WordReference Random House Unabridged Dictionary of American English © 2026
split′ flap′, [Aeron.]
- Aeronauticsa flap that is located on the under surface of the trailing edge of an aircraft wing and that splits away from the wing structure when rotated downward, producing an increase in lift or drag or both. Cf. landing flap.
- Aeronauticsa flap that is located on the upper surface of the trailing edge of an aircraft wing and that acts as a spoiler when rotated upward.
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'split flap' also found in these entries (note: many are not synonyms or translations):
