Emily's Second Draft Vehicle vs. Shivani's Second Draft Vehicle
No point at the head of the car Point at the head of the car
(making a little more air resistance) (making a little less air resistance)
Very sturdy Not the best when it comes to strength... pretty weak
Weight more Weight less
Uses rubber bands for source of Uses balloon for source of force
force (making it like a slingshot)
Why this matters??? (Car 1 means Emily's Draft
Vehicle and Car 2 means Shivani's Draft Vehicle)
Since Car 2's head is not flat, it will have less air resistance than Car 1.
Car 1 is no doubt sturdier than Car 2, but does it matter if we have a sturdy
car or a vehicle just strong enough to hold a balloon?
Car 2 weighs less than Car 1 does, so Car 2 will experience less friction
Car 1 uses rubber bands while Car 2 uses a balloon as a source of power.
I am not sure if the balloon will make the car go in a straight or semi-straight
direction and I do not want to take a chance. For Car 1, Emily and I could
aim it so that when we let the rubber bands go, the car will move in a straight
line. Making the vehicle go in a straight-as-possible line is not only because
our requirements for this project is to keep the vehicle in a two tile width, but
because the shortest distance is a straight line. If our car goes in a curve, it will
lose the power from the rubber bands/balloon and may not end up to meet the
required distance.
Friday, November 16, 2012
Building
We started building our prototypes today. After realizing my first draft of our scooter would not work (since it would have no wheels,
which would make to vehicle have A LOT of friction), we started building the
car in draft #2. So far, it is really flimsy, but I am hoping that will not
matter since it only needs to hold a balloon… hopefully the balloon doesn't blow all over the place and take the vehicle with it! Right now it’s too early
to find out... this vehicle could either work fantastically or be an epic fail.
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