32 UTC (5 years 1 month 3 weeks 4 days 18 hours ago) and read 3086 times:

 Quoting SunriseValley (Reply 2):On reflection I guess that so long as the max density is not exceeded , the floor load is not exceeded.

That's mathmatically true, but very unlikely to happen in practice because the max density is extremely low (SG of ~0.15). Unless you're carrying stuff that's got a lot of low density packing material (think tons of packing peanuts), you're quite likely to be carrying cargo that's above max density and you just run out of weight before you run out of volume.

Tom.

 SunriseValley From Canada, joined Jul 2004, 5379 posts, RR: 5 Reply 4, posted Mon Feb 1 2010 05:56:01 UTC (5 years 1 month 3 weeks 4 days 9 hours ago) and read 3019 times:

 Quoting Tdscanuck (Reply 3):you're quite likely to be carrying cargo that's above max density and you just run out of weight before you run out of volume.

I would expect that this depends very much on the operator's load mix. The package operators like FX are about 120 kg/m3 which is considerably less than the typical ~ 160. So I would expect they run out of volume first.
Interesting to note that EK quote the volume capacity of their 777F at 550 m3 much less than the Boeing figure of 636 m3. Perhaps to do with their average density and/ or sector length that they fly with the type. AF quote their number at 653 m3.

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