Mechanical-pneumatic composite thrust vectoring nozzle with short-distance/vertical take-off and landing functions

A vector nozzle, vertical take-off and landing technology, applied in the direction of machines/engines, jet propulsion devices, etc., can solve the problems of complex nozzle structure, difficult maintenance, difficult control, etc., to reduce the number of parts and adjust the complexity, response The effect of high speed and less mechanical structure

Active Publication Date: 2021-01-15
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The structure of the traditional STOL/VTOL nozzle is complex, and the m

Method used

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  • Mechanical-pneumatic composite thrust vectoring nozzle with short-distance/vertical take-off and landing functions
  • Mechanical-pneumatic composite thrust vectoring nozzle with short-distance/vertical take-off and landing functions
  • Mechanical-pneumatic composite thrust vectoring nozzle with short-distance/vertical take-off and landing functions

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Effect test

Embodiment

[0056] The calculation is carried out for a mechanical-pneumatic composite vectoring nozzle with vertical take-off and landing function in a typical configuration.

[0057] Figure 6 , Figure 7 What is shown is a specific embodiment of using a mechanical disturbance type throat offset type aerodynamic vectoring nozzle. in, Figure 6 Shown is the internal flow field of a nozzle with no disturbance applied near the throat. It can be seen that the present invention cannot realize the turning of the airflow beyond 95° at this time, thus vertical take-off and landing cannot be realized. But when the spoiler that controls the bowing direction is stretched out, so that the vector nozzle produces the airflow deflection in the bowing direction, the present invention obviously produces a deflection of more than 95°, specifically as Figure 7 As shown, the vertical take-off and landing function is realized. Therefore, for the present invention, it is necessary to generate a real-ti...

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Abstract

The invention discloses a mechanical-pneumatic composite thrust vectoring nozzle with a short-distance/vertical take-off and landing functions. The mechanical-pneumatic composite thrust vectoring nozzle comprises a pneumatic steering section and a mechanical steering section. The pneumatic steering section comprises an axisymmetric/quasi-axisymmetric throat offset type pneumatic thrust vectoring nozzle and a transition section. The mechanical steering section comprises a cylinder A, a cylinder B, a bearing A and a bearing B. Along the flow direction of fluid, the cylinder A, the bearing A, thecylinder B, the bearing B, the transition section and an inlet of the axisymmetric/quasi-axisymmetric throat offset type pneumatic thrust vectoring nozzle are connected in sequence. Through relativerotation of the two bearing mechanisms and the pneumatic steering effect of the throat offset type pneumatic thrust vectoring nozzle, the function that airflow deflection exceeds 90 degrees under thecondition that a mechanical structure does not deflect by 90 degrees is achieved, attitude control can be conducted through the pneumatic thrust vectoring nozzle in a hovering state, and the continuous change of key parameters such as lift force, thrust and vector angle of a whole exhaust system is assisted. The nozzle has the characteristics of simple structure, relatively few movement mechanismsand the like.

Description

technical field [0001] The invention relates to a mechanical-pneumatic composite vectoring nozzle with short-distance / vertical take-off and landing functions, and belongs to the technical field of advanced thrust vectoring nozzles of aero-engines. Background technique [0002] With the development of science and technology and the urgent needs of practical applications, short-distance / vertical take-off and landing aircraft have once again entered people's field of vision. The structure of the traditional ST / VTOL nozzle is complex, and the mode switching process is difficult to control and difficult to maintain. Therefore, it is necessary to develop a STOL / VTOL exhaust system with simple structure, light weight, good performance, and meeting the needs of high-speed flight. [0003] At present, the fluid thrust vectoring nozzle has gradually become the research focus and research focus of various countries due to its simple structure and light weight, and will enter engineeri...

Claims

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Application Information

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IPC IPC(8): F02K1/00F02K1/78
CPCF02K1/004F02K1/78
Inventor 黄帅徐惊雷潘睿丰张玉琪宋光韬陈匡世曹明磊成前
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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