[حسين السعيد]

يا اخوان طالب المساعدة في خمس أسئلة ماني عارف احلها, إذا ممكن تساعدوني راح أكون ممنون جداً.

1- You arrive at the airport early for an instrument lesson with a newly certificated private pilot. It is raining lightly at the surface and the outside air temperature is a balmy 15°C, winds are calm and ceilings are around 2000 feet AGL. Is it correct to infer that

a) Either freezing rain or supercooled droplets may exist aloft
b) Supercooled droplets do not exist aloft
c) Freezing rain does not exist aloft
d) Freezing rain exists aloft




2- While flying on a cross country, you look at the outside air temperature gauge which indicates an air temperature of -10°C, what type of freezing process is likely to occur here.

a) Freezing through ice embryos
b) Freezing through deposition nuclei where water vapor adheres to ice crystals
c) Freezing through contact nuceli such as your aircraft



3- While preparing for departure in your learjet, you notice that what was light snowfall has now increased to be moderate snowfall. The captain tells you that you shouldn't have to worry about icing anymore because of the moderate rate of snowfall. What part of the captain's assumption is correct?

a) There are only ice crystals aloft
b) No liquid water exists aloft
c) Only small amounts of supercooled water exist
d) Icing conditions are less likely in the lowest cloud layer


While flying along at 8,000 feet, you notice that the outside air temperature is about 4°C and rain mixed with snow splatters on the windscreen. It is most likely that the precipitation is being formed by which process?

a) Collision-coalescence
b) Ice crystal


5- Unless otherwise stated in the Aircraft Flight Manual, you should wait for 1/4 to 1/2 inch of ice accumulation before inflating de-ice boots.

a)True
b)False