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The roller coaster seat shown opposite is fitted with a safety harness, to securely hold an individual when the roller coaster is in use - Leaving Cert Engineering - Question i - 2015
Question i
The roller coaster seat shown opposite is fitted with a safety harness, to securely hold an individual when the roller coaster is in use. Identify a suitable mechani... show full transcript
Worked Solution & Example Answer:The roller coaster seat shown opposite is fitted with a safety harness, to securely hold an individual when the roller coaster is in use - Leaving Cert Engineering - Question i - 2015
Step 1
Identify a suitable mechanism which will ensure that the safety harness remains in a closed position when in use.
Answer
A suitable mechanism to ensure that the safety harness remains in a closed position could be a 'ratchet and pawl' system. This mechanism allows for the gradual tightening of the harness, preventing it from loosening during the roller coaster ride. An electromagnetic switch could also be used, which would keep the harness securely locked in place until it is intentionally released.
Step 2
Outline two ways in which the steel structure of the roller coaster seat may be protected from corrosion.
Answer
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Galvanising: This process involves coating the steel with a layer of zinc, which acts as a barrier against moisture and oxygen, thus preventing rust.
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Painting: Applying a protective paint layer on the steel surface can shield it from environmental factors that cause corrosion. The paint creates a barrier that prevents water and air from reaching the metal.