604 CHAPTER 22 Wings
Fig.22.15
Deflection of two-cell wing section.
and
Ixx= 4 × 650 × 1252 + 2 × 1300 × 1252 =81.3× 106 mm^4also,
Sy,0=44.5× 103 N Sy,1= 1Theq 0 andq 1 shearflowdistributionsareobtainedaspreviouslydescribed(notedθ/dz=0forashear
loadthroughtheshearcenter)andare
q0,12=9.6N/mm q0,23=−5.8N/mm q0,43=50.3N/mm
q0,45=−5.8N/mm q0,56=9.6N/mm q0,61=54.1N/mm
q0,52=73.6N/mmatallsectionsofthebeamTheq 1 shearflowsinthiscasearegivenbyq 0 /44.5× 103 .Thus,
∫
sectionq 0 q 1
Gtds=1
25900 × 2 ×44.5× 103
(9.6^2 × 250 × 2 +5.8^2 × 500 × 2
+50.3^2 × 250 +54.1^2 × 250 +73.6^2 × 250 )
=1.22× 10 −^3
Hence,fromEq.(i),
=
(^2000) ∫
0
44.5× 103 ( 2000 −z)^2
69000 ×81.3× 106
dz+
(^2000) ∫
0
1.22× 10 −^3 dz