Aircraft cabin air temperature sensing apparatus and system using passive air flow

A system for sensing air temperature within an aircraft, comprising:

• an air distributor;
• an ejector comprising
• a first air duct for receiving a first air flow from an aircraft air distribution duct, the first air duct defining a first cross-sectional area,
• a second air duct for receiving a second air flow from a passenger compartment of the aircraft, the second air flow merging with the first air flow downstream of the second air duct, and
• a restrictor connected to the first air duct defining a minimal cross-sectional area;
• a temperature sensor in fluid communication with the second air flow;
• and
• a controller connected to the temperature sensor to receive temperature information from the temperature sensor,
• wherein the minimal cross-sectional area of the restrictor is smaller than the first cross-sectional area of the first air duct so as to create a region of low pressure within the ejector, causing the second air flow to be suctioned over the temperature sensor and through the second air duct.