An underground airplane is proposed as a rapid transit system between large cities. A large-diameter tunnel is constructed and medium-size airplanes are operated at around 600 km/hr. The tunnel can be used also for storage and transportation of material, energy, and information.
Chichuu Hikouki No Aideia (Idea of Underground Airplane)
1992
3 pages
Report
Keine Angabe
Englisch
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