Supersonic air intake and boyle’s air pump: what they have in common

1. Step 1. Supersonic air intake — is part of — Ramjet. It slows the oncoming flow and compresses the air.
2. Step 2. Ramjet — uses — Compressed air. The air is compressed by the oncoming flow.
3. Step 3. Compressed air — is used in — Jackhammer. Compressed air.
4. Step 4. Jackhammer — has part — Piston. A percussion piston.
5. Step 5. Piston — is part of — Boyle’s air pump. A plunger.

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