Aircraft cabin low temperature prevention system and method

Abstract

The invention relates to an aircraft cabin low temperature prevention system and method. Aircraft cabin low temperature prevention system includes: cabin temperature sensor; cabin humidity sensor; emergency ventilation line for delivering ram air into the cabin area; emergency ram air damper actuator installed in the emergency ventilation line for opening or closing Ram air; and a controller, used to calculate the human body tolerance time under the current cabin environment according to the temperature of the cabin area measured by the cabin temperature sensor, the humidity of the cabin area measured by the cabin humidity sensor, and the first plurality of built-in parameters of the controller, If the calculated human tolerance time is lower than the human tolerance time threshold, the controller controls the emergency ram air damper actuator to turn off the ram air. The aircraft cockpit low temperature prevention system and method of the present invention can have the following beneficial technical effects: it can prevent the cockpit temperature from being too low in time and reduce the operational burden of the pilot.

Description

Aircraft cabin low temperature prevention system and method technical field The present invention relates to aircraft cockpit low temperature prevention system and method, belong to aircraft cockpit temperature environment control system field area. Background technique [0002] A comfortable aircraft cabin temperature environment can ensure that the crew members perform flight tasks normally and provide comfort for passengers. flight environment. However, when the dual air conditioning components of the aircraft fail and emergency ventilation is used, the ram air temperature is low in cold weather conditions To ‑40℃, the ram air supplied to the cabin will cause the cabin temperature to drop rapidly. If ETOPS (Extended Range Operation) is performed flight) (the ETOPS diversion time for active single-aisle aircraft is 120‑180 minutes), the continuously decreasing cabin temperature environment will lead to cause the crew to be reduced to the point of thinking errors o...

AI Technical Summary

Problems solved by technology

However, this method will lead to strict requirements on the verification pressure and burst pressure of the trim pipeline and the valve, potentially increasing the weight of the pipeline, and complicating the control logic of the air conditioning system, increasing the operational burden of the pilot

Therefore, according to incomplete statistics, among the civil aircraft in service, only the B777 model adopts this method of arrangement; 2) Most models still adopt the method of arranging the trim air induction port downstream of the FCV, and then intermittently close the emergency ram air damper , to keep the cockpit warm, but there is no scientific guidance for opening or closing the emergency ram air valve. situation arises

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