viserfly

Questions for ICE ACCRETION

Answer the following questions

1. When fog freezes on parked aircraft it produces
2. Glazed ice is formed by freezing of _____ supercooled water droplets on airframe and aircraft is flying through clouds
3. CI, CS and CC clouds consist mostly ice crystals, Icing hazard is therefore
4. _____ occurs in St, Sc, Ac, Au, Cu, Ns at temperature -10 to -40°C and in Cb at temperature 20 to -40°C
5. Rime is formed by freezing of ____ supercooled water droplets on airframe when air is flying through clouds
6. In clouds _____ occurs when a wide range of water drop sizes are present at temperatures between 0°C and -40°C
7. In AC clouds _____ icing is possible in mountainous areas
8. In CB icing may range from light to severe type up to -20°C level. Below this temperature severe icing is
9. ______ occurs in a moist cloudless air on an aircraft surface having temp, below 0°C, due to sublimation of water vapour onto feathery ice crystals
10. In TCU icing may range from light to severe type at least up to _____ level
11. Opaque Rime ice is
12. Carburetor icing occurs when air from intake passes through a ventury (choke) and causes expansional cooling and vaporization of fuel. Serious icing can occur can occur at extreme temperatures
13. Icing ____ the stalling speed appreciably
14. Liquid water content is an important factor in icing. As the maximum water concentration is around ______ , maximum ice formation in clouds may also be expected around the level
15. _____ occurs in AS, NS, AC and towering CU or CB between 0°C and -20°C, in warm front below 0°C, especially if the aircraft has rapidly descended from a colder region
16. Airframe icing occurs below 0°C. Its probability of occurrence decreases progressively to -20°C, as at lower temperatures the proportion of super-cooled water drops in a cloud
17. The _____ ice poses serious aviation hazard
18. Hoar frost occurs on airframe in clear air when the temperature of air frame is
19. In clouds at temperatures below 0°C and aircraft may encounter icing of the type
20. AS, NS consist of supercooled water drops and ice crystals in varying proportion icing is possible