DARPA Pays Half As A Conventional Helicopter Wins The Lift Challenge At 3.84:1 — DroneXL
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📌 **What You’ll Learn**:
Avidrone Inc. won the DARPA Lift Challenge on Sunday with the Katana, a conventional single-main-rotor helicopter that weighed 13.3 kg (29.3 pounds) and hauled 51 kg (112.4 pounds) of cast iron ar...
