AIRCRAFT IN-FLIGHT ICING

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Authors
  1. Paraschivoiu, I.
  2. Brahimi, M.T.
Corporate Authors
Defence Research Establishment Valcartier, Valcartier QUE (CAN);Ecole Polytechnique, Montreal QUE (CAN) Centre de Developpement Technologique
Abstract
Icing is one of the most serious hazards for aircraft. Icing comes from the freezing of cloud droplets, or supercooled droplets which remain in liquid state even at temperatures far below freezing, when they are stuck by the aircraft during the flight. Cloud droplets may freeze instantaneously and from rime ice on unprotected surfaces or dun downstream and freeze later forming glaze ice structure. Icing is most severe when temperature is near 0C but may be encountered at temperature as low as -40C. The amount and rate of icing depend on a number of meteorological and aerodynamic factors. Of primary importance are the amount of liquid water content of droplets, their size, the temperature of aircraft surfaces, the collection efficiency, and the extend of supercooled droplets. Icing is described as trace, light, moderate or severe which depends on the type of clouds, the type of aircraft, and the type of icing protection systems. The distribution of potential aircraft icing zones is mainly a function of cloud structure and temperature, which in turn vary with altitude, location and season. TRUNCATED
Keywords
Inflight aircraft icing;Ice accretion modeling
Report Number
DREV-CR-926;CDT-P2218 — Contractor Report
Date of publication
01 Mar 1997
Number of Pages
130
DSTKIM No
97-03622
CANDIS No
503582
Format(s):
Hardcopy;Hardcopy;Document Image stored on Optical Disk

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