Axial supersonic inflow shock-in-stator fan

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...

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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 supersonic inflow to the downstream The subsonic incoming flow required by the fan, but the strong shock wave / boundary layer induced separation in the SSRF rotor blade and SSSF stator blade will aggravate the loss and aerodynamic blockage, and cannot be practically applied without control

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