Mass discrepancy

[Sib-93]

Hello,

I am working on MSC Nastran(Sol 144) and trying to replicate the trim case for M3. I imported the 'structure_only.bdf' but it only contains the weight of structure, which is 5143kgs. However, the payload and fuel weighs 2520kg and 2625kg respectively, summing up gives 10288kgs. In the figure 4.4.2, it can be seen that the mass state M3 ~ 11800kgs. I am curious about this weight difference, and if there is any additional weight(of crew or equipment), where is it located ?

Thanks,
Sib

[ArneVoss]

Hello Sib,
next to fuel and payload, we considered non-structural masses such systems, crew and equipment masses.
Arne

[Sib-93]

Thank you for your reply Arne,

Can you segregate the masses of each(systems, crew and equipment) and tell there location in the model?

Thanks
Sib

[ArneVoss]

For more details, please contact me directly, including a description of your objectives and maybe your name and affiliation.