Download - Forging new generations of engineers. Gliders in Flight Stability for Straight and Level Flights
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Forging new generations of engineers
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Gliders in Flight
Stability
for
Straight and Level Flights
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GlidersLong Distance Fliers
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Gaining Altitude
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Balsa Glider?
Straight and Level = Maximum Distance
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3 axis movement
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Movement in Yaw
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Movement in Roll
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Movement in Pitch
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Static Stability
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Dynamic Stability
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Lateral Stability:Roll
High wing aircraft are naturally stabilizing.
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Lateral Stability:Roll
Low wing aircraft are naturally stabilizing.
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Lateral Stability:Dihedral
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Why does dihedral work?
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Why does dihedral work?
Weight
Uniform Lift
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Why does dihedral work?
Weight
Component of WeightCausing a Sideslip
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Why does dihedral work?
Induced Relative Wind
Higher AOA
Lower AOAHigher Lift
Lower LiftRollingMoment
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Lateral Stability:Types of Dihedral
No Dihedral
Straight Dihedral
Tip Dihedral
Polyhedral
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Movement in Yaw
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Directional Stability:Keel Effect
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Directional Stability:Weather Vaning
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Directional StabilityMoment Arms
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Directional Stability
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Movement in Pitch
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Avoiding the Stalling
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Weight and Balance
Center of Lift
Weight at Center of Gravity
Balanced, but easy to shift…
VERY nose heavy!
VERY tail heavy!
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Center of Gravity Range
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Questions?