Principles of Flight

When a fluid, such as air or water, to stay attached to a rounded (convex) surface, this phenomena is called?

• Circular Surface Effect

• Fluid Cling Effect

• Contour Effect

• Coandă Effect

 When a strong stream of air is blown from behind the bottle, what will happen to a lit candle?

• It will glow brighter.

• It will dim.

• It will blow out.

• Nothing will happen.

Which one of these types of airflow represents smooth airflow?

• Laminar

• Turbulent

Wind blown at a suspended sphere will?

• Go in different directions.

• Continue in the same direction.

• Wrap around the sphere.

• Bounce off the sphere.

Which one of these forces makes a plane go up?

• Lift

• Weight

• Drag

• Thrust

Which one of these forces makes a plane go forward?

• Lift

• Weight

• Drag

• Thrust

Which one of these forces pulls a plane down?

• Lift

• Weight

• Drag

• Thrust

Which one of these forces pulls a plane backward?

• Lift

• Weight

• Drag

• Thrust

Wider wings on an airplane does what?

• Increases Lift

• Increases Thrust

• Increases Drag

• Increases the Angle of Incidence

Positive Dihedral Angle is when the wings are?

• Bent Upward

• Bent Downward

• Slanted Forward

• Slanted Backward