AOE 2104-Aerospace and Ocean Engineering
Fall 2010
AOE 2104
Introduction to Aerospace
Engineering
Lecture 10
Stability and Control 2
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Virginia Tech
Lecture 10
12 October 2010
AOE 2104-Aerospace and Ocean Engineering
Fall

Homework No. 3 Due Tuesday, 9/6
(1) 1.27
Ans: (a) 80.8 MPa (b) 127.0 MPa (c) 203 MPa
(2) 1.61
Ans: (a) 8.92 ksi (b) 22.4 ksi (c) 11.21 ksi
(3) The hydraulic cylinder CF, which partially
controls the position of rod DE, has been locked in
the position show

Homework No. 4 - Due Thursday, 9/8
(1) 1.38
Ans: 27.8 mm
(2) 1.42
Ans: 15.08 kN
(3) 1.43
Ans: 5.75 in
(4) 1.52
Ans: 2.06 kN
(5) A vertical load P = 40 kN is applied as
shown on link AB that is held by a rope. The
ultimate shearing stress in pin B is 360 M

Homework No. 5 Due Tuesday, 9/13
(1) 2.13
Ans: 1.988 kN
(2) 2.15
Ans: 0.1812 in
(3) 2.19
Ans: (a) 32.8 kN (b) 0.0728 mm
(4) 2.28
Ans: (a) 80.4 m (b) 209 m (c) 390 m
(5) 2.27
Ans: 14.74 kN
(6) Three forces are applied as shown on a steel bar (E = 200 GP

Homework No. 6 Due Thursday, 9/15
(1) The 1.5 m concrete post is reinforced with six steel bars, each
with a 28 mm diameter. Knowing that Es = 200 GPa for steel and Ec
= 25 GPa for concrete, determine the maximum centric force P
which can be applied if th

Homework No. 7 Due Tuesday, 9/20
(1) The rigid bar AD is supported as shown by a
pin at A and two steel wires (Es = 30 10 6 psi) at
points B and C, and each wire has a crosssectional area of 0.03 in2. Determine (a) the
normal stress in each wire when a lo

Homework No. 8 - Due Tuesday, 9/27
(1) 2.81
Ans: a = 42.9 mm, b = 160.7 mm
(2) 2.65
Ans: (a) 0.652 mm (b) 23.5 m (c) 1.173 m
(3) A plate made of aluminum alloy (E = 80 GPa,
v = 1/3) is subjected to a horizontal stress as
shown. If a line with slope of 2 s

Homework No. 10 Due Tuesday, 10/4
(1) 3.28
Ans: (a) 20.1 mm (b) 26.9 mm (c) 36.6 mm
(2) 3.158
Ans: 36.1 mm
(3) 3.78
Ans: 4.90 Hz
(4) 3.79
Ans: 50.0 kW
(5) 3.52 Determine the largest torque T that can be applied on the composite shaft and the
angle that en

Homework No. 11 Due Tuesday, 10/11
(1) For the cross-section shown in Fig. P4.10 on page 238 in the book, locate the centroid
and then calculate the moment of inertia with respect to the horizontal centroidal axis.
Ans: 25 mm above the base, I = 512.5 103

Homework No. 12 Due Thursday, 10/13
(1) 4.192
Ans: 8.82 ksi in tension and 14.71 ksi in compression
(2) 4.18
Ans: 4.11 kipin
(3) 4.19
Ans: 177.8 kNm
(4) Two equal and opposite moments of magnitude M = 25 kNm are applied to the
straight beam as shown. Dete

Homework No. 1 Due Tuesday, 8/30, in class
(1) 1.1
Ans: d1 = 22.6 mm, d2 = 15.96 mm
(2) 1.3
Ans: 18.46 kips
(3) 1.59
Ans: 14.93 mm
(4) A horizontal load P is applied to the assembly at point A as
shown, and link BD has a uniform cross-sectional area of 80

OOOOOOOOOOO
Statics Final Exam Review
TOPICS covered on revrew:
Adding vectors
Moments
3D Moments
3D Equrllbrlum
Resultants (wrenches)
Trusses
Internal Forces
Centrords
Area Moments of lnertla
Friction
NonIdeal Pulleys
Problems taken from "Enginee

AOE 2104-Aerospace and Ocean Engineering
Fall 2010
AOE 2104
Introduction to Aerospace
Engineering
Aircraft Structures
Virginia Tech
Aircraft Structures
October 14 2010
AOE 2104-Aerospace and Ocean Engineering
Fall 2010
Understanding Aircraft Structures
Ai

AOE 2104-Aerospace and Ocean Engineering
Fall 2010
AOE 2104
Introduction to Aerospace
Engineering
Aircraft Structures 2
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Virginia Tech
Aircraft Structures 2
October 19, 2010
AOE 2104-Aerospace and Ocean Engineering
Fall

AOE 2104-Aerospace and Ocean Engineering
Fall 2010
AOE 2104
Introduction to Aerospace
Engineering
Aircraft Structures 3
Click to edit Master subtitle style
Virginia Tech
Aircraft Structures 3
October 21 2010
AOE 2104-Aerospace and Ocean Engineering
Fall 2

AOE 2104-Aerospace and Ocean Engineering
Fall 2010
AOE 2104
Introduction to Aerospace
Engineering
Aircraft Structures 4
Click to edit Master subtitle style
Virginia Tech
Aircraft Structures 4
October 26 2010
AOE 2104-Aerospace and Ocean Engineering
Fall 2

FY2011PSGPRiskFormula
PSGPRisk
Threat
(30%)
X
Vulnerability(20%)
X
Consequence(50%)
(DHSI&A)
Vulnerability
Index
(20%)
PopulationIndex
(2%)
Ferry
Passengers
+
+
+
HAZMAT
Volume
X
Population
DomesticCargo
Volume
+
Census
+
+
Commuters
+
HAZMAT
Population
E

Name_
Test #3
ESM 2104
With Answers
October 31, 2007
Closed book, but you may use one 8x 11" formula sheet (one side only).
There are 15 questions, equally weighted.
1.
2.
3.
4.
Fill in your name on this exam sheet.
Fill in your name and ID number on the

Name_
Test #3
ESM 2104
With Answers
November 5, 2008
Closed book, but you may use one 8x 11" formula sheet (one side only) with anything
you hand-write on the one side of the sheet. There are 13 questions, equally weighted.
1.
2.
3.
4.
Fill in your name o

Name_
Test #3
ESM 2104
With Answers
November 3, 2009
Closed book, but you may use one 8x 11" formula sheet (one side only) with anything
you hand-write on the one side of the sheet. There are 14 questions, equally weighted.
1.
2.
3.
4.
4.
Fill in your nam

Quiz 2, Math 2224
Due Date: October 7, 2010
Late papers will not be accepted. You should not get any help from
other people.
Guesswork will not be accepted. All answers must be given in precise
numbers. Do not use a calculator.
[1] Let w = y ln(xz + 3) +

Properties of Seawater
All properties depend on temperature, salinity and pressure so we will look at these
first.
Temperature
Look at the figure of typical temperature profiles. You see a surface layer or mixed
layer in the first few tens of meters of de

Thermohaline Circulation
Thermohaline circulation is responsible for most of the vertical mixing in the ocean.
It is driven by density differences causing one water mass to sink and slide under another,
less dense mass. The density characteristics of a wa