Question: The designers of the Horten H.XVIII also designed the world's first jet-powered flying wing known by what name?
Sentence (from "Horten brothers"): Although they had little, if any, formal training in aeronautics or related fields, the Hortens designed some of the most revolutionary aircraft of the 1940s, including the world's first jet-powered flying wing, the Horten Ho 229.
Relevant evidence: Yes