The subject of this invention is a drive unit for a flying vehicle, to be applied in the air industry, for instance in the production of flying taxis, as well as in the model-making branch and in the toy industry.

The solutions combining commonly known drive systems of aircrafts and helicopters or system which use propellers or turbines producing a vertical draft for vertical take-off and landing and then they change the direction of the draft ^* into horizontal, by rotary change of position, are known. The solutions of vertical take-off aircrafts, which change completely the position from vertical into horizontal, are known.

The solution of an air vehicle drive device including the fan placed in a tubular air channel and guides for distributing the air jet into two or more additional jets directed to the appropriate jet nozzles is known from the publication of international application WO2003GB02770. The device provides vertical start and lifting force as well as the force for horizontal flight.

A drive unit, fitted with a turbine with a distributor, placed in the air channel, longitudinally with the outlet chute of the ramjet engine, is known from the publication of American invention disclosure US 20080150083. The distributor divides uniformly the flow of exhaust gas from the ramjet engine to two pairs of outlet nozzles, the outlet part of which is bent at an angle of 120 ⁹ from the vertical, longitudinal axis of the nozzle.

A drive of vertical take-off and landing air vehicle, fitted with an engine, which contains at least two pairs of air channels, located symmetrically on the right and left sides in relation to the aircraft axis, in known from the Polish patent description PL221132. A turbine and a throttling valve, which serves for regulating the force of draft produced by the turbine and is located between the air inlet to the air channel and the turbine, are placed in each air channel. Each air channel includes a movable outlet nozzle at the outlet.

The purpose of this invention is to design such a construction of drive which allows building the vertical take-off and landing air vehicles without equipping them with additional, rotary drive elements or without equipping them in two drive systems, separately for vertical and horizontal flight.

According to the invention, the essence of the air vehicle drive unit, which has at least one air channel fitted with the openings of outlet- inlet nozzles and the drive in the form of at least one fan and the engine, is that the fans of the drive are fixed on the both ends of the air channel and each of the fans of the drive is connected with an independent engine for individual regulation of the draft by each of them. One of the openings of outlet-inlet nozzles is placed in the wall of the central part of the air channel, between fixed drive fans, and constitutes the opening of the vertical draft outlet-inlet nozzle.

It is favourable when the opening of the vertical draft outlet-inlet nozzle has a contour of rectangle with rounded corners, elongated in the direction of longitudinal axis of the air channel.

The solution according to the invention is characterized in a simple construction, which allows controlling the vehicle freely, by an independent regulation of rate and direction of the air jet produced by individual fans. The vehicle can ascend, descend, rotate, fly forward and backward.

The drive unit allows application, in its various combinations and arrangements, in flying vehicles.

The subject of the invention is presented in the embodiment, in figure, where Fig. 1 presents schematically the flying vehicle drive unit in longitudinal section from the side, Fig. 2 presents the unit in the longitudinal section from above, Fig. 3 presents the resultant draft force F of the drive unit, with equal draft forces Fi and F ₂ , generated in one direction, Fig. 4 presents resultant draft force F' of the drive unit, with different draft forces Fi and F ₂ , generated in one direction, Fig. 5 presents resultant draft force F" of the drive unit with equal draft forces Fi, and F ₂ , generated oppositely to each other, and Fig. 6 presents schematically the example of a flying vehicle with the drive unit according to the invention.

The flying vehicle drive unit, according to the present invention, presented in Fig.l and Fig.2, is formed by the air channel 1, in the form of a straight segment of a tube with circular section, which has the fans 2 and 2'with engines 3 and 3 ^' fixed on its both ends. The openings of the horizontal draft outlet-inlet nozzles 4 are located on the both ends of the air channel 1, while the opening of the vertical draft outlet-inlet nozzle 5 is placed between the fixed fans 2 and 2 ^' of the drive and situated longitudinally in the wall of the central part of the air channel .

A flying vehicle with the drive unit in delta configuration, where there are three separate air channels with the drives, in the form of a fan with engine, fixed on the both ends of the air channels, is presented in Fig. 6.

Depending on directions and force of drafts generated by the fans, the air channel, fitted with three openings, generates a resultant draft in any direction . Owing to this, the vehicle can achieve a stable direction of flight in any direction, i.e. vertical ascending and descending and horizontal forward and backward. By the application of several air channels, it is possible to achieve an additional rotary movement of the entire vehicle.