Since emerging from stealth in 2021, Crossville, Tennessee-based Whisper Aero has continued to operate behind the scenes, only recently unveiling its ultraquiet jet concept. But the startup is stepping up development of its proprietary propulsion system—one it claims, fittingly, reduces aircraft noise to a whisper.
Whisper on Monday held a ceremony to introduce its new flight test center in Crossville, an 8,000-square-foot hangar backed by a $1.2 million appropriation from the state of Tennessee. Construction on the facility, co-located at Crossville Memorial Airport (KCSV), is expected to begin later this year and be completed by early next year.
