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Forging new generations of engineers. Gliders in Flight Stability for Straight and Level Flights.

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Presentation on theme: "Forging new generations of engineers. Gliders in Flight Stability for Straight and Level Flights."— Presentation transcript:

1 Forging new generations of engineers

2 Gliders in Flight Stability for Straight and Level Flights

3

4 Gliders Long Distance Fliers

5 Gaining Altitude

6 Balsa Glider? Straight and Level = Maximum Distance

7 3 axis movement

8 Movement in Yaw

9 Movement in Roll

10 Movement in Pitch

11 Static Stability

12 Dynamic Stability

13 Lateral Stability: Roll High wing aircraft are naturally stabilizing.

14 Lateral Stability: Roll Low wing aircraft are naturally stabilizing.

15 Lateral Stability: Dihedral

16 Why does dihedral work?

17 Weight Uniform Lift

18 Why does dihedral work? Weight Component of Weight Causing a Sideslip

19 Why does dihedral work? Induced Relative Wind Higher AOA Lower AOA Higher Lift Lower Lift Rolling Moment

20 Lateral Stability: Types of Dihedral No Dihedral Straight Dihedral Tip Dihedral Polyhedra l

21 Movement in Yaw

22 Directional Stability: Keel Effect

23 Directional Stability: Weather Vaning

24 Directional Stability Moment Arms

25 Directional Stability

26 Movement in Pitch

27 Avoiding the Stalling

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

29 Center of Gravity Range

30 Questions?


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