center of mass and center of pressure: engineering a...
TRANSCRIPT
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LIVE INTERACTIVE LEARNING @ YOUR DESKTOP
Start recording—title slide—1 of 3
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June 4, 2013
6:30 p.m. – 8:00 p.m. Eastern time
Center of Mass and Center of Pressure:
Engineering a Stable Rocket
Presented by: Marti Phipps
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http://learningcenter.nsta.org
NSTA Learning Center—2 of 3
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About the NSTA Learning Center—3 of 3
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Introducing today’s presenter…
Introducing today’s presenters
4
Marti Phipps NASA Explorer Schools Education Specialist
Jet Propulsion Laboratory
Pasadena, CA
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explorerschools.nasa.gov
From the Rockets Educator Guide
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explorerschools.nasa.gov
Are you a participant of
NASA Explorer Schools?
✔ Yes ✖ No
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explorerschools.nasa.gov
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explorerschools.nasa.gov
Classroom videos
Presentation slides
Links to NASA sites
Related activities
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Where are you with the NGSS?
Type your thoughts on the screen.
1.
2.
3.
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explorerschools.nasa.gov
GRADE LEVEL
6 - 8
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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
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explorerschools.nasa.gov
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explorerschools.nasa.gov
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Let’s Pause for
Questions
Please type your
questions in the chat!
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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
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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
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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
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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
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explorerschools.nasa.gov
A P
ic
to
ria
l H
isto
ry
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explorerschools.nasa.gov
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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explorerschools.nasa.gov
MS. Forces and Interactions Performance Expectations
MS-PS2-2: Planning an investigation to provide evidence that the change in an object’s motion depends on the sum
of the forces on the object and the mass of the object.
Science and Engineering Practices Disciplinary Core Ideas Crosscutting Concepts
• Asking questions and defining
problems.
• Planning and carrying out
investigations.
• Constructing explanations and
designing solutions.
PS2.A: Forces and motion Influence of science engineering and
technology on society and the natural
world.
Dimensions
Center of Mass and Center of Pressure: Engineering a Stable Rocket
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explorerschools.nasa.gov
MS. Engineering Design Performance Expectations
MS-ETS1.1: Define the criteria and constraints of a design problem with sufficient precision to ensure a successful
solution.
MS-ETS1-2: Evaluate competing design solutions using a systematic process to determine how well they meet the
criteria and constraints of the problem.
MS-ETS1-3: Analyze data from the tests to determine similarities and difference among several design solutions to
identify the best characteristics of each.
Science and Engineering Practices Disciplinary Core Ideas Crosscutting Concepts
• Asking Questions and Defining
Problems
• Analyzing and Interpreting Data
• Engaging in Argument from
Evidence
ETS1.A: Defining and Delimiting
Engineering Problems
ETS1.B: Developing Possible
Solutions
ETS1.C: Optimizing the Design
Solution
Influence of Science, Engineering,
and Technology on Society and the
Natural World
Dimensions
Center of Mass and Center of Pressure: Engineering a Stable Rocket
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Te
ach
er P
ag
es
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Stu
de
nt P
ag
es
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explorerschools.nasa.gov
Ca
lc
ulatin
g A
re
a
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Let’s Pause for
Questions
Please type your
questions in the chat!
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LAB
SAFETY
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explorerschools.nasa.gov
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
op
pin
g a
nd A
ssem
bly
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explorerschools.nasa.gov
MS. Forces and Interactions Performance Expectations
MS-PS2-2: Planning an investigation to provide evidence that the change in an object’s motion depends on the sum
of the forces on the object and the mass of the object.
Science and Engineering Practices Disciplinary Core Ideas Crosscutting Concepts
• Asking questions and defining
problems.
• Planning and carrying out
investigations.
• Constructing explanations and
designing solutions.
PS2.A: Forces and motion Influence of science engineering and
technology on society and the natural
world.
Dimensions
Center of Mass and Center of Pressure: Engineering a Stable Rocket
![Page 38: Center of Mass and Center of Pressure: Engineering a …learningcenter.nsta.org/products/...EngineeringaStableRocket_6-4...Engineering a Stable Rocket ... • Tools to plan and document](https://reader031.vdocuments.mx/reader031/viewer/2022022007/5accc1607f8b9aa1518ca63d/html5/thumbnails/38.jpg)
explorerschools.nasa.gov
MS. Engineering Design Performance Expectations
MS-ETS1.1: Define the criteria and constraints of a design problem with sufficient precision to ensure a successful
solution.
MS-ETS1-2: Evaluate competing design solutions using a systematic process to determine how well they meet the
criteria and constraints of the problem.
MS-ETS1-3: Analyze data from the tests to determine similarities and difference among several design solutions to
identify the best characteristics of each.
Science and Engineering Practices Disciplinary Core Ideas Crosscutting Concepts
• Asking Questions and Defining
Problems
• Analyzing and Interpreting Data
• Engaging in Argument from
Evidence
ETS1.A: Defining and Delimiting
Engineering Problems
ETS1.B: Developing Possible
Solutions
ETS1.C: Optimizing the Design
Solution
Influence of Science, Engineering,
and Technology on Society and the
Natural World
Dimensions
Center of Mass and Center of Pressure: Engineering a Stable Rocket
![Page 39: Center of Mass and Center of Pressure: Engineering a …learningcenter.nsta.org/products/...EngineeringaStableRocket_6-4...Engineering a Stable Rocket ... • Tools to plan and document](https://reader031.vdocuments.mx/reader031/viewer/2022022007/5accc1607f8b9aa1518ca63d/html5/thumbnails/39.jpg)
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Class Discussions
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Asse
mb
ly
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explorerschools.nasa.gov
What qualifies a
successful launch?
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How can this lesson cover
NGSS?
Type your thoughts on the screen.
1.
2.
3.
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Let’s Pause for
Questions
Please type your
questions in the chat!
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explorerschools.nasa.gov
Design
Build
Test Record
Data
Analyze Results Engineering
Design
Process
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explorerschools.nasa.gov
Video Series: Science
Project
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Fo
rc
es o
n a
R
ocke
t
weight
thrust
drag
lift
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explorerschools.nasa.gov
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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explorerschools.nasa.gov
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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explorerschools.nasa.gov
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explorerschools.nasa.gov
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explorerschools.nasa.gov
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explorerschools.nasa.gov
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explorerschools.nasa.gov
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Calculating Altitude
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explorerschools.nasa.gov
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explorerschools.nasa.gov
Foam Rockets
Objective:
Rocket Stability
Trajectory
Description:
Construct rockets to
investigate the relationship
between launch angle and
range
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explorerschools.nasa.gov
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explorerschools.nasa.gov
http:explorerschools.nasa.gov
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Thanks to today’s presenter!
Introducing today’s presenters
Marti Phipps NASA Explorer Schools Education Specialist
Jet Propulsion Laboratory
Pasadena, CA
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Thank you to the sponsor of
tonight’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
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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