Wing concept with integrated, mounted jet propulsion

Abstract

Integrated wing / jet propulsion design, characterized in that one or more fixed ducted propellers / blowers are mounted as propulsion on the upper surface, in the rear part of the wing profile, but clearly in front of the wing trailing edge and in front of a wing flap.

Description

1. Title: Wing concept with integrated, mounted jet propulsion.

[0001] 2nd type: Air-jet propulsion wings.

[0002] 3. Purpose: To create a safe, quiet, environmentally friendly, efficient airfoil concept in which the integration of the ducted fan / blower on the upper surface of the profile provides both a strong, direct increase in lift and an optional improvement in controllability through deflection of the air jet.

[0003] 4. State of the Art: Common modern short takeoff concepts that utilize propellers to blow air onto the wing are mounted in front of the wing. These do not improve safety, noise, environmental friendliness, or the efficiency of the propulsion system itself. In modern short takeoff systems that use ducted fans / blowers, these are mounted either on the leading edge of the wing or directly on the trailing edge. The individual components of the system described here are known, but the novel combination and positioning of the ducted fans / blowers on the wing directly influence lift. The possibility of constructing this new system has only been made possible by the fact that electric ducted fans / blowers with a very short installation depth have replaced long, small turbines in small aircraft.

[0004] 5. Critique of the state of the art: In current short-launch systems, when propellers are positioned in front of the wing, both the upper and lower surfaces of the wing are exposed to the propeller jet. If ducted fans / blowers are used on the upper surface, only the fast-moving exhaust jet is used to increase the flow velocity on the airfoil's upper surface. Neither configuration represents an optimal solution.

[0005] 6. Objective of the Invention: The objective of the invention is to utilize the current state of the art of the individual elements in combination by means of a wing concept with an integrated ducted fan / blower, such that global flow control occurs on the upper surface of the airfoil. This increases lift where it is generated without increasing the flow velocity on the underside of the airfoil, where drag, not lift, is generated. This achieves a safer, quieter, more environmentally friendly, efficient, and economical way to enable extremely short takeoffs and landings, which is not possible with the current state of the art.

[0006] 7. Innovation: The special arrangement of a ducted fan / blower on the upper surface of the trailing half of the airfoil, but in front of a flap / rudder, increases the airflow velocity on the upper surface of the airfoil, both in the intake air to the ducted fan / blower and in its exhaust jet. This results in a significant increase in lift from the wing, especially at low and very low airspeeds, and also enables reliable control. This allows for extremely short takeoffs and landings, even near-vertical takeoffs and landings. Additionally, the exhaust jet is deflected directly by contact with a flap, ensuring controllability at very low airspeeds through thrust vectoring. A gap can be incorporated between the wing and the flap to further enhance the flap's effectiveness.The deflection of the exhaust jet is further enhanced by an additional control flap directly within the exhaust jet. The use of ducted fans / blowers eliminates any unprotected, exposed rotating parts on the aircraft, thus significantly increasing the safety of operators and ground personnel compared to short takeoff systems that use propellers mounted in front of the wing.

[0007] 8. Design: A ducted propeller / blower (2) is attached to the upper surface of the wing profile (1) in the rear area, either in groups or individually, using a suitable bracket (3), see Fig. 1. The flap (4) is designed so that the exhaust air jet rests against it and also offers the possibility of a gap (5) between the profile and the flap, see Fig. 1. An independent control flap (6) can be attached directly in the exhaust jet of the ducted propeller / blower (2), see Fig. 1. The ducted fans / blowers can be individually attached to the wing, see Fig. 2, or in groups, see Fig. 3, will be ordered.

Claims

[1] Integrated wing / jet propulsion design, characterized by , that as propulsion, one or more fixed ducted propellers / blowers are mounted on the upper surface, in the rear part of the wing profile, but clearly in front of the wing trailing edge and in front of a wing flap. [2] Integrated wing / jet propulsion design according to claim 1), characterized by , that the position of the mantle propellers / blowers allows both the intake airflow and the expelled air jet to be used to influence the pressure field on the airfoil, in order to increase the overall lift and enable controllability even at the lowest speeds. [3] Integrated wing / jet propulsion design according to claim 1), characterized by, that the special arrangement and position of the mantle propellers / blowers on the wing profile results in a strong increase in lift, making extremely short take-off and landing distances possible, even up to a quasi-vertical take-off and landing. [4] Integrated wing / jet propulsion design according to claim 1), characterized by , that the outgoing air jet is additionally influenced by the geometry of the wing trailing edge flaps, in that the flaps are in contact with the air jet in order to directly increase lift and controllability on the wing in the sense of thrust vector control. [5] Integrated wing / jet propulsion design according to claim 1), characterized by , that a gap can be provided between the wing and the flap, which allows for better airflow around the downward-deflected flap. [6] Integrated wing / jet propulsion design according to claim 1), characterized by, that additional control flaps are placed directly in the airflow of the ducted propellers / blowers mounted on the upper surface of the wing, which further increases controllability. [7] Integrated wing / jet propulsion design according to claim 1), characterized by , that the exclusive use of ducted propellers / blowers optimizes the safety of operators and ground personnel, as there are no easily accessible, open, unprotected high-energy components. [8] Integrated wing / jet propulsion design according to claim 1), characterized by that the mantle propellers / blowers are arranged individually or in groups on the upper side of the wings and have an even or odd number there.

Images