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Freighters, Maximum Load Density  
User currently offlineSunriseValley From Canada, joined Jul 2004, 4615 posts, RR: 5
Posted (4 years 2 months 2 weeks 6 days 11 hours ago) and read 2836 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.

4 replies: All unread, jump to last
 
User currently offlineTdscanuck From Canada, joined Jan 2006, 12709 posts, RR: 80
Reply 1, posted (4 years 2 months 2 weeks 6 days ago) and read 2772 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.


User currently offlineSunriseValley From Canada, joined Jul 2004, 4615 posts, RR: 5
Reply 2, posted (4 years 2 months 2 weeks 5 days 23 hours ago) and read 2757 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. !  blush 

User currently offlineTdscanuck From Canada, joined Jan 2006, 12709 posts, RR: 80
Reply 3, posted (4 years 2 months 2 weeks 5 days 21 hours ago) and read 2739 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.


User currently offlineSunriseValley From Canada, joined Jul 2004, 4615 posts, RR: 5
Reply 4, posted (4 years 2 months 2 weeks 5 days 12 hours ago) and read 2672 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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