Gliders Flight Stability Aerospace EngineeringTM Unit 3 – Lesson 3.1 Glider Design, Construction and Testing Forging new generations of engineers Project Lead the Way, Inc. Copyright 2007

Gliders Flight Stability Stability for Straight and Level Flights Aerospace EngineeringTM Unit 3 – Lesson 3.1 Glider Design, Construction and Testing Gliders in Flight Stability for Straight and Level Flights Project Lead the Way, Inc. Copyright 2007

Gliders Flight Stability Aerospace EngineeringTM Unit 3 – Lesson 3.1 Glider Design, Construction and Testing Project Lead the Way, Inc. Copyright 2007

Gliders Long Distance Fliers Gliders Flight Stability Aerospace EngineeringTM Unit 3 – Lesson 3.1 Glider Design, Construction and Testing Gliders Long Distance Fliers Project Lead the Way, Inc. Copyright 2007

Gliders Flight Stability Aerospace EngineeringTM Unit 3 – Lesson 3.1 Glider Design, Construction and Testing Gaining Altitude Project Lead the Way, Inc. Copyright 2007

Gliders Flight Stability Aerospace EngineeringTM Unit 3 – Lesson 3.1 Glider Design, Construction and Testing Balsa Glider? Straight and Level = Maximum Distance Project Lead the Way, Inc. Copyright 2007

Gliders Flight Stability Aerospace EngineeringTM Unit 3 – Lesson 3.1 Glider Design, Construction and Testing 3 axis movement Project Lead the Way, Inc. Copyright 2007

Gliders Flight Stability Aerospace EngineeringTM Unit 3 – Lesson 3.1 Glider Design, Construction and Testing Movement in Yaw Project Lead the Way, Inc. Copyright 2007

Gliders Flight Stability Aerospace EngineeringTM Unit 3 – Lesson 3.1 Glider Design, Construction and Testing Movement in Roll Project Lead the Way, Inc. Copyright 2007

Gliders Flight Stability Aerospace EngineeringTM Unit 3 – Lesson 3.1 Glider Design, Construction and Testing Movement in Pitch Project Lead the Way, Inc. Copyright 2007

Gliders Flight Stability Aerospace EngineeringTM Unit 3 – Lesson 3.1 Glider Design, Construction and Testing Static Stability Project Lead the Way, Inc. Copyright 2007

Gliders Flight Stability Aerospace EngineeringTM Unit 3 – Lesson 3.1 Glider Design, Construction and Testing Dynamic Stability Project Lead the Way, Inc. Copyright 2007

Lateral Stability: Roll Gliders Flight Stability Aerospace EngineeringTM Unit 3 – Lesson 3.1 Glider Design, Construction and Testing Lateral Stability: Roll High wing aircraft are naturally stabilizing. Project Lead the Way, Inc. Copyright 2007

Lateral Stability: Roll Gliders Flight Stability Aerospace EngineeringTM Unit 3 – Lesson 3.1 Glider Design, Construction and Testing Lateral Stability: Roll Low wing aircraft are naturally stabilizing. Project Lead the Way, Inc. Copyright 2007

Lateral Stability: Dihedral Gliders Flight Stability Aerospace EngineeringTM Unit 3 – Lesson 3.1 Glider Design, Construction and Testing Lateral Stability: Dihedral Project Lead the Way, Inc. Copyright 2007

Gliders Flight Stability Aerospace EngineeringTM Unit 3 – Lesson 3.1 Glider Design, Construction and Testing Why does dihedral work? Project Lead the Way, Inc. Copyright 2007

Gliders Flight Stability Aerospace EngineeringTM Unit 3 – Lesson 3.1 Glider Design, Construction and Testing Why does dihedral work? Uniform Lift Weight Project Lead the Way, Inc. Copyright 2007

Gliders Flight Stability Aerospace EngineeringTM Unit 3 – Lesson 3.1 Glider Design, Construction and Testing Why does dihedral work? Weight Component of Weight Causing a Sideslip Project Lead the Way, Inc. Copyright 2007

Gliders Flight Stability Aerospace EngineeringTM Unit 3 – Lesson 3.1 Glider Design, Construction and Testing Why does dihedral work? Rolling Moment Lower Lift Higher Lift Lower AOA Induced Relative Wind Higher AOA Project Lead the Way, Inc. Copyright 2007

Lateral Stability: Types of Dihedral Gliders Flight Stability Aerospace EngineeringTM Unit 3 – Lesson 3.1 Glider Design, Construction and Testing Lateral Stability: Types of Dihedral No Dihedral Straight Dihedral Tip Dihedral Polyhedral Project Lead the Way, Inc. Copyright 2007

Gliders Flight Stability Aerospace EngineeringTM Unit 3 – Lesson 3.1 Glider Design, Construction and Testing Movement in Yaw Project Lead the Way, Inc. Copyright 2007

Directional Stability: Keel Effect Gliders Flight Stability Aerospace EngineeringTM Unit 3 – Lesson 3.1 Glider Design, Construction and Testing Directional Stability: Keel Effect Project Lead the Way, Inc. Copyright 2007

Directional Stability: Weather Vaning Gliders Flight Stability Aerospace EngineeringTM Unit 3 – Lesson 3.1 Glider Design, Construction and Testing Directional Stability: Weather Vaning Project Lead the Way, Inc. Copyright 2007

Directional Stability Moment Arms Gliders Flight Stability Aerospace EngineeringTM Unit 3 – Lesson 3.1 Glider Design, Construction and Testing Directional Stability Moment Arms Project Lead the Way, Inc. Copyright 2007

Directional Stability Gliders Flight Stability Aerospace EngineeringTM Unit 3 – Lesson 3.1 Glider Design, Construction and Testing Directional Stability Project Lead the Way, Inc. Copyright 2007

Gliders Flight Stability Aerospace EngineeringTM Unit 3 – Lesson 3.1 Glider Design, Construction and Testing Movement in Pitch Project Lead the Way, Inc. Copyright 2007

Gliders Flight Stability Aerospace EngineeringTM Unit 3 – Lesson 3.1 Glider Design, Construction and Testing Avoiding the Stalling Project Lead the Way, Inc. Copyright 2007

Gliders Flight Stability Aerospace EngineeringTM Unit 3 – Lesson 3.1 Glider Design, Construction and Testing Weight and Balance Center of Lift Balanced, but easy to shift… VERY nose heavy! VERY tail heavy! Weight at Center of Gravity Project Lead the Way, Inc. Copyright 2007

Center of Gravity Range Gliders Flight Stability Aerospace EngineeringTM Unit 3 – Lesson 3.1 Glider Design, Construction and Testing Center of Gravity Range Project Lead the Way, Inc. Copyright 2007

Gliders Flight Stability Aerospace EngineeringTM Unit 3 – Lesson 3.1 Glider Design, Construction and Testing Questions? Project Lead the Way, Inc. Copyright 2007