Civilization manualBook 1: From Bare Hands to Steam and Electricity765 entries · 23 phases · 100 years
The Island
Phase 22 — The propeller airplane  /  About year 72
22.18

All-metal aircraft with stressed skin

the aluminium skin itself carries the load: faster, stronger, and it does not rot

MakingYear 72Stands on 365 earlier

AWhat it needs

Needs 365 other products in all, 4 of them directly.

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