How is the operation of an aircraft combustion heater typically controlled?

The operation of an aircraft combustion heater is typically controlled by a thermostat circuit that cycles the fuel on and off. This approach allows for precise temperature regulation within the aircraft cabin, ensuring a comfortable environment for passengers and crew.

A thermostat monitors the cabin temperature and activates the heater when the temperature drops below a set point. Once the desired temperature is reached, the thermostat turns the fuel flow off, preventing overheating. This cycling of fuel in response to cabin temperature changes is essential for maintaining a stable and efficient heating operation.

While manual switches and external temperature sensors play roles in certain systems, relying solely on these methods would not provide the same level of efficiency and temperature control as a thermostat circuit. Continuous fuel flow regulation might be part of a more complex system, but in traditional combustion heater operations, the cycling mechanism managed by a thermostat is the preferred and most effective method for temperature management.