Quadcopter (drone) and aerosol can: what they have in common

1. Step 1. Quadcopter (drone) — has part — Gyroscope. A MEMS gyroscope stabilizes flight.
2. Step 2. Gyroscope — is part of — V-2 rocket. A gyroscopic guidance system.
3. Step 3. V-2 rocket — is made of — Oxygen. The oxidizer is liquid oxygen.
4. Step 4. Oxygen — is used in — Oxygen concentrator. Oxygen.
5. Step 5. Oxygen concentrator — has part — Valve. They switch the columns.
6. Step 6. Valve — is part of — Aerosol can. A valve.

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