Hypersonic variable-geometry air inlet channel with rectangular section, design method and work mode

A rectangular cross-section, hypersonic technology, applied in the direction of mechanical equipment, jet propulsion devices, gas turbine devices, etc., can solve the problem that the complexity of geometric devices and the difficulty of control affect the working efficiency of the aircraft, the restart of the intake port, and the capture rate of low Mach number flow Low-level problems, to achieve the effect of simple structure, airway activation and convenient control

Active Publication Date: 2014-07-23
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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AI Technical Summary

Problems solved by technology

For a hypersonic air-breathing vehicle, the complexity and control difficulty of the variable geometry device will greatly affect the working efficiency of the vehicle
[0004] At present, most of the existing technologies of variable geometry inlets that have been proposed only focus o...

Method used

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  • Hypersonic variable-geometry air inlet channel with rectangular section, design method and work mode
  • Hypersonic variable-geometry air inlet channel with rectangular section, design method and work mode
  • Hypersonic variable-geometry air inlet channel with rectangular section, design method and work mode

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Embodiment Construction

[0030] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0031] Such as figure 1 As shown, the rectangular section hypersonic variable geometry inlet of the present invention includes a hypersonic vehicle precursor 1, a lip cover adjustable side plate 2, a rectangular section lip cover 3 and a side plate actuator 4; figure 1 The hypersonic flight precursor 1 shown in is a simplified schematic diagram, and the specific form can be one of the categories of binary wedge surface compression precursor, three-dimensional curved surface compression precursor and waverider precursor in the traditional hypersonic inlet. The lip cover 3 with a rectangular cross-section is fixedly installed on the top of the hypersonic vehicle precursor 1, and the two side plate actuators 4 are symmetrically fixed and installed in the hypersonic vehicle precursor 1, and its actuation instructions come from the aircraft control system or the p...

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Abstract

The invention discloses a hypersonic variable-geometry air inlet channel with a rectangular section and belongs to the field of pneumatic design of aerospace aircrafts. A seam through which a lip mask adjustable side plate penetrates and moves is formed in the front body of an aircraft; one end of the lip mask adjustable side plate is linked with the leading edge of a lip mask with a rectangular section through a rotating motion pair and the other end of the lip mask adjustable side plate is connected with a side plate actuating barrel arranged in the front body of the aircraft; the side plate actuating barrel controls the lip mask adjustable side plate to rotate with single freedom degree. The invention further provides a design method and a work mode of the hypersonic variable-geometry air inlet channel with a rectangular section. By adjusting the sweep angle of the lip mask adjustable side plate, the adjustment of the air inlet channel from idle state to starting state and the increasing and decreasing of mach number flow rate capture rate of the air inlet channel are realized; the hypersonic variable-geometry air inlet channel with a rectangular section is simple in structure and easy to control; the work efficiency of the propulsion system of a suction type hypersonic aircraft is greatly increased.

Description

technical field [0001] The invention relates to a rectangular-section hypersonic variable-geometry inlet, a design method and a working method, and belongs to the field of aerodynamic design of aerospace vehicles. Background technique [0002] For hypersonic air-breathing aircraft, the excellent aerodynamic performance of the inlet in the design state cannot guarantee that it can work normally and stably in all key operating states. Especially for a hypersonic air-breathing aircraft operating in a wide Mach number range, when it is in a non-design working state, can the intake duct start normally and provide sufficient airflow quality for the engine with less resistance and flow loss? The required air flow rate will be an important criterion for evaluating the comprehensive aerodynamic performance of the intake port. [0003] The air inlet variable geometry technology refers to the use of the air inlet's own mechanical device or additional fluid, electromagnetic and other m...

Claims

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Application Information

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IPC IPC(8): F02C7/042
Inventor 滕健袁化成华正旭刘君
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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