10th Grade Aeronautics Module

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Rocketry

10

th

Grade Aeronautics Module Overview

Topic:

Rocketry

Grade Level:

10

Course:

Engineering Technology II

Time Allotted for Module:

7-8 weeks

Prior Knowledge:

Students will benefit from the ability to describe motion using position, velocity, and acceleration; a knowledge of trigonometry functions, and familiarity with Newton’s laws.

Overview

Students apply scientific principles to the construction of rockets of increasing complexity. Their efforts lead to an X-prize competition in which groups compete to design, build, and launch a high-powered paper rocket that can carry fifty grams fifty meters into the air.

Students are introduced to rockets through an interactive web site where they assemble and launch four of the rockets presently used by NASA. In doing so, they become familiar with the different parts of a rocket and their functions. Students then begin their study of rockets by looking at the fundamental physics behind all present day rocket propulsion (Newton’s 2nd & 3rd laws). In small groups, students build a rocket sled and characterize its motion using Newton’s Laws.

With the science of propulsion well in hand, students then construct and characterize some simple rockets with different propulsion systems (compressed air and chemical). They examine the idea of multi-stage propulsion systems and consider how Newton’s Laws are applied to different propulsion systems.

Propulsion is just the beginning. A propelled rocket must be stable during flight, so students next build paper rockets and study the concepts of Center of Mass and Center of Pressure. Through a simple ‘drop test’ they predict the stability of their rocket design. Their rockets are then launched and the motion analyzed.

Once students have flight-tested stable rockets, they try to improve the flight performance of their rockets. Students construct a wind tunnel and use it to measure the drag of their flight-tested rocket.

They then make design modifications to reduce drag, verifying with the wind tunnel that their modifications were successful. Note that students must maintain the stability of the rocket even as they make modifications to reduce drag. The new and improved rockets are then flight-tested and their performance is analyzed.

Students are now ready to build and flight-test more advanced rockets, ones that carry payloads and have parachute recovery systems. The stability, drag, and flight performance is characterized as before.

10 th Grade Aeronautics Module Overview Page 1

As a capstone project, teams are challenged to build a rocket that can lift fifty grams fifty meters. Teams must complete proposals, submit budgets, carry out the design process, perform ground-based testing

(which introduces a new stability test), and finally, flight-test their rocket.

Vocabulary

Action: force (push or pull) acting on an object (see Reaction)

Altair: The name of NASA’s future lunar landing craft

Altitude: The height above Earth achieved by a rocket or other vehicle

Ares I and IV: NASA’s new rockets for 21st century space exploration

Attitude Control Rockets: Small rockets that are used as active controls to change the direction attitude) a rocket is facing in space

Balanced Force:

A force that is counterbalanced by an opposing force, resulting in no change in motion

Canards: Small movable fins located towards the nose cone of a rocket

Case: The body of a solid propellant rocket that holds the propellant

Center of Mass: The point in an object about which the object’s mass is equally distributed

Center of Pressure: The point on the surface of an object about which the object’s surface area is equally distributed.

Combustion Chamber: A cavity inside a rocket where propellants burn

Compressed:

Forced into a smaller space than normal

Drag:

Friction forces in the atmosphere that act on a rocket to slow its flight

Fins: Arrow-like wings at the lower end of a rocket that stabilize the rocket in flight

Gimbaled Nozzles: “Tiltable” rocket nozzles used for active flight control

Igniter: A device that ignites a rocket’s engines

Liquid Propellant: Rocket propellants in liquid form

Mass:

The amount of matter contained in an object

Mass Fraction:

The mass of propellants in a rocket, divided by the rocket’s total mass

Microgravity: An environment that imparts to an object a net acceleration that is small compared to what is produced by Earth at its surface

Motion: Movement of an object in relation to its surroundings

Movable Fins: Active rocket fins that are used to stabilize a rocket’s flight

Newton’s Laws of Motion: Laws governing all motion and, in particular, rocket flight

Nose Cone:

The front end of a rocket

Nozzle:

A bell-shaped opening at the lower end of a rocket engine through which a stream of hot gases is directed

10 th Grade Aeronautics Module Overview Page 2

Orion: The name of NASA’s planned orbital spacecraft

Oxidizer: Chemical compounds that permit rocket fuel to burn

Passive Controls: Stationary devices, such as fixed fins, that stabilize a rocket in flight

Payload:

The cargo carried by a rocket

Propellant:

Fuel and oxidizer that burn to produce rocket thrust

Reaction:

A movement in the opposite direction from the imposition of an action (see Action)

Rest: The absence of movement of an object in relation to its surroundings

Solid Propellant: Rocket fuel and oxidizer in solid form

Space Station: An orbital laboratory

Stability: A measure of the smoothness of the flight of the rocket or the ability to move in one direction without perturbation

Stages:

Two or more rockets stacked on top of each other in order to reach a higher altitude or have a greater payload capacity

Throat: The narrow opening of a rocket nozzle

Thrust: The force from a rocket engine that propels it

Unbalanced Force: A force that is not countered by another force in the opposite direction

General Resources

BBC Top Gear Rocket Robin Game http://www.topgear.com/uk/games/rocket-robin

Beginners Guide to Rockets http://exploration.grc.nasa.gov/education/rocket/bgmr.html

Free online introductory physics textbook http://www.lightandmatter.com/books.html

History, Principles, Games, and Activities http://exploration.grc.nasa.gov/education/rocket/TRCRocket/history_of_rockets.html

Interactive Web site for assembling real NASA rockets http://www.nasa.gov/externalflash/RocketScience101/RocketScience101.html

Rockets Educator Guide http://www.nasa.gov/audience/foreducators/topnav/materials/listbytype/Rockets.html

Rocket Topical Index http://exploration.grc.nasa.gov/education/rocket/shortr.html

Soda Straw Rocket Activity http://quilt.jpl.nasa.gov/docs/Straw_Rocket_508FC.pdf

Teacher’s Guide with Activities http://quest.nasa.gov/space/teachers/rockets/

10 th Grade Aeronautics Module Overview Page 3

Materials

DAY 1

Computer w\Internet access

DAY 2-3

1 Board, 1 X 3 X 8 inches

3 (three) 1/4” diameter by 2 1/2” long dowels

(or wood screws)

Wood glue

Cotton string

Two rubber bands (size 19)

Medicine bottles

Straight drinking straws (not flex)

Meter stick or ruler

Metric beam balance or scale

Scissors

Popcorn seeds

Washers

Pennies

Marbles

Paper clips, etc. (for filling the bottles)

Safety goggles

DAY 4-5

2 Long party balloons (round balloon will not work)

Nylon monofilament fishing line (any weight)

2 Plastic straws (milkshake size, non-bendable)

Styrofoam cup

Masking tape

Scissors

DAY 6

Paper clips

Safety pins

Aluminum foil

Wooden matches

Ruler

Stop watch

Masking tape

DAY 7-9

Sheet of 8.5 x 11 paper (white or colored)

Cellophane tape

Scissors

Ruler, meter stick, or tape measure

Fat round pencil or dowel

Eye protection

Drinking straws

Copy of the Ares paper rocket plans

DAY 10-17

One compressed air rocket launcher (see note in Procedure)

Saw and drill required for assembly.

Bicycle pump or small air compressor

A shopping list of parts (with pictures), all of which can be found at a local hardware store and bought for about $150, is included in the teacher resource.

Two or three Launch Altitude Trackers (see note in Procedure)

Tape measure

1/2” PVC pipe (two 6”long pieces, one 12”long piece)

1/2” PVC tee connector

One 10”length of aquarium airline hose (clear vinyl)

1 Straight airline connector

Food coloring

Permanent marker

Rocket construction supplies listed in

HighPowerRockets.pdf

Paper 8 1/2 x 11” (white or color construction paper)

Cellophane tape

Ruler

Protractor

Scissors

1/2” PVC pipe 24” long

Stopwatches

DAY 18-24

Paper concrete tube form (8”or 12" by 4” )

Beam balance or electronic scale (sensitive to

0.1 grams)

Balance or some other weight

Thin wire coat hanger

Nail (about 16D, 3” long)

2 Small screw eyes

String

Duct tape

Transparency paper or clear cellophane

Small electric fan

Needle-nose pliers and wire cutter

10 th Grade Aeronautics Module Overview Page 4

Box cutter (discuss safety issues with students!)

Ruler

Toilet paper roll tubes - about 24

Hot glue

Flashlight

Adhesive or gummed paper reinforcing rings

DAY 25-29

Same as previous, plus:

Plastic grocery bags

Science Standards

String

Washers

DAY 30-35+

Same rocket launcher

Same altitude trackers

Same rocket materials

Graph paper

Cardboard

String

Nature of Science, Standard 1: Practice of Science

SC.912.N.1.1 Define a problem based on a specific body of knowledge, for example: biology, chemistry, physics, and earth/space science, and do the following:

1. pose questions about the natural world,

2.

3. conduct systematic observations, examine books and other sources of information to see what is already known,

4.

5. review what is known in light of empirical evidence, plan investigations,

6. use tools to gather, analyze, and interpret data (this includes the use of measurement in metric and other systems, and also the generation and interpretation of graphical representations of data, including data tables and graphs),

7. pose answers, explanations, or descriptions of events,

8. generate explanations that explicate or describe natural phenomena

(inferences),

9. use appropriate evidence and reasoning to justify these explanations to others,

10. communicate results of scientific investigations, and

11. evaluate the merits of the explanations produced by others

Physical Science, Standard 10: Energy

SC.912.P.10.1 Differentiate among the various forms of energy and recognize that they can be transformed from one form to others.

Physical Science, Standard 12: Motion

SC.912.P.12.2 Analyze the motion of an object in terms of its position, velocity, and acceleration (with respect to a frame of reference) as functions of time.

SC.912.P.12.3 Interpret and apply Newton's three laws of motion.

Math Standards

Algebra, Standard 1: Real and Complex Number Systems

MA.912.A.1.3 Simplify real number expressions using the laws of exponents

MA.912.A.1.5 Use dimensional (unit) analysis to perform conversions between units of measure, including rates

10 th Grade Aeronautics Module Overview Page 5

Algebra, Standard 2: Relations and Functions

MA.912.A.2.1 Create a graph to represent a real-world situation.

MA.912.A.2.2 Interpret a graph representing a real-world situation

MA.912.A.2.7 Perform operations (addition, subtraction, division, and multiplication) of functions algebraically, numerically, and graphically.

Algebra, Standard 5: Rational Expressions and Equations

MA.912.A.5.4 Solve algebraic proportions.

Geometry, Standard 7: Polyhedra and Other Solids

MA.912.G.7.7 Determine how changes in dimensions affect the surface area and volume of common geometric solids.

MA.912.G.8.2 Use a variety of problem-solving strategies, such as drawing a diagram, making a chart, guess-and-check, solving a simpler problem, writing an equation, and working backwards.

MA.912.G.8.3 Determine whether a solution is reasonable in the context of the original situation.

Trigonometry, Standard 1: Trigonometric Functions

MA.912.T.1.5 Make connections between right triangle ratios, trigonometric functions, and circular functions.

MA.912.T.1.8 Solve real-world problems involving applications of trigonometric functions using graphing technology when appropriate.

References

AdvancedRockets.pdf http://www1.nasa.gov/pdf/295786main_Rockets_Adv_High_Power_Paper.pdf

BalloonStaging.pdf http://exploration.grc.nasa.gov/education/rocket/TRCRocket/balloon_staging.html

HighPowerRockets.pdf http://teacherlink.ed.usu.edu/tlnasa/units/Rockets2/18.pdf

HighPowerRocketLauncher.pdf http://www.nasa.gov/pdf/295788main_Rockets_High_Power_Launcher.pdf

HowRocketsWork.pdf http://www.nasa.gov/pdf/153415main_Rockets_How_Rockets_Work.pdf

LaunchAltitudeTracker.pdf http://www.nasa.gov/pdf/153402main_Rockets_Launch_Altitude_Tracker.pdf

MatchRocket.pdf http://exploration.grc.nasa.gov/education/rocket/TRCRocket/match_rocket.html

NewtonRocketCar.pdf http://www.nasa.gov/pdf/153412main_Rockets_Newton_Car.pdf

10 th Grade Aeronautics Module Overview Page 6

PuffRocket.pdf http://www1.nasa.gov/pdf/153413main_Rockets_3_2_1_Puff.pdf

Rocket Assembly Simulation http://www.nasa.gov/externalflash/RocketScience101/RocketScience101.html

WindTunnel.pdf http://teacherlink.ed.usu.edu/tlnasa/units/Rockets2/05.pdf

Wind Tunnel Activity http://www.nasa.gov/audience/foreducators/topnav/materials/listbytype/Rocket_Wind_Tunnel.html

X-51Project.pdf http://www.nasa.gov/pdf/153416main_Rockets_Project_X51.pdf

X-Prize foundation (that started this type competition) http://www.xprize.org/

10 th Grade Aeronautics Module Overview Page 7

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