The Blown-Nacelle Stabilizer

In traditional aviation, the vertical stabilizer is a passive surface—a static fin at the back of the plane that waits for the wind to hit it. For the Virtual Wing Sport-Camper to land in a 15-meter urban clearing, the pilot needs active, high-authority steering even at near-zero airspeeds.

By moving the vertical stabilizers from the tail to the wing roots—integrated directly above the engine nacelles—I have created a "Blown-Nose" stabilization system that thrives on the very air the propellers are pulling.

Traditional bush planes and seaplanes use a high T-tail to keep the rudder clear of the water spray and wing wake. While functional, this adds significant weight, increases the hangar footprint (height), and obscures rearward visibility. In my new design I have eliminated the tail entirely. In its place, two compact, low-aspect-ratio vertical fins sit atop the engine nacelles where the wing meets the fuselage. As a result, the aircraft’s vertical height is reduced by 1.5 meters, and the pilot gains an unobstructed 360° Panoramic View, essential for monitoring the landing zone through the NIR Vision Suite.

The most significant engineering advantage of this placement is its relationship with the Remote-Drive Pusher Props. A propeller is a low-pressure pump; it sucks air from the front to push it out the back. Because my stabilizers sit immediately forward of the propeller arc, the props act like a vacuum, pulling air across the rudders at a higher velocity than the aircraft's actual flight speed. This suction keeps the boundary layer attached to the rudder even during extreme, high-alpha descents. When a standard rudder would stall and lose effectiveness, our nacelle-mounted rudders maintain crisp, precise steering authority.

Propeller noise is largely caused by blades chopping through the turbulent wake of a stabilizer or spar. My stabilizers end just before the propeller arc. This ensures that the inflow to the blades is Laminar (Smooth) and uniform. This eliminates the thumping vibration common in pusher planes. This translates to an ultra-quiet cabin environment and reduced structural fatigue on the engine mounts.

By using twin stabilizers instead of one, I introduce a new layer of safety and agility. If one rudder jams, the second remains fully operational. The flight computer can coordinate the rudders with Differential Thrust from the twin 75hp engines. This allows the plane to pivot 360° in its own length on a narrow trail—a tactical maneuver that is impossible for a single-engine, single-tail aircraft.

The move to nacelle-mounted stabilizers is the final step in decoupling the Sport-Camper from 1950s aerodynamic constraints. By placing the rudders in the suction zone of the pusher props, I have turned a stability challenge into a tactical advantage. It is a system that provides the precision of a high-performance jet with the rugged simplicity required for the backcountry.