Constellation, le dépôt institutionnel de l'Université du Québec à Chicoutimi

Résumé

The fluids used for de-icing and anti-icing procedures for aircraft on the ground are evaluated by standard performance tests conducted in a cold chamber. The “water spray endurance test” (WSET) is a laboratory simulation of the supercooled precipitation case which permits the identification of the period of protection provided, by a given fluid, against ice formation. The present work uses a simple mathematical model representing the WSET situation in order to provide analytical support to the variation of the protection time versus precipitation intensity. The numerical simulation does not account for all significant factors but is consistent with the general experimental behaviour and confirms the power law relationships between protection time and precipitation intensity.