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LIVE INTERACTIVE LEARNING @ YOUR DESKTOP
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April 23, 2013
7:30 p.m. – 9:00 p.m. Eastern time
Center of Mass and Center of Pressure:
Engineering a Stable Rocket
Presented by: Marti Phipps
http://learningcenter.nsta.org
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Introducing today’s presenter…
Introducing today’s presenters
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Marti Phipps NASA Explorer Schools Education Specialist
Jet Propulsion Laboratory
Pasadena, CA
explorerschools.nasa.gov
From the Rockets Educator Guide
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explorerschools.nasa.gov
GRADE LEVEL
4-12 6
explorerschools.nasa.gov
Are you a participant of
NASA Explorer Schools?
✔ Yes ✖ No
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explorerschools.nasa.gov
Classroom videos
Presentation slides
Links to NASA sites
Related activities
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What are you hoping to get out
of tonight’s web seminar?
Type your thoughts on the screen.
1.
2.
3.
explorerschools.nasa.gov
Outline
The NASA Connection
Navigating the Activity
Building a Rocket and a Launcher
STEM Concepts
Additional Resources
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explorerschools.nasa.gov
Let’s Pause for
Questions
Please type your
questions in the chat!
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Which civilization is credited
with the first recorded use of
rocket propulsion?
A. Chinese
B. Russian
C. Greek
D. German
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explorerschools.nasa.gov
Which civilization is credited
with the first recorded use of
rocket propulsion?
A. Chinese
B. Russian
C. Greek
D. German
21
explorerschools.nasa.gov
Which civilization is credited
with the first recorded use of
rocket propulsion?
A. Chinese
B. Russian
C. Greek
D. German
22
explorerschools.nasa.gov
Which civilization is credited
with the first recorded use of
rocket propulsion?
A. Chinese
B. Russian
C. Greek
D. German
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explorerschools.nasa.gov
A P
ic
to
ria
l H
isto
ry
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To
C
urre
nt D
ay
an
d B
eyo
nd
…
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Ap
plyin
g N
ew
to
n’s L
aw
s
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Te
ach
er P
ag
es
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Next Generation Science
Standards
HS.PS-FM Forces and Motion
HS-ETS-ED Engineering Design
HS-ETS-ETSS Links Among Engineering, Technology,
Science, and Society
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Stu
de
nt P
ag
es
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Ca
lc
ulatin
g A
re
a
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explorerschools.nasa.gov
Let’s Pause for
Questions
Please type your
questions in the chat!
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explorerschools.nasa.gov
LAB
SAFETY
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Po
p! R
ocke
t L
au
nch
er
Minimal cost
Easy to assemble and use
Parts at plumbing or
hardware stores
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Sh
opp
in
g a
nd
A
sse
mb
ly
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Asse
mb
ly
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What qualifies a
successful launch?
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Let’s Pause for
Questions
Please type your
questions in the chat!
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explorerschools.nasa.gov 39
Design
Build
Test Record
Data
Analyze Results Engineering
Design
Process
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Fo
rc
es o
n a
R
ocke
t
weight
thrust
drag
lift
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Ro
cke
t S
ta
bility
center of pressure
center of gravity
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x
For simple shapes:
Balance the rocket from a string or on an edge such as your finger or a meter stick
Finding Center of Gravity
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For more complex shapes:
Hang the rocket from some point
Drop a plumb line from that point
Draw line on rocket along string
Repeat from another point
Find the point of intersection
Finding Center of Gravity
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explorerschools.nasa.gov
x
Trace the shape of the
rocket on cardboard
Cut out the shape
Determine the balance point
Finding Center of Pressure
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Mathematical Approximation
Center of Gravity
df
db
dn
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Mathematical Approximation
Center of Pressure
df
db
dn
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Let’s Pause for
Questions
Please type your
questions in the chat!
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Ro
cke
tM
od
ele
r III
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Ro
cke
t W
in
d T
un
ne
l
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La
un
ch
A
ltitu
de
T
ra
cke
r 52
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Ad
ditio
na
l E
xp
lo
ratio
ns
Calculating Altitude
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Ad
va
nc
ed
H
ig
h-P
ow
er
Pa
pe
r R
ocke
ts
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http:explorerschools.nasa.gov
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Thanks to today’s presenter!
Introducing today’s presenters
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Marti Phipps NASA Explorer Schools Education Specialist
Jet Propulsion Laboratory
Pasadena, CA
Thank you to the sponsor of today’s
web seminar:
This web seminar contains information about programs, products, and services
offered by third parties, as well as links to third-party websites. The presence of
a listing or such information does not constitute an endorsement by NSTA of a
particular company or organization, or its programs, products, or services.
Thank you to the sponsor of tonight’s web seminar—1 of 6
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Thank you to NSTA administration—2 of 6
National Science Teachers Association
David Evans, Ph.D., Executive Director
Zipporah Miller, Associate Executive Director, Conferences and Programs
NSTA Web Seminar Team
Al Byers, Ph.D., Assistant Executive Director, e-Learning and Government Partnerships
Brynn Slate, Manager, Web Seminars, Online Short Courses, and Symposia
Jeff Layman, Technical Coordinator, Web Seminars, SciGuides, and Help Desk
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Upcoming web seminars—3 of 6—stop recording
Upcoming Programs
Human Body: Space Adaptations April 24, 2013
Teaching Climate With Models: Solving the Problems of Energy, Carbon, and Climate April 25, 2013
Monarch Butterflies and Citizen Science April 29, 2013
Register at http://learningcenter.nsta.org/webseminars
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