Although the founders and team still believe in the need/desire for quiet supersonic flight and supersonic drones for the US Department of Defense, without further customer support for either concept, the company cannot sustain the cash needs to make further advancements.
It sounds like the company was ultimately unable to bridge what's often referred to in defense tech as 'the valley of death' - the period between R&D and commercialization.
Without further government support for its near-term supersonic UAV development, Exosonic can no longer sustain the capital required to further advance the concept.
Exosonic was founded in 2019 by Norris Tie, a propulsion engineer who cut his teeth at primes like Northrop Grumman and Lockheed Martin; at the latter company he reportedly worked on the low-boom X-59 aircraft for NASA.
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