4th Annual Cardboard Canoe Challenge

Back again for round 2, last year my groups boat didn't turn out as good as we imagined, so this is my chance to have success.

The Spicey Llamas are claiming 17 credits

The Cardboard Canoe Challenge tests how you well you can work with a team mostly. There are other factors involved like brainstorming, prototyping, designing, and learning from our small failures. Taking a bunch of cardboard and three large rolls of duct tape we had to create a boat to hold one member across the pool. After we went across the pool there was a series of challenges to complete achievements that were available to earn.

Design Achievements

1st Achievement

Define Problem

• Create a boat that will carry at least one group member across the pool

 Brainstorm Solutions

1. rectangle box
2. rocket ship
3. like the things on the water log rides
4. boat with a rudder
5. a box with a paddle
6. have a keel
7. wings on the side
8. pointed bow
9. sea kayak
10. submarine
11. v-bottom boat
12. floating bowl
13. box in a box
14. mini sailboat
15. paddle board with sides
16. jet ski
17. motor boat
18. floating bed
19. boat designed to look like a shark
20. boat with side support

2nd Achievement

Criteria

• Build a boat that will get you across the school pool
• One person will have to be in the boat while it crosses the pool
• No time for trashing the pool

Constraints

• The only materials to be used are Duct tape and cardboard
• The wall of the boats must be 3 inches or taller
• The entire surface needs to be completely covered in Duct tape
• Limited amount of cardboard and Duct tape

3rd Achievement

Sketch Ideas

1. Flat bottom for stability
2. Tall sides to assure that no water will come over the sides
3. Pointed bow to cut through the water

1. Pointed bow for aerodynamics
2. Covered on top to prevent water from splashing in
3. Multiple layers of cardboard on the bottom for durability

1. Side support for stability
2. High wall to keep water out
3. A paddle to move the boat

4th Achievement

Prototype

5th Achievement

Select an Approach

6th Achievement

Surface Area

60 yards x 1.88 inches x 3 rolls

180 feet x 0.15667 feet x 3 rolls

28 feet squared x 3 rolls

84 feet squared

Efficiency: about 88%

Build Achievements

7th Achievement

Build It!

We met the standards of construction (100% of our boat was covered in duct tape and there were no foreign objects in the cardboard).

Test Achievements

8th Achievement

The Fastest

The Spicey Llamas are speedy water llamas. Technically we came in second, but the other team used string to help them so we are able to claim this achievement.

9th Achievement

The Farthest

Not only are we fast, but we are strong and can go on for many laps with no problems.

10th Achievement

The Longest

Our canoe stayed afloat the entire time we were in the pool and could stay afloat for a lot more time. At the end of the period our boat was completely intact.

11th Achievement

Balance Master

The Spicey Llamas can balance for more than 5 seconds.

12th Achievement

Videographer

We took a video of all the challenges we did at the pool.

Reflection Achievements

13th Achievement 

Feedback

• + thickness of the bottom helped durability
• Change: add a pointed bow
• ? How much more weight could our boat have held if the weight was distributed evenly and had more space?
• ! We got almost every achievement you could get!

14th Achievement

How low did you go?

Our canoe didn't sit very low at all in the water. It was surprising how little it went under water. The weight of water in pounds is 62.43 lbs/ft cubed. The pilot weighed roughly 140 pounds. The boat only sat about an inch in the water with only one person in it.
15th Achievement

Redesign

If I were to do the project again I wouldn't change much at all because it worked so well. If we had enough time I would want to try to make a pointed bow

16th Achievement

Make Your Own Achievement

1. The tank: Make a boat that can stay afloat with 500 pounds inside the boat- We had 535 pounds in the boat at one time and if the weight was distributed equally we could have put even more in!
2. The Middle Passage: Fit two people inside the boat while it stays afloat- We fit 3 people into our canoe! (We are trying to earn the 17th Achievement with this new record we set)

The Pac Man Game: We didn't do all that spectacular in this challenge but we did get a few boards (2 blue and 1 yellow) and the video

Activity 1.1.1 Wheel and Axle

This is my Wheel and Axle:

Calculate:

Diameter of the Wheel: 64 mm
Diameter of the Axle: 4 mm

Ideal Mechanical Advantage (IMA)
IMA= Diameter(axle/resistance force)/Diameter(wheel/effort force)
IMA= 4 mm/64 mm
IMA= 1/18

Ideal Mechanical Advantage (IMA) when resistance force is applied to the wheel
IMA= Diameter(wheel/resistance force)/Diameter(axle/effort force)
IMA= 64 mm/4 mm
IMA= 18/1

Ideal Effort Force (MA)- Force needed to overcome the known resistance force if the resistance force is applied to the wheel
MA= Resistance Force/Ideal Mechanical Advantage
MA= 0.5 Newtons x 18
MA= 9 Newtons

Actual Mechanical Advantage (AMA)
AMA= Force Resistance/Force Effort
AMA= 0.5 Newtons/15 Newtons
AMA= 0.033

Efficiency of wheel and axle system (E) when the resistance force is applied to the wheel
E= AMA/IMA
E= 0.033/18
E= 0.001852

Examples of wheel and axle:

1. Steering Wheel
2. Faucet

Activity 1.1.1 Second Class Lever

This is my second class lever.

Calculate:
Ideal Mechanical Advantage (IMA)
IMA= Distance(effort force)/Distance(resistant force)
IMA= 15 Lego holes/ 8 Lego holes
IMA= 1.875

Ideal Effort Force to overcome the known Resistance Force
MA(mechanical advantage)=Force(resistance)/Force(effort)
2= 1 Newtons/ Force(effort)
Force(effort)= 0.5 Newtons

Actual Mechanical Advantage (AMA)
AMA=Force(resistance)/Force(effort)
AMA= 1 Newtons/ 0.5 Newtons
AMA= 2

Efficiency of the lever system
Efficiency= AMA/IMA
Efficiency= 2/1.875
Efficiency= 1.07

Examples of 2nd Class Lever:

1. Wheel Barrow
2. Broom

Activity 1.1.1 Third Class Lever

This is my third class lever!

Calculations:
Ideal Mechanical Advantage (IMA)
IMA= Distance(effort force)/Distance(resistant force)
IMA= 8 Lego holes/ 17 Lego holes
IMA= 0.47

Ideal Effort Force to overcome the known Resistance Force
MA(mechanical advantage)=Force(resistance)/Force(effort)
 0.43 = 1.5 Newtons/ Force(effort)
Force(effort)= 3.5 Newtons

Actual Mechanical Advantage (AMA)
AMA=Force(resistance)/Force(effort)
AMA= 1.5 Newtons/ 3.5 Newtons
AMA= 0.43

Efficiency of the lever system
Efficiency= AMA/IMA
Efficiency= 0.43/0.47
Efficiency= 0.91

Examples of 3rd Class Lever:

1. Fishing pole
2. Tweezers

Activity 1.1.1 First Class Lever

This is my first class lever.

Calculate:
Ideal Mechanical Advantage (IMA)
IMA= Distance(effort force)/Distance(resistant force)
IMA= 13 Lego holes/ 13 Lego holes
IMA= 1

Ideal Effort Force to overcome the known Resistance Force
MA(mechanical advantage)=Force(resistance)/Force(effort)
1= 1.5 Newtons/ Force(effort)
Force(effort)= 1.5 Newtons

Actual Mechanical Advantage (AMA)
AMA=Force(resistance)/Force(effort)
AMA= 1.5 Newtons/ 1.5 Newtons
AMA= 1

Efficiency of the lever system
Efficiency= AMA/IMA
Efficiency= 1/1
Efficiency= 1

Examples of 1st Class Lever:

1. Seesaw- the folcrum is in the center of the effort force and resistance force
2. Elbow extension

My First Post: I'm Back For More

I am back for senior year! Kicking off my second year of engineering with Mr. Olson in the 6th period of Principles of Engineering. Welcome to my blog portfolio, have a nice day.

Besides taking apart and building things my greatest hobby is stenciling and graffiti. I use manila folders to create my stencils and I chase graffiti everywhere I go. Here is one of my favorite pictures I have made.

http://www.bladekingofgraf.com/