Joby CEO JoeBen Bevirt revealed the startup’s S4-T hybrid-powered eVTOL in a Nov. 7 post on X. The company has been working on an uncrewed hybrid-electric version of its S4 vertical takeoff-and-landing (VTOL) air taxi, developed in partnership with L3Harris Technologies, targeting the defense market.
According to Graham Warwick, Joby Aviation appears to have powered up this new aircraft, which integrates turbine hybrid power for military uses. The aircraft's image, shared by Joby’s CEO, shows a design focused on versatility and technological innovation.
The S4-T model signifies a step forward in the development of advanced autonomous air mobility solutions, blending electric propulsion with traditional turbine engines to meet the demanding requirements of defense applications. The company’s approach involves leveraging hybrid technology to extend operational range and flexibility.
This move is part of Joby's broader effort to diversify its portfolio beyond commercial urban air mobility, aiming to serve military and government needs with innovative aircraft solutions. The company’s ongoing advancements in electric and hybrid propulsion are closely watched by industry analysts and stakeholders interested in the future of aerospace technology.

