CLARKSON UNIVERSITY
Department of Mechanical and Aeronautical Engineering
AE/ME 350 Aircraft Structural Analysis (Fall 2010)
Test #1
Sept 30, 2010
Closed book
Closed notes
Time : 1:15 hour
1.
Imagine that you are responsible for structural design of a supersonic transport
airplane. What are the five most important
structural design requirements
(criteria)
that you must satisfy?
(5)
2.
Aircraft wing comprises different types of structural elements designed to carry
specific loads. Give one example for each of these structural elements: axial member,
shear panel, bending member, and torsion element.
(5)
3.
Consider a constant shear flow
q
on a closed
thinwalled section of arbitrary shape as
shown in Fig. 1. Show that the resultant
torque
2
TA
q
, where
A
= Area enclosed
by the shear flow.
(5)
q
x
y
Fig. 1
4.
Consider a rectangular plate with a direct tensile stress of 100 N/mm
2
and a shear
stress of 50 N/mm
2
.
Calculate (i) the principal stresses, (ii) orientation of principal
planes (wrt vertical axis), and (iii) if a hole is to be drilled such that there is no shear
stress along the hole, what should be the orientation of the hole.
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 Fall '09
 ACHUTHAN
 Force, Shear Stress, Shear strength, allowable shear stress, Shear flow

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