whats the difference between 1 stepand 2 step application
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1 step fluid is applied hot as two step aircraft is first deiced with hot water
then anti icing is applied cold
what are the symptoms of inlet icing for propeller driven airplanes
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-engine roughness
-gradual loss of either power or manifold pressure
,what are the factors that determine collection efficiency,
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drop size(larger drop collects more, smaller has a lower), geometry of
collecting surface(less curvature= higher collection efficiency, thick air foil =
low collection efficiency ) and airspeed(faster = higher collection
efficiency, lower = low collection experience)
what are the factors that determine the thermodynamic process of freezing
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temperature(cold air =rapid freezing of droplets, warm air =slow freezing of
droplets), liquid water content(high LWC= moderate or severe slower
freezing, low LWC = trace or light icing quick freezing), drop size(big=
slower freezing, small= rapid freezing) and airspeed(warmer at slower
speeds, colder at higher speeds)
what is the Part and Appendix of the Regulations that deals with the certification of
aircraft for icing conditions
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25.1419
what are the two general characteristics required for the formation of clouds with
significant amounts of supercooled liquid water
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-Lifting Mechanism
•Source of Moisture
what is collection efficiency
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The ratio of the water mass striking the airframe to the water mass in the
free air stream
what are the effects of icing on the four forces acting on an airplane in flight
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thrust decreases by an unkown amount
lift decreases up to 30%
weight increases by 2%
drag increases by 200-800%
what is hold over time and what factors influence it
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how long the anti icing will work and temperature type of fluid are the
biggest factors contributing to hold over time
Give this one a try later!
1 step fluid is applied hot as two step aircraft is first deiced with hot water
then anti icing is applied cold
what are the symptoms of inlet icing for propeller driven airplanes
Give this one a try later!
-engine roughness
-gradual loss of either power or manifold pressure
,what are the factors that determine collection efficiency,
Give this one a try later!
drop size(larger drop collects more, smaller has a lower), geometry of
collecting surface(less curvature= higher collection efficiency, thick air foil =
low collection efficiency ) and airspeed(faster = higher collection
efficiency, lower = low collection experience)
what are the factors that determine the thermodynamic process of freezing
Give this one a try later!
temperature(cold air =rapid freezing of droplets, warm air =slow freezing of
droplets), liquid water content(high LWC= moderate or severe slower
freezing, low LWC = trace or light icing quick freezing), drop size(big=
slower freezing, small= rapid freezing) and airspeed(warmer at slower
speeds, colder at higher speeds)
what is the Part and Appendix of the Regulations that deals with the certification of
aircraft for icing conditions
Give this one a try later!
25.1419
what are the two general characteristics required for the formation of clouds with
significant amounts of supercooled liquid water
, Give this one a try later!
-Lifting Mechanism
•Source of Moisture
what is collection efficiency
Give this one a try later!
The ratio of the water mass striking the airframe to the water mass in the
free air stream
what are the effects of icing on the four forces acting on an airplane in flight
Give this one a try later!
thrust decreases by an unkown amount
lift decreases up to 30%
weight increases by 2%
drag increases by 200-800%
what is hold over time and what factors influence it
Give this one a try later!
how long the anti icing will work and temperature type of fluid are the
biggest factors contributing to hold over time
