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A-Z glossary

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Air Brakes

Longitudinal shutters sometimes incorporated into the outer end of the leading edge of PATENT SAILS.They are opened by the shutter mechanism so as to break up air flow in heavy gusts, thus reducing the speed of rotation of the sails. Also known as skyscrapers.

Alternative terms

Term Language Region
Catchpole’s Sky Scrapers English
Skyscrapers English
Spoilers English