From
Open navigate to the
C:\Users\Public\Public Documents\Autodesk\Inventor Nastran 2024\Tutorial\en-us\Inventor 2024 folder and open
wing.ipt.
Click
File,
Save As and save the model as
Direct Transient Wing.ipt. This allows you to reuse the original part.
Click
Environments > Autodesk Inventor Nastran.
Go to
Tools > Document Settings > Units. Set the units to inch and lbmass (pound). They will become the
Default units. Or, double-click
Units in the tree and select a
Unit System with units set to inches and pounds.