Patent ID: 9155225
Filing Date: 2015-10-06
Classification: B24D,B64D,F24H,H05K

Abstract:
1. An air heater arranged in an air pipe of an electronic system of a radar antenna, wherein the electronic system is mounted on a body of an aircraft and the electronic system is enclosed in a housing with at least one air inlet that is adapted to provide outside air for cooling of the electronic system, wherein the air pipe is located between the air inlet and the electronic system, wherein the air heater is mounted in the air pipe between the air inlet and the electronic system, the air heater comprising: a heater and a regulator, wherein the regulator is invariable and is arranged to restrict an airflow through the air pipe, and wherein the heater is arranged and dimensioned to heat the restricted airflow such that a temperature of the restricted airflow after the restricted airflow has passed the heater is maintained above a first predetermined threshold value, and wherein a cooling effect of the restricted airflow on the electronic system is maintained above a second predetermined threshold value when the temperature of the restricted airflow is below a third predetermined threshold value, wherein the first predetermined threshold value is lower than the third predetermined threshold value, and the first, the second and the third predetermined threshold values are dependent on material properties of components arranged in the electronic system.