Presentation Name Stability for Straight and Level Flight

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Presentation transcript:

Presentation Name Stability for Straight and Level Flight Course Name Unit # – Lesson #.# – Lesson Name Gliders in Flight Stability for Straight and Level Flight

Glider in Flight

Gliders As Long Distance Fliers

Gaining Altitude Gliders do not have an engine Gliders use rising air to gain altitude

Balsa Glider Flight Straight and Level = Maximum Distance

Tree Axis of Movement

Movement in Yaw

Movement in Roll

Movement in Pitch

Static Stability

Dynamic Stability

Lateral Stability: Roll High wing aircraft are naturally stabilizing

Lateral Stability: Dihedral

Why Does Dihedral Work?

Why Does Dihedral Work? Uniform Lift Weight

Why Does Dihedral Work? Weight Component of Weight Causing a Sideslip

Why Does Dihedral Work? Rolling Lower Lift Moment Higher Lift Lower AOA Higher AOA Induced Relative Wind

Lateral Stability: Types of Dihedral No Dihedral Straight Dihedral Tip Dihedral Polyhedral

Movement in Yaw

Directional Stability: Keel Effect

Directional Stability: Weather Vaning

Directional Stability: Moment Arms

Directional Stability

Movement in Pitch

Avoiding the Stalling

Weight and Balance Center of Lift Weight at Center of Gravity Balanced, but easy to shift… VERY nose heavy! VERY tail heavy! Weight at Center of Gravity

Center of Gravity Range