Marist College Pagewood

Industrial Technology Engineering

Co2 Dragsters

Workbookand

Folio

Due date_3__/__6__/___11___

Student Name:________________________Class: _____________________________

Teacher: Mr Hayes

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OUTCOMES TO BE ACHIEVED

5.1.1 Identifies, assesses and manages the risks and OHS issues associated with the use of a range of materials, hand tools, machine tools and processes

5.2.1 Applies design principles in the modification, development and production of projects5.2.2 Identifies, selects and competently uses a range of hand and machine tools, equipment and

processes to produce quality practical projects5.3.1 Justifies the use of a range of relevant and associated materials5.4.1 Selects, applies and interprets a range of suitable communication techniques in the

development, planning, production and presentation of ideas and projects5.5.1 Applies and transfers acquired knowledge and skills to subsequent learning experiences in a

variety of contexts and projects5.6.1 Evaluates products in terms of functional, economic, aesthetic and environmental qualities

and quality of construction

Marking Criteria

Your project andportfolio is worth 40% of your marks for this subject. Below are the criteria your teacher will use to mark your portfolios.

Criteria Outcome

Research

Forces 5 4 3 2 1 0 5.2.15.5.1

Drag5 4 3 2 1 0 5.2.1

5.5.1Axles 5 4 3 2 1 0 5.3.1

Shaping 5 4 3 2 1 0 5.5.1

Gantt chart 10 8 6 4 2 0 5.4.1

Evaluation 10 8 6 4 2 0 5.3.15.6.1

Drawing 10 8 6 4 2 0 5.2.15.4.1

Production

Shaping 20 16 12 8 4 0 5.1.15.2.2

Sanding 20 16 12 8 4 0 5.1.15.2.2

Painting 10 8 6 4 2 0 5.1.15.2.2

Total /100

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Criteria Mark allocation

All work is completed in an extensive manner and presented by the due date Work is presented in a neat and attractive manner with correct spelling and

grammar Student shows extensive understanding and analysis of the design brief and the

task they have been given Extensive research is evident Student has compiled an extensive quantity of background information Student has prepared and labelled extensive drawings associated with their topic Student has completed their evaluation in an extensive manner

85-100

All work is completed to a high standard and is presented by the due date Work is neat and attractive using a high level of correct spelling and grammar Student shows a high level of understanding the design brief Student completes research about their topic to a high standard Student has prepared drawings to a high standard Student has completed their evaluation to a high standard

70-84

All work is completed to a satisfactory level and submitted it by the due date Work is presented using a satisfactory level of spelling and grammar Student shows a satisfactory level of understanding the design brief Has completed a satisfactory amount of research Student has prepared most drawings to a satisfactory level Student has completed the evaluation to a satisfactory level

60-69

Student has completed most set work and submitted it for marking on or near the due date

Most work is presented in a tidy and neat manner Student shows some level of understanding the design brief Student has completed some research on their design project Student has produced some drawings for their portfolio Student has completed some aspects of their evaluation

50-60

Student has produced a limited amount of set work Work presented is of an unsatisfactory standard Research is limited Drawings presented are of a poor standard and are not labelled Evaluation is minimally or not done

0-49

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FOLIO EXPECTATIONS

YOU WILL NEED TO BRING THIS FOLIO TO CLASS EVERY LESSON

YOU WILL NEED TO HAVE IT KEPT IN A DISPLAY FOLDER

This folio is a record of your work and progress in Technology and shows who you are and what you are capable of doing.

Expectations:

Use blue or black pen only to write. No gel or coloured pens.

Use pencil to sketch your designs. Use coloured pencils only when colouring in designs. Do not graffiti in your or others folio. Respect your and others folio. Complete ALL set tasks in your folio to the best of your

ability. If you are away YOU need to ensure you catch up on your

work.

HAVE FUN!!

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DESIGN SITUATION AND BRIEF Design Situation:

You have just been given a job as an industrial

designer with a famous drag car company in

Indianapolis. Your job is to design, test and build a

new dragster from balsa wood whose only form of

propulsion is a Co2 canister. The size of the blank

is 305x68x40mm. You will be supplied a set of plastic wheels and 2 axles. The

shape of your dragster body is to be hand finished, painted and decorated.

When your car is finished you will be racing it to see who gets the chequered

flag.

In order to complete this project you will need to research a

number of topics including aerodynamics, friction and car design.

Limitations- You have 6 weeks to complete this task. The due date is ___/____/_____

- You will only be issued with 1 balsa blank. If you need another blank these will

need to be purchased @ 2.00 each.

- You need to supply a “lunch Box or shoe box” type container to hold all the parts.

- You will be required to document all of your research and work in this design

portfolio, this portfolio must include:

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- Title page

- All research you have conducted

- All drawings done as part of project

- A brief description of your finished design and how it works

- A PMI (Plus, Minus Interesting) Evaluation on your project

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1. Situation & Problem

2. Design Brief

3. Research / Investigation / Alternatives

4. Selection of Design Solution

5. Draw/ Plan & Develop

6. Project Realisation / Construction Phase

7. Evaluation

The Design Process

Have you solved the problem?

YES… Well done NO… Back to Step 2

Design Process Complete

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RESEARCH

Shape

1. Using the Internet collect 3 pictures of top fuel dragsters, print them out and paste them into the boxes on the left. In the boxes on the right state what you like about that design.

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What I like about this shape____________________________________________________________________________________________________________________________________________________________________________________________________________________

What I like about this shape____________________________________________________________________________________________________________________________________________________________________________________________________________________

What I like about this shape____________________________________________________________________________________________________________________________________________________________________________________________________________________

Log onto http://en.wikipedia.org/wiki/Top_Fuel to answer the questions

What fuel do Top fuel cars use?_______________________________________________

What is the purpose of the aero-foil behind the rear wheels?______________________

___________________________________________________________________

___________________________________________________________________

What is the top speed of a dragster?_________________________________________

Log onto http://www.grc.nasa.gov/WWW/K-12/airplane/bga.html and define the

word

aerodynamic_______________________________________________________________

__________________________________________________

On the same webpage, locate the word airplane and define these words:

Weight___________________________________________________________ ________________________________________________________________

Drag____________________________________________________________ ________________________________________________________________

Lift______________________________________________________________ ________________________________________________________________

Thrust___________________________________________________________ ________________________________________________________________

ForcesOn the same webpage, fill in the missing forces that also operate on a car when it is in motion.

Fill out the following table

Force on Dragster Advantages Disadvantages

Lift    

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WeightThrust    

Coefficient of Drag(Cod)    

Shape

Shape is critical when designing a car body that has a low drag ratio. Log onto

http://www.grc.nasa.gov/WWW/K-12/airplane/shaped.html and sketch some

common shapes and their drag ratio.

Shape A Shape B Shape C

Which shape has the lowest coefficient of friction? Explain your answer._____________

___________________________________________________________________

___________________________________________________________________

___________________________________________________________________

___________________________________________________________________

___________________________________________________________________

___________________________________________________________________

__________________________________________________________________

___________________________________________________________________

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Drag

Log onto http://en.wikipedia.org/wiki/Drag_coefficient and locate the following answers

.Why do designers try to minimise drag?______________________________________

__________________________________________________________________

Log onto http://en.wikipedia.org/wiki/Automobile_drag_coefficient

What percentage of the power required to cruise at highway speeds is taken up

overcoming drag?_____________________________________________________

Locate a car that has a high Coefficient of drag and a low Coefficient of drag

___________________________________________________________________

Land Speed Record Vehicles.

Use the internet to find the answers; don’t forget to copy and paste the URL of the website

What is a Land Speed Record vehicle? Explain how the design of their fuselage

helps them to reach top speeds__________________________________________

___________________________________________________________________

___________________________________________________________________

2.Locate 3 cars that have achieved a land speed record and paste them in the boxes below. Include the current world record holder.

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Wheel Placement

3. You need to decide where you are to place your wheels on the dragster body to minimise drag. Analyse where the wheels where placed on the cars in question 14. Sketch below the ideal locations.

Explain why you choose these locations for the wheels.

______________________________________________________________

______________________________________________________________

Axles

There are two different types of axles “live” and “dead”. Explain the difference

here

Live -_____________________________________________________

__________________________________________________________

Dead -_____________________________________________________

____________________________________________________________

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Top ViewSide View

Decide on which type of axle you would like to use, and make an annotated

sketch here to show how you will manufacture and attach to your dragster

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DESIGN

Shaping

In the boxes below, sketch 3 of your own dragster designs. Write the strengths, weaknesses and interesting aspects of each design in the boxes.

Plus Minus Interesting

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Plus Minus Interesting

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Plus Minus Interesting

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EVALUATION of DesignsWhich is the best design?

1 2 3Why do you feel this design meets the criteria?

Do you think there will be any technical issues with your design?

How long do you think it will take you to complete the final product?

1week 5weeks 7weeks 13weeks

What help do you think may be needed to complete your product?

What equipment do you think may be necessary to complete your product?

What skills do you hope to pick up during the production of your product?

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Gantt Chart

step Wk 1

Wk 2

Wk 3

Wk 4

Wk 5

Wk 6

Wk 7

Wk 8

Wk 9

Wk 10

research

design

positions for the axles

Tracing

draw the shape of your dragster

shape your blank

Sand and paint

Glue in axles

Follow the instructions below when hand shaping the body.

A. Locate the positions for the axles and drill them on the drill press using a 2.5mm drill.

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This must be done when there is a flat side!!

B. Trace the top and sides of your blank on some paper provided by your teacher. Eg

C. Then draw the shape of your dragster as viewed from the top and sides, cut them out and carefully glue onto your balsa blank.

D. Using a coping saw and files, shape your blank by carefully following

the shapes your have just drawn.

E. Sand and paint.

F. Glue in axles and attach a washer, wheel and finally a nut.

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Right View

Top View

Bottom View

Left View

FINAL DESIGN DRAWING

Draw here what your actual project ended up looking like:

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FINAL EVALUATION1. How did your final product turn out?

Poor Good Excellent

2. What were your strengths in completing the design process?____________

___________________________________________________________

___________________________________________________________

3. What things could you have improved on? __________________________

___________________________________________________________

___________________________________________________________

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4. If you were to do the same design brief over again, would you do anything

different? If so, what?_________________________________________

___________________________________________________________

___________________________________________________________

5. What was your favourite part of the design brief?_____________________

___________________________________________________________

___________________________________________________________

6. What part did you not enjoy the most?_____________________________

___________________________________________________________

___________________________________________________________

7. What could your teacher do to make the task more interesting?___________

___________________________________________________________

___________________________________________________________

8. On the following table tick how you think you went and what mark you think

you deserve for this design task.

5 4 3 2 1

Research

Designing

Making

Time Managemen

t

Completed Product

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Glossary

Below is a list of key words used in this book and by your teacher in the

classroom, ask your teacher if you have trouble filling in the meanings

for some of the words

Aerodynamics

Aerofoil

Co2

Coefficient

Drag

Drag Ratio

Friction

Forces

Lift

Propulsion

Solution

Thrust

Weight

Washer

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