Air flow regulating device for ram air inlet

Abstract

The invention relates to the technical field related to aircraft, and discloses a ram air inlet air flow regulating device. In the present invention, a regulating piece is arranged at the entrance section of the ram air inlet, the regulating piece is distributed along the air flow direction of the ram air inlet, the downstream end of the regulating piece is rotatably connected to the downstream end of the ram air inlet, and the upstream end of the regulating piece is rotatably connected At the movable end of the drive unit, the drive unit drives the adjusting piece to rotate relative to the ram air inlet, so that the adjusting piece extends into the inlet section to adjust the flow rate of the ram air inlet, or makes the adjusting piece withdraw from the ram air inlet . The utility model has the advantages of simple structure and small weight. Not only can it meet the flow regulation requirements of the ram air inlet, but also the variation of the total pressure recovery coefficient is within 0.1%. The average pressure of the gas remains basically unchanged, and no additional loss will be caused to the quality of the intake air.

Description

technical field [0001] The invention relates to the technical field related to aircraft, in particular to a ram air inlet air flow regulating device. Background technique [0002] The ram air intake is an important part of the air conditioning refrigeration system. The cooling air provided by the ram air intake, under the action of auxiliary systems such as refrigeration components, flow regulation and control, adjusts the high temperature and high pressure air from the engine to a temperature, pressure The air is supplied by the air conditioner with suitable humidity, and then mixed with the recirculated air, and then enters the cabin, cockpit and other areas after being adjusted by the trim system, so as to realize the function of environmental regulation. [0003] The ram air flow control of the air conditioning system is an important function that the ram air intake needs to realize. The current flow control schemes for large passenger aircraft mainly include the followi...

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Problems solved by technology

[0003] The ram air flow control of the air conditioning system is an important function that the ram air intake needs to realize. The current flow control schemes for large passenger aircraft mainly include the following two types. The first is to install a valve downstream of the ram air intake for flow control. However, installing a valve downstream of the ram air intake will cause the ram air intake to always be fully open during takeoff, landing, and cruise of the aircraft, resulting in greater resistance and excessive fuel compensation loss

[0004] The second is to set a ram intake baffle door at the upstream inlet of the ram air intake for flow control, but to set a ram intake baffle door at the upstream inlet of the ram air intake for flow control, although it can realize aircraft take-off and landing, cruise The middle ram air intake is not fully open, but the ram air intake baffle has the defects of heavy weight and complicated structure

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