Model Rocketry Titan Phase 1

Laws of Motion First Law — An object at rest tends to stay at rest unless moved by a force An Object in motion tends to remain in motion unless stopped by a force. Second Law — Force equals mass times acceleration F=MxA Third Law — For every action there is an equal and opposite reaction 2Titan Phase

Acceleration The rate of change in Velocity with respect to time How fast something is traveling after a specific period of time The speed of an object after a time interval 3Titan Phase

Three Axis of Movement 4Titan Phase

Three Axis of Movement AxisMovement LongitudinalRoll LateralPitch VerticalYaw 5Titan Phase

Model Rocket Aerodynamics Model is static on the launch pad – Newton’s First Law (Object at rest) Model is dynamic when it lifts off – Newton’s First Law (Object in motion) Gravity pulls rocket towards center of the Earth while thrust from rocket motor pushes rocket away 6Titan Phase

Forces of Flight Same as for an Airplane—Just reapplied – Lift – Thrust – Drag – Gravity Center of Gravity – Exact spot where all mass is balanced Center of pressure – Aerodynamic force created when air moves past rocket Titan Phase7

Rockets in Flight A rocket that is stable will fly well Unbalanced rockets will fly erratically and unpredictably All of Newton's laws apply directly to rockets in flight 8Titan Phase

Laws Applied to Rockets 1 st law: Rocket sits “still” on launch pad or move through the air 2 nd law: – Force from exhaust gases creates thrust to push the rocket – Acceleration depends on amount thrust verses weight of rocket 3 rd law: Rocket pushes away from gases as gases push away from rocket 9Titan Phase

What’s Been said Newton’s laws of motion Dimensions and properties of a rocket Forces of flight upon a rocket Gravity is the force that attracts objects 10Titan Phase

Review 11Titan Phase

Good ‘Ol Newton A. An object at rest1. Newton’s 1st Law of Motion 2. Newton’s 2nd Law of Motion 3. Newton’s 3rd Law of Motion B. F=MA C. Action produces an Opposite Reaction 12Titan Phase

Identify the Axis 13Titan Phase

Match the terms A.Point where the mass is perfectly balanced B.Rate of change in Velocity C.Focus of aerodynamic forces 1.Center of Pressure 2.Center of gravity 3.Acceleration 14Titan Phase

Thoughts to Ponder What is the easiest way to move the Center of gravity Forward? What is the easiest way to move the Center of Pressure backward? 15Titan Phase