Accessories

March 2019 Issue

Vortex Generators: Got STOL? Think Twice

VGs are tiny vortices that keep airflow over the wing laminar at lower speeds, reducing stall speed and Vmc. The $2500 investment may be worth it.

When things go south and you have to park an airplane in an unintended location, touching down at a lower stall speed means less energy to dissipate in the crash. Energy is a squared function, so reducing impact speed, even a little, pays big dividends. In a twin, reducing Vmc means reducing the risk of an uncontrolled roll following engine failure. A crash right side up means a far higher chance of survival than smacking the ground inverted.

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