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ratchet
- Definição1
- A device that allows rotation of a wheel or handle in one direction, but prevents its turning in the opposite direction. A ratchet assembly consists of a toothed wheel and a pawl. The pawl is a lever that rides over the teeth when the wheel is turned in one direction, but engages the teeth to prevent the wheel turning inthe opposite direction. Most ratchets have a method of reversing the pawl so the ratchet will work in either direction.
- Fonte1
- CRANE, Dale (ed.). Dictionary of aeronautical terms. 2nd ed. Renton: ASA, 1991.
- Fonte2
- ARAÚJO, João Richard Barcelos. Inglês técnico: técnicos em manutenção de aeronaves. [S.l]: [s.n.], [200-]. 100 p.
- Fonte3
- INTERNATIONAL CIVIL AVIATION ORGANIZATION. Manual of aircraft accident and incident investigation. Part III: investigation. 1st ed. Montreal, 2014. (Doc. 9756)
- Contexto
- Good designs also incorporate feedback that helps the maintenance technician know that something has been performed correctly. For example, an electrical connector that has a ratchet effect provides feedback to the maintenance technician when the installation is correct. If this ratchet effect is included in some connectors and not others, this could contribute to error. If a maintenance technician goes from a ratchet connector to a non-ratchet connector, the technician may over-tighten the second connector looking for the ratchet.
- Subárea1
- Engine
- Português
- catraca
- Imagem
A ratchet featuring gear (1) and pawl (2) mounted on base (3).
Fonte: http://en.wikipedia.org/wiki/File:Ratchet_Drawing.svg
