Book 2 - Electrical Ice Protection

Question 1

electrical anti-icing is generally used for turbo-_________ installations

Answer 1

electrical anti-icing is generally used for turbo-PROPELLER installations

Question 2

the surfaces that are required to be heated electrically are the air _______ cowling, the propeller _______, the _______ and, on some installations, the oil _______ intake cowling

Answer 2

the surfaces that are required to be heated electrically are the air INTAKE cowling, the propeller BLADES, the SPINNER and, on some installations, the oil COOLER intake cowling

Question 3

electrical heating ____ are bonded to the surfaces where required, protected against rain _______ by a poly________ paint coating

Answer 3

electrical heating PADS are bonded to the surfaces where required, protected against rain EROSION by a polyURETHANE paint coating

Question 4

when the system is in operation, some areas are ___________ heated, to prevent ice forming on the ________ edges and also to limit the ____ of ice on the areas which are ______________ heated. power is supplied by the __________ and to keep size and weight of the generator down, the de-icing electrical loads are _______ between areas

Answer 4

when the system is in operation, some areas are CONTINUOUSLY heated, to prevent ice forming on the LEADING edges and also to limit the SIZE of ice on the areas which are INTERMITTENTLY heated. power is supplied by the GENERATOR and to keep size and weight of the generator down, the de-icing electrical loads are CYCLED between areas

Question 5

when the system is in operation, the ___________ heated areas prevent ice formation, but the intermittently heated areas allow ice to form in the ____-off period. during the heat-__ period, adhesion of the ice is broken and it is then blown off

Answer 5

when the system is in operation, the CONTINUOUSLY heated areas prevent ice formation, but the intermittently heated areas allow ice to form in the HEAT-off period. during the heat-ON period, adhesion of the ice is broken and it is then blown off

Question 6

the heat-off periods of the ___________ heated areas are designed to ensure the engine can accept the amount of ice that is collected during that period

Answer 6

the heat-off periods of the INTERMITTENTLY heated areas are designed to ensure the engine can accept the amount of ice that is collected during that period

Question 7

the heat-on periods of the ___________ heated areas are designed to ensure adequate _______ of ice, without causing any run-____ icing to occur

Answer 7

the heat-on periods of the INTERMITTENTLY heated areas are designed to ensure adequate REMOVAL of ice, without causing any run-BACK icing to occur

Question 8

___-speed cycling systems are used to accommodate propeller and spinner requirements. fast cycle at ____ air temperatures and when water content is ____ and a slow cycle in the ______ temperature range

Answer 8

TWO-speed cycling systems are used to accommodate propeller and spinner requirements. fast cycle at HIGH air temperatures and when water content is HIGH and a slow cycle in the LOWER temperature range