Book 2 - Hot Air Ice Protection

Question 1

hot air used in the anti-icing system is normally taken from compressor ________ and ducted externally control and _______ regulating valves to the area requiring anti-icing

Answer 1

hot air used in the anti-icing system is normally taken from compressor DELIVERY and ducted externally control and PRESSURE regulating valves to the area requiring anti-icing

Question 2

some engines intakes and nose-cones are anti-iced by __________ supplies of regulated or non-regulated compressor air. occasionally, some big ____-bypass engines may have nose cones which aren’t anti-iced at all. such engines are likely to have a small cone of _____, mounted slightly ___-set which ________ with rotation to shake loose any ice that forms on the nose cone

Answer 2

some engines intakes and nose-cones are anti-iced by CONTINUOUS supplies of regulated or non-regulated compressor air. occasionally, some big HIGH-bypass engines may have nose cones which aren’t anti-iced at all. such engines are likely to have a small cone of RUBBER, mounted slightly OFF-set which VIBRATES with rotation to shake loose any ice that forms on the nose cone

Question 3

__________ valves are used to prevent excessive ________ in the system and to limit amount of air bled from the engine at high speeds that would cause loss of engine ___________

Answer 3

REGULATING valves are used to prevent excessive PRESSURES in the system and to limit amount of air bled from the engine at high speeds that would cause loss of engine PERFORMANCE

Question 4

the pressure ____ incurred at the intake during static running conditions can cause an _____ situation to occur at relatively ____ local temperatures. these temperatures can be as high as up to +26 celsius, with visible moisture present, in the case of big high-bypass engines at full thrust. normally, a figure of +_ to +__ celsius would be reasonable, with visible moisture present

Answer 4

the pressure DROP incurred at the intake during static running conditions can cause an ICING situation to occur at relatively HIGH local temperatures. these temperatures can be as high as up to +26 celsius, with visible moisture present, in the case of big high-bypass engines at full thrust. normally, a figure of +8 to +10 celsius would be reasonable, with visible moisture present