Principles of Engineering: 2011

During this challenge are group earned a total of 10 achievments

Define the Problem and Brainstorm solution-The problem was that we had to create a cardboard canoe with duct tape here are twenty examples of our ideas

1. Flat bottom canoe

2. Make it fast

3. Make it durable

4. Make it with high walls

5. V-bottom boat

6. Outriggers

7. Fins

8. Paddle

9. Duct tape rope

10. Thick walls

11. U shaped hulls

12. Seat

13. Supports on inside

14. Thick paddle

15. Put Outriggers closer to inside

16. Make walls thick

17. Put lightest person in the boat

18. Have people push her

19. Have ropes for people to pull her

20. Make it look nicely done

Criteria & Constraints - List or reference the specified Criteria and Constraints you're designing for. List at least one implied criteria. List at least three implied contsraints.

1. We are going to try to create a V bottom boat with a outriggers for support

2. Also we were going to try to create a V shaped hull with no outriggers

3. Lastly we were going to try to create a boat with flat bottom boat and a paddle

Sketch Ideas - Draw 3 different sketches for possible designs. Label at least 3 key features for each sketch. Describe the feature's functionality so a viewer understands why the called out feature is important.

We have created three different sketches for are prototypes

Prototype Ideas - Craft physical prototypes (models) of each of your three sketches. Use a notecard or post it note to call out at least one key feature on each model. Post the images to your blog and describe the key feature that you've pointed out on each.

We also have created three different prototypes for are ide of are canoe

Select an Approach - Generate feedback (+, change, ?, !) and make a decision matrix regarding your sketches/prototypes. Specify the approach you've chosen and justify your selection.

V shaped hull with outrigger

n Good idea but would be difficult to creat the outriggers

n Would float because of support but need different idea

V shaped canoe

n Good idea but no support to keep you from being tipped over

Flat bottom canoe

n Would dispense the weight and would float and be the best support

Build It! - Build your watercraft. Document it with a presentable photo.

n We created a V bottom boat and decide to create fins instead of outriggers

V-Bottom - Earn this by building a non-flat bottom

n Are design of are boat it a V-shaped bottom with fins on the outside for support

Feedback - Generate ten items of feedback for your effort (from the design/build process and/or the actual product). Make sure you include at least one item of feedaback in each of our four feedback areas (+, change, ?, !)

n It floated and was a good idea

n The fins needed to be in a different position because it got in the way of rowing

n We could have made it better support

n The fins did not do much because they were to small

n The size was good

n The paddle worked and the size was good

n We needed to displace the water evenly

n We needed to come up with a better way of getting across

n The fins needed to be bigger

n And we needed to plug all of the holes in are boat on the outside

How Low Did You Go? - How low in the water did your canoe sit (roughly)? Was it suprising how little your boat went down in the water? What is the unit weight of water in pounds? How much did your pilot weigh (roughly)? Use math to help explain the depth that your boat sat in the water.

Our boat went at least a foot deep into the water. It was not surprising how far it went in because I was expecting ti to go in that deep. 120 lbs per 2 ft of the boat. She weighed about 80-90 lbs.

• Redesign - If we were to do another Carboard Canoe race next semester, what would you build? Draw from everything you experienced in your class and propose the most competative solution. Include a sketch with key features and dimensions labeled.

If we were to build another canoe we would build a flat bottom boat with wide bottom so it would float better and then if we had enough duct tape we would create a duct tape rope to get us across faster than last time.