De quoi est fait dirigeable
A steerable powered balloon (Giffard, Zeppelin).
- Propeller — a pour partie. Air propellers.
- Internal combustion engine — a pour partie. Internal combustion engines.
- Hydrogen — utilise. Zeppelins were filled with hydrogen.
- Helium — utilise. After the Hindenburg — helium.
- Duralumin — est fait de. The frames of zeppelins.