# glide angle

from Middle : : Aerospace Technology

To investigate glide angle, experiment with a straw rocket.

Design a rocket and experiment with angle-of-attack by launching it at different angles and predicting the distance traveled. Since the rocket is simply a glider, it is in a steady (constant velocity and no acceleration) descent; it loses altitude as it travels.

The glider’s flight path is a simple straight line, shown as the inclined red line in the figure. The flight path intersects the ground at an angle a called the glide angle. If we know the distance flown d and the altitude change h, we can calculate the glide angle using trigonometry: tan(a) = h / d where tan is the trigonometric tangent function.

The ratio of the change in altitude h to the change in distance d is often called the glide ratio.

How will weight distribution and size affect the rocket?

Design 3 different rockets using the supplies. Use the launcher to gather the information needed to fill out the form. Keep track of the rocket that traveled the farthest.

What factors affected the distance the rocket traveled?

Design and build the rocket using the clay to form the nose cone, the cardboard to create the fins and the straw will serve as the body tube.

Predict how far you think your rocket will travel. Use the launcher and launch your rocket at the designated angles. With each launch, measure and record the distance. Complete the evaluation of your prediction and discuss what you could have done to make your rocket go farther.

template – introduction

• So, How Far Did It Go?

Supplies:
1. Straws 2. Index Cards or colored construction paper 3. Clay 4. Scissors 5. Clear Tape 6. Ruler 7. Paper 8. Pencil 9. Pitsco Straw Launcher 10. Craft Paper (optional)

Specifications
1. 10cm to 20 cm long 2. 2 fins to 5 fins 3. Clay nose cone no bigger then 2 cm in diameter

Teacher directions:
Place in a numbered plastic or paper bag the following items: 1. Straw
2. 1 index card or construction paper 3. 2cm wide round ball of clay 4. pair of scissors 5. a ruler
6. roll of tape 7. 2 white 8 1⁄2’x 11’ blank paper
a. 1 for drawing b. 1 for graphing

Directions:

• 1. Hand out pre-sorted materials to the students that have been placed into groups of 3 or four.
• 2. Have student watch straw video and follow along with Dr. Zoon.
• 3. 1st the student should come up with a drawing of their rocket. Each group member can design his or her own idea. Take paper and pencil and draw the straw. Make sure they meet the specifications above. Then draw 3 different types of fins. Select which fin your group wants to use.
• 4. Draw the winning fin to the sketch. Draw them at the bottom of the rocket.