Computer and plumbing: what they have in common

1. Step 1. Computer — is used in — Lunar module. The Apollo Guidance Computer.
2. Step 2. Lunar module — has part — Liquid-propellant rocket engine. A descent engine.
3. Step 3. Liquid-propellant rocket engine — has part — Centrifugal pump. Turbopumps deliver the propellant.
4. Step 4. Centrifugal pump — is part of — Water tower. Filled by pumps.
5. Step 5. Water tower — is part of — Plumbing. Maintaining pressure.

Open Evothings