Page 492 - PPL-engelsk 2025
P. 492
Principles of flight
5.7.5.2 Stalling
An aircraft with high directional stability but poor lateral stability can get out of
control in tight turns and continue in a stalling spiral in the same direction.
Increased bank gives more bank and more bank, and the nose drops.
If the pilot does not exercise due care, the aircraft will end up in a spiral dive at
a tremendous speed.
It is important to know the difference between a spiral dive and a spin.
In a spiral, the speed is high and increasing, and the G-forces are high when
trying to maintain altitude. Care must be taken not to overload the aircraft
during recovery.
Recovery from a spiral dive
1) Throttle at idle.
2) Wings horizontal before pulling the elevator control back.
3) Pull gently the elevator control back to recover from a dive.
If you are trying to recover from a roll and
a dive at the same time, the lowered wing
must produce more lift than the raised
wing.
This will expose the lowered wing to a
greater force, and the aircraft can only
withstand the specified maximum loads
in one of the axis at a time.
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Flight Theory PPL(A)(UL)/LAPL Henning Andersen, Midtjysk Flyveskole© 2025 492
