Ramjet and elevator: what they have in common

1. Step 1. Ramjet — uses — Compressed air. The air is compressed by the oncoming flow.
2. Step 2. Compressed air — is used in — Supercharger. It forces air into the cylinders.
3. Step 3. Supercharger — has part — Belt drive. Belt-driven from the crankshaft.
4. Step 4. Belt drive — has part — Pulley. The belt wraps around pulleys.
5. Step 5. Pulley — is part of — Elevator. The rope runs over a pulley.

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