Team+5

=Flickering Fireflies= =Team 5= Seth Hicks,Shayla Washington Hannah L.,Jackie C.,Maddy G.

= = = = = = =Parts of a Rocket=



The shock cord is what is used to tie the nose cone to the body of the rocket, so that it can come off the rocket, but not get lost.
1. __Nose cone__: designed to provide a smooth flow of air around the rocket body

2. __Launch Lug__: A thin tube which guides the rocket on the launch rod until sufficient speed has been reached for the fins to become effective.

3. __Parachute__: A thin plastic or cloth chute used to slow the descent of the rocket. sometimes replaced by a streamer or other recovery device.

4. __Recovery Wadding__: Insures that the parachute will be properly ejected and protects the chute from the heat of the ejection charge.

5. __Engine__: A solid propellant contained in a sturdy casing.

6. __Removable solid Rocket Engine__: Glued inside the body tube to hold the engine in the proper position and to absorb the thrust of the engine

7. __Body Tube__: The basic structural unit of the rocket; determines the design and function of all other parts of the rocket

8. __Fins__: guide the rocket on a straight flight and gives the essential stability for true flight



** The Four Forces Affecting Flight: ** Newton’s Laws of Motion 1. The Law of Inertia -Every object in a state of uniform motion tends to remain in that state of motion unless an external force is applied to it. 2. The relationship between Mass, Force and Acceleration -Force x Mass = Acceleration 3. Actions and the Reactions -For every action, there is an equal and opposite reaction

The 4 Forces are all __vector quantities__- affect magnitude (power)and direction of rocket · Weight - the collective mass of all rocket parts; it acts as a center of gravity to the rocket · Thrust –moves rocket through air and space; acts along the length of the rocket and goes through the center of gravity; used to overcome weight 2 are aerodynamic forces - Forces produced while the rocket if flying and act on it while airborne · Lift – a side force that is perpendicular to the direction of motion and is used to stabilize/ control the direction of flight · Drag- Opposite of the direction of motion =NEWTON'S FIRST LAW OF MOTION=

Sir Isaac Newton first presented his three [|laws of motion] in the "Principia Mathematica Philosophiae Naturalis" in 1686. His first law states that every object will remain at rest or in uniform motion in a straight line unless compelled to change its state by the action of an external force. This is normally taken as the definition of **inertia**. The key point here is that if there is **no net force** resulting from unbalanced forces acting on an object (if all the external forces cancel each other out), then the object will maintain a **constant velocity**. If that velocity is zero, then the object remains at rest. And if an additional external force is applied, the velocity will change because of the force. The amount of the change in velocity is determined by Newton's [|second law] of motion. There are many excellent examples of Newton's first law involving aerodynamics. The motion of an [|airplane] when the pilot changes the throttle setting of the engine is described by the first law. The motion of a [|ball] falling down through the atmosphere, or a [|model rocket] being launched up into the atmosphere are both examples of Newton's first law. The motion of a [|kite] when the wind changes can also be described by the first law. We have created separate pages which describe each of these examples in more detail to help you understand this important physical principle. =NEWTON'S SECOND LAW OF MOTION= NEWTON'S SECOND LAW IS THE MORE MASS THE MORE IT APPLIES FORCE ON THE OBJECT Sir Isaac Newton first presented his three [|laws of motion] in the "Principia Mathematica Philosophiae Naturalis" in 1686. His second law defines a **force** to be equal to the change in **momentum** with a change in time. Momentum is defined to be the mass **m** of an object times its [|velocity] **V**.

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Sir Isaac Newton first presented his three [|laws of motion] in the "Principia Mathematica Philosophiae Naturalis" in 1686. His third law states that for every action (force) in nature there is an equal and opposite reaction. In other words, if object A exerts a force on object B, then object B also exerts an equal and opposite force on object A. Notice that the forces are exerted on different objects.

For aircraft, the principal of action and reaction is very important. It helps to explain the generation of [|lift] from an airfoil. In this problem, the air is deflected downward by the action of the airfoil, and in reaction the wing is pushed upward. Similarly, for a [|spinning ball,] the air is deflected to one side, and the ball reacts by moving in the opposite direction. A **jet engine**also produces [|thrust] through action and reaction. The engine produces hot exhaust gases which flow out the back of the engine. In reaction, a thrusting force is produced in the opposite direction.