Abstract: In this paper, we present a novel theoretical framework for online adaptation of Control Barrier Function (CBF) parameters, i.e., of the class $\mathcal{K}$ functions included in the CBF ...

Bell and Lockheed built the X-22A around four tilting ducted fans, aiming for a compact transport that could lift off vertically, fit on ships without folding wings, and transition smoothly into ...

One of 12 Shield AI V-BAT VTOL UASs acquired by the Royal Netherlands Navy undergoing operational testing aboard Zr. Ms. Johan de Witt amphibious assault ship during Exercise ‘Cold Response 2026'.

Bell Textron has completed the Critical Design Review for DARPA’s SPRINT (Speed and Runway Independent Technologies) X-Plane program, and the aircraft has officially received the X-76 designation. The ...

The realm of aerospace technology is experiencing a revolutionary shift, particularly with the emergence of high-speed vertical take-off and landing (VTOL) aircraft. Among the newest developments is ...

Abstract: The Vertical Take-Off and Landing (VTOL) system is a highly nonlinear system operating in severe ambient conditions, reflects the attention of the control engineering community. Robust ...

The U.S. Army is advancing efforts to modernize its unmanned aircraft capabilities to support multidomain operations through the Group 4+ Short/Vertical Takeoff and Landing, or S/VTOL, Challenge, ...

As the Army accelerates its transformation, it also faces significant challenges from aging platforms and evolving battlefield dynamics. In response, the Portfolio Acquisition Executive (PAE) Maneuver ...

The next phase of Bell’s X-planes is on the horizon. The aviation company has just completed the Critical Design Review for the U.S.’s Defense Advanced Research Projects Agency (DARPA), underneath its ...

DARPA has assigned the designation X-76 to the Speed and Runway Independent Technologies (SPRINT) project, a Bell proof-of-concept technology demonstrator for a high-speed tiltrotor. DARPA (Defense ...