CL-227 Sentinel VTOL UAV

The Canadian-built CL-227 Sentinel was a vertical takeoff and landing (VTOL) unmanned air vehicle (UAV). Proposed missions for the Sentinel included target designation, reconnaissance, attack warning, electronic intelligence (ELINT) and electronic countermeasures (ECM).

Nicknamed the "Peanut" because of its shape, the Sentinel was designed to minimize its radar, acoustic and infrared (IR) signatures. In the CL-327 Guardian variant (see "Variants," below), both lobes acquired a...