Axial supersonic inflow shock-in-stator fan

A technology of supersonic transmission and static vanes, applied in the components of pumping devices for elastic fluids, non-variable displacement pumps, machines/engines, etc. Supersonic airflow deceleration and other problems, to achieve the effect of high total pressure recovery coefficient

Active Publication Date: 2018-06-08
BEIJING INSTITUTE OF TECHNOLOGYGY
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Problems solved by technology

[0007] Among the three axial supersonic inflow fan schemes mentioned above, STFF does not actually solve the problem of diffusion and deceleration of the supersonic airflow in front of the downstream traditional axial subsonic inflow fan; both SSRF and SSSF can smoothly convert the sup

Method used

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  • Axial supersonic inflow shock-in-stator fan
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  • Axial supersonic inflow shock-in-stator fan

Examples

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Example Embodiment

[0079] Example 1

[0080] This embodiment describes the specific implementation of the design method of the axial supersonic through-flow rotary vane shock wave static vane fan stage based on the present invention.

[0081] Choose an aircraft flying at an altitude of 8km and 3Ma as an example, and design an SSSF with a rotor pressure ratio of 4.

[0082] SSSF program design analysis flow chart is as figure 1 As shown, the SSSF scheme selection design is now carried out. First, the flow coefficient (that is, the ratio of the incoming axial velocity to the circumferential velocity of the blade is given), the area ratio of the inlet and outlet of the rotor, and the initial estimation of the total pressure recovery coefficient of the moving and static blades can be given, and then the air can be passed through the compressor Dynamically obtain the initial velocity triangle of SSSF, such as figure 2 Shown. However, the total pressure recovery coefficient of the rotor stator blade corre...

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Abstract

The invention relates to an axial supersonic inflow shock-in-stator fan (SSSF), and belongs to the technical field of mechanical devices and transportation. The SSSF provides a thermodynamic layout fan in a new form, and the thermodynamic layout fan includes axial supersonic inflow rotating vanes and shock stator vanes; the SSSF can directly face axial supersonic inflow, the interior of a rotatingvane channel stays in a fully-unfolded highly-axial supersonic flow state, and a stator vane channel decelerates flow into a subsonic speed through a shock wave system. The design process of the SSSFincludes one-dimensional scheme design, two-dimensional flow design, three-dimensional appearance design, intensity check and machining and testing of test pieces. Compared with a traditional subsonic or transonic fan, the SSSF has the advantages that the length and weight of an air inlet passage are greatly reduced; meanwhile, due to excellent load capacity of the supersonic inflow rotating vanes, the SSSF in a supersonic flight state has the advantages of being high in load and efficiency and light in weight.

Description

technical field [0001] The invention relates to an axial supersonic through-flow rotary vane shock wave stationary vane fan stage, belonging to the technical field of mechanical devices and transportation. Background technique [0002] Supersonic speed, especially supersonic cruise flight is a consistent development goal in the aviation industry, and power technology is the key to realize this goal. After more than half a century of exploration and development, whether it is the SR-71 reconnaissance aircraft in the military field, the F-22 fighter jet, or the "T-144" and "Concorde" supersonic airliners in the civilian field, their supersonic flight power is almost normalized. It is a subsonic aviation gas turbine model with supersonic inlet + axial flow. Despite the great success of this traditional model, it is clear that continuing to improve its performance in this way is extremely difficult. In the above-mentioned mode, the supersonic inlet reduces the supersonic incom...

Claims

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Application Information

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IPC IPC(8): F04D29/38F04D29/54F04D29/68
CPCF04D29/384F04D29/544F04D29/682
Inventor 季路成李嘉宾杨巨涛伊卫林
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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