IC Joshi, Aviation Meteorology
Ice Accretion: DGCA Aviation Meteorology questions
Ice on an airframe adds weight, spoils the shape of the wing and blocks intakes and probes. Which type forms depends on the temperature and on the size of the supercooled drops the aircraft meets.
The 20 questions are mostly definitions and cloud pairings: hoar frost, rime and clear ice, the temperature band where icing is likeliest, the risk in each cloud type and carburettor icing. Exam sessions have featured 17 of these icing questions.
Small drops freeze on impact into rough, opaque rime, while large drops spread before freezing into clear ice. Hoar frost needs no cloud: it is water vapour turning straight to ice on a surface colder than the frost point of the air. Carburettor icing can form in humid air well above freezing.
0 answered·5 free questions·0 right
Question 1 of 5
Hoar frost occurs on airframe in clear air when the temperature of airframe is
Question 2 of 5
In clouds at temperatures below 0° C an aircraft may encounter icing of the type
Question 3 of 5
Opaque Rime ice is
Question 4 of 5
Rime is formed by freezing of ............ supercooled water droplets on airframe when aircraft is flying through clouds
Question 5 of 5
Glazed ice is formed by freezing of ............ supercooled water droplets on airframe when aircraft is flying through clouds
15 more questions in this chapter
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