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Tetrahedron Kites

Tetrahedron Kites. By Christopher Quimbly . Project Overview. My kite will use tissue paper, straws, and string . 4 25’’ string and 4 45 ’’ string. What I’d Like To Learn. How good tetrahedron kites fly. And how to construct it . . Basics of Flight.

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Tetrahedron Kites

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  1. Tetrahedron Kites By Christopher Quimbly

  2. Project Overview • My kite will use tissue paper, straws, and string. • 4 25’’ string and 4 45’’ string.

  3. What I’d Like To Learn • How good tetrahedron kites fly. And how to construct it.

  4. Basics of Flight • The miracle of flight exists because man has the technology to oppose natural forces that keep all objects on the ground. Four forces affect an aircraft — two assist flight (thrust and lift), and two resist flight (gravity and drag). The important thing to note here is that when an aircraft is flying straight and level, all four of these forces are balanced, or in equilibrium. • Thrust is created by the engines. • Lift occurs because air flows both over and under the surface of the wing. • Drag opposes thrust. Although it mainly occurs because of air resistance as air flows around the wing, several different types of drag exist. • Gravity is actually a force of acceleration on an object. The Earth exerts this natural force on all objects. Being a constant force, it always acts in the same direction: downward. Thrust creates lift to counteract gravity. In order for an aircraft to take off, enough lift must be created to overcome the force of gravity pushing down on the aircraft. • A "G" is a measurement of force that is equal to the force of gravity pushing down on a stationary object on the earth's surface. Gravitational force actually refers to an object's weight (Force equals Mass times Acceleration, or F = ma.). An aircraft flying level at low altitudes experiences 1G.

  5. Basics of Flight • Apparent weight refers to how heavy something seems considering the current direction and magnitude of G-forces acting on it. In level flight, 1G is acting on the aircraft and the pilot—both weigh the same as they do when stationary. If the pilot makes a steep climb, the positive G-force temporarily acts on both the pilot and the aircraft, making them in essence heavier throughout the climb. Any sudden increase or decrease in acceleration brings about a change in apparent weight of an object. • Human bodies can withstand approximately 9 or 10 positive Gs or 2 to 3 three negative Gs for several seconds at a time. Exceeding positive G limits for longer than that causes blood to collect in the lower part of the body and torso. The brain and retinas receive less blood, and therefore less oxygen. Eventually, vision turns gray, followed by tunnel vision and pilot blackout. Excessive negative Gs have a similar effect, except that blood pools in the brain and upper torso. This causes the small capillaries in the eyes to swell, creating a redout effect.

  6. Types of Kites • Diamond Kites • •Box Kite • •Winged Box Kite • •Sled Kite • •Delta Kite • •Power Kites • Tetrahedron Kites

  7. Bird vs. Kite • Kites and birds are practically the same.

  8. Pictures

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