In my simpleton mind, I cannot understand why we do not use more blimps for transporting goods. Seems engines and fuel could be done with solar, also seems like they could be automated. Is it simply not cost effective? Is it dangerous even though modern blimps use helium? Eli5.
In: Engineering
A few things.
1. They are quite vulnerable to the wind but cannot fly as high as the jet powered aircraft.
2. The balloon need to be quite large, and it as an issue. A FedEX blimp base would need to be massive.
3. They are too slow.
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