Giant hot air balloon for lift + 4 rotors for steering? It wouldn't be fast, but... | Hacker News

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xnx 23 days ago | parent | context | favorite | on: Lift Challenge

Giant hot air balloon for lift + 4 rotors for steering? It wouldn't be fast, but it might work [in low wind conditions].

echoangle 23 days ago | [–]

https://www.darpa.mil/research/challenges/lift/rules

Forbidden in 3.7

mhb 23 days ago | [–]

Rules exclude that approach.

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