experimental design—wing placement by: patrick doornbos, ryan diepenhorst, aaron

8/14/2019 Experimental DesignWing Placement by: Patrick Doornbos, Ryan Diepenhorst, Aaron

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Experimental DesignWing PlacementBy: Patrick Doornbos, Ryan Diepenhorst, Aaron Goodyke

Question?: Will the placing of the wings affect the rocket's distance?

Hypothesis: We think that if the wings are placed in the back of the rocket pointing straight up, it willtravel a farther distance.

Controlled Variables:-size of rocket

-amount of air pressure

-weight-shape of rocket

-amount of water in body/nose-cone

Materials:

-1 two liter plastic bottle(with cap)-1 20 oz. plastic bottle(with cap)

-duct tape-triangle shaped pieces of cardboard(__x__)

-protractor

-ruler

Procedure(s):Wings placed in the middle(curved sideways at 38 or 28 degrees)

1)Fill the 2 liter bottle with 750 ml of water, and the 20 oz. bottle with 150 ml of water(put the caps

back on when finished!)2)Draw three lines along the 2 liter bottle going up and down at 90 degrees(they should be placed at

3.5 inches away from each other circling the bottle). Also, the lines should stretch between the two

small bumps along the bottle(5 cm from bottom, 10 cm from the cap)

3)At the top of each line(5 from bottom, 10 cm from top) is where the tip of each triangular wing willreside

4)What you have so far is the control rocket without the wings(will be referred to as the Control

Rocket)

5)The angle of the wing is 38 or 20 degrees from the tip of the cardboard triangles(depending on what

is being tested) so mark a line where the wing will be placed, and use a protractor to get that angle and

double check if it is right

6)Each of the cardboard wings should face away, or point up from the bottle7)Use duct tape to secure the wings in that angle(the tip of each wing should be pointing towards thebottom of the bottle)

8)Secure the two bottles together(bottom to bottom, or the tops should be facing away from each other)

using duct tape

9)Test the rocket for distance


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Wings placed in the middle pointing up

1)Build the Control Rocket as described above.

2)The cardboard wings should be placed along the 90 degree lines using duct tape

3)The tops should be facing outward, and the tip pointing towards the bottom of the bottle(a.k.a facing

straight out [no angle])

4)Follow steps 7-8 from above

Wings placed at bottom pointing up

1)Build the Control Rocket...EXCEPTstep 3

2)The tip of the cardboard wings should be located at the bottom bump in the bottle(12 cm from the

bottom of the 2 liter[about the middle of the 2 liter])

3)The cardboard wings should be placed along the 90 degree lines using duct tape

4)The top of the wings should face outward

5) Follow steps 7-8 from above

Data:

Conclusion: We conclude that if the wings are placed in the middle with the tip pointing up, it willadvance farther after being launched. This is proven because the average distance was farther than that

of the other placements. Because the wings placed near the bottom also flew far, it would seem that ifthe wings were placed in between the bottom and the middle(no angle) the rocket would fly about thesame distance if not farther.

Pictures:38 degree angle

Red line=bump(5 cm)

1 2 3 4

50

55

60

65

70

75

80Avg Distance of Rockets

Column G

Wing Placement

Distance

Distance of Rockets with different wing placement

Type of P la ceme nt Trial 1 Trial 2 Trial 3 Trial 4(Optional) Trial 5(Optional ) Ave rage Dist ance(met ers)[1]Wings at middle w/ angle 30 72 60 54[2]Wings at middle(straight) 55 85 80 80 80 76[3]Wings at middle(smaller angl 60 60 60 60[4]Wings at bottom(straight) 70 60 75 60 72 67.4

Source: Patrick Doornbos, Ryan Diepenhorst, Aaron Goodyke


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Middle Pointing up

Bottom Pointing up

experimental design—wing placement by: patrick doornbos, ryan diepenhorst, aaron

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