Hypersonic flight is one of the key leap ahead technologies suggested as a way to keep the US ahead of its competitors over the next 30 years, as called out by top defense and Air Force leaders in recent speeches. Indications are the technology is getting more attention and is closer than ever. The Air Force Scientific Advisory Board, in a January release, revealed the results of a yearlong exploration of the feasibility of useful hypersonic flight. It determined that, based on a survey of advances in propulsion, aerodynamics, materials, and structures, a "tactical-range hypersonic strike weapon has substantial operational utility in projected anti-access, area-denial (A2/AD) environments and can be fielded for use in the 2025 timeframe." In a study abstract, the SAB said that hypersonic weapons would "place defensive challenges on any potential adversary."
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