A power system suitable for small vertical take-off and landing fixed-wing aircraft

Abstract

A power system suitable for small vertical take-off and landing fixed-wing aircraft, including two independent power subsystems, namely: lift fan and auxiliary motor power subsystem, the system generates downward jet airflow, thereby generating The first vertical lift at the front of the fuselage; the main duct fan and the main motor power subsystem deflect the gas ejected backward by the main duct fan through a vector nozzle to generate the second vertical lift at the rear of the fuselage. lift; the deflection system, through the two rolling nozzles, the compressed air generated by the main duct fan is respectively introduced to the wings on both sides, and then sprayed downwards through the nozzles on the wingtips, thereby generating The third vertical lift. The two tumbling nozzles are equipped with an airflow adjustment mechanism, which is used to adjust the amount of gas sprayed by the two tumbling nozzles, thereby generating a rolling moment; by deflecting the first nozzle unit, the downwardly sprayed gas Deflects clockwise or counterclockwise, creating a yaw moment.

Description

technical field [0001] The invention relates to a power system suitable for a small vertical take-off and landing fixed-wing aircraft, which belongs to the technical field of aviation aircraft design. Background technique [0002] The vertical take-off and landing fixed-wing aircraft can take off in a short distance, then convert to fixed-wing mode flight, and finally land vertically. It is a research hotspot in various countries in recent years. [0003] The power system is a difficult point in the development of vertical take-off and landing fixed-wing aircraft, and it plays a vital role in realizing the function of vertical take-off and landing. Among various power systems, the combined power system relies on the nozzle that can be deflected downward and through the engine The shaft-driven lift fan can greatly increase the lift provided and has superior performance. However, this combined power system has a complex structure and a large weight. The two power subsystems a...

AI Technical Summary

Problems solved by technology

[0003] The power system is a difficult point in the development of vertical take-off and landing fixed-wing aircraft, and it plays a vital role in realizing the function of vertical take-off and landing. Among various power systems, the combined power system relies on the nozzle that can be deflected downward and through the engine The shaft-driven lift fan can greatly increase the lift provided and has superior performance, but this combined power system has a complex structure and heavy weight, and the two power subsystems are controlled by a single motor, which requires a transmission clutch system

[0004] In the combined power system, the vector nozzle technology is generally used to achieve vertical take-off and landing. The three-bearing vector nozzle is a large-rotation-angle thrust vector nozzle used in vertical take-off and landing fixed-wing aircraft. The three-section nozzle rotates with each other To achieve the deflection of the overall nozzle surface, the use of vector nozzles can reduce the requirements for take-off and landing sites and the difficulty of deployment, and greatly improve the survivability of vertical take-off and landing fixed-wing aircraft. Large, unable to meet various flight conditions

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