Propelled Vehicle

Purpose:

• Construct a vehicle that will move forward on its own power.

Directions:

• Design a vehicle that will begin at rest, but, with a designed trigger, will move forward.

• Project Requirements:

• Self-propelled vehicles must move 5 meters

• Gravity vehicles must move 7 meters

• All vehicles must start in the stop position

• A trigger may be used to start the vehicle, but the trigger itself cannot push/force the vehicle forward.

• The vehicle must not leave the ground.

• Max. weight of all components 500gm.

• Vehicle must achieve 2 additional design challenges.

• Design Challenges

• 1)Distance: 10m

• 2)Reduce weight: Under 150gm

• 3)Speed: 1.7 m/s (5m in 3 seconds)

• 4)Strength: Pull or Carry HALF the vehicle’s own weight (50gm min.)

• 5)Double UP: (First test)

• Twice as fast

• The vehicle’s own weight (Twice half)

• Twice the strength

• Twice the distance

• Include Relevant Activity Photos

• 2 photos from construction

• 2 photos from trials

• 1 photo of final design

• 1 video of final test.

• Include a photo/graphic of:

• The original design plan

FINAL

• The final design plan

• Evaluation (7 questions)

• Design

• 1) Describe the engineering aspects of your original design. (How was it powered? Why did you pick your design?)

• First we decided to create a rubber band vehicle that had a propeller on the back. The propeller was supposed to go along with the rubber band so that the vehicle could move. However in the process we decided to change to a balloon vehicle since it was difficult to find a propeller we wanted. This design as total of four wheels made of CDs. The wheels are connected with rolling color pencil containers&chopsticks attached to a piece of cardboard. A ballon is attach on the back with a big straw attached to it so that we could blow air into it.

• 2)How did your vehicle perform in the trials?

• In the first trial, the ballon and the wheels were not stable so we had difficulty moving our vehicle forward. However In the next trial we made some changes making the wheel really strong and gluing the straw&ballon on the vehicle with super glue&glue gun. Afterwards it went over 7 meters and it was a complete success. On our final design we succeeded to pass 10meters.

• 3) Describe how you changed your original design based on your trial results.

• Final Testing

We changed our vehicle into a ballon vehicle and we used a big straw to blow in more air into the ballon. Also we added more bottle caps on the CD wheels so that they could go stably, We added a few chopsticks so that the ballon did not touch the ground. 4)How did your vehicle perform in the Final

• In the final, we tried two times and the first time it went over a little bit over 5m but it was stopped because it was stuck. In the second time in the final we succeeded over 10m.

• 5)How did your vehicle perform when comparing the final and trial results?

• During the trial, the vehicle was unstable and it was weak. It was easily broken and the wheels were not complete. The balloons kept on falling off on our trials. However fixing all of our mistakes, we were able to succeed.

• 6) Was your vehicle able to achieve the two design challenges?

• Learned Outcomes

Yes, it was 95.1g and it went over 10ms. 7)What design changes would make for your vehicle to perform better next time?

• Next time I will try to make a vehicle with a rubber band because we failed to make it this time. I will use Haru's vehicle as an example and back a rubber band vehicle.