摘要 |
An ice protection system is disclosed for a structure having at least one surface to be protected from a range of icing conditions, the ice protection system comprising: at least one heater device (108, 110, 112), arranged in thermal contact with said at least one surface, -at least one temperature sensor (314) for outputting at least one temperature signal, said at least one sensor being in thermal contact with at least one said heater device; and a control system (600) for controlling the heat output of said at least one heater device using said at least one temperature signal, wherein the control system is operable to control the heat output of said at least one heater device in order to maintain the temperature of the or each heater device at a substantially constant temperature. |