By making {HEAD ~ the stiffening ribs} of the first stiffening grid structure next to the skin and the stiffening walls of the second grid structure next to {TAIL ~ the stiffening ribs} congruent in their cross sectional configurations, integral casting becomes possible and the stiffness of the component is increased 
By making { HEAD ~ the stiffening ribs } of the first stiffening grid structure next to the skin and the stiffening walls of the second grid structure next to { TAIL ~ the stiffening ribs } congruent in their cross sectional configurations , integral casting becomes possible and the stiffness of the component is increased
OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH