A Norwegian start-up is hoping its small electric-powered ducted-fan engine for unmanned air vehicles (UAVs) can spearhead a move up the weight class into commercial aviation applications.
The unmistakable silhouette of the McDonnell Douglas MD-11 is defined by the massive third engine piercing through its vertical stabilizer. While other trijets like theLockheed L-1011 TriStar tucked ...
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