Runway Deicing Product Anti/Deicing Performance Assessment: Review and Future Directions

Brassard, Jean-Denis; Laforte, Caroline; Tremblay, Marc Mario; Volat, Christophe

doi:10.4271/2019-01-1974

Cited by 1 publication

(1 citation statement)

References 2 publications

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“…Most of the accidents occur during winter since the runway is contaminated by snow, slush, ice, brine or water, rendering the surfaces slippery [2]. They all have a negative effect on braking performance, significantly reducing the friction between aircraft tires and the runway surface, inhibiting maneuverability [1][2][3][4][5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Assessment of Runway Surface Conditions by British Pendulum Testing under the Global Reporting Format Winter Conditions

et al. 2022

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Poor braking performance on runways during winter is one of the most significant factors causing runway excursions. The International Civil Aviation Organization (ICAO) proposed a standardized method, named the Global Reporting Format (GRF), to establish runway surface conditions based on human observers. The GRF includes the description of most winter conditions. This work aimed at reproducing the GRF winter conditions in the laboratory, and to monitor the effect of the surface conditions, both without surface treatment and with surface treatment using liquid runway de-icing products (RDP) in both de-icing and anti-icing modes, using the British Pendulum Tester (BPT). The reproduction of the GRF winter conditions was possible in the laboratory since the BPT results correlated well with the GRF ratings. The worst conditions retained snow on ice. Wet conditions obtained with water and RDPs (potassium formate KFO, potassium acetate KAC and hybrid glycol-KAC HYB) behave similarly, indicating that RDPs alone on a runway for prevention are not any more dangerous than just water. The range from wet to dry, equivalent to a British Pendulum Number (BPN) from ~40 to ~50, was considered as good conditions on the runway. All the RDPs tested in the study improved the BPN from untreated conditions. In most of the conditions, the RDPs improved the BPN to values in the range of favorable conditions. KFO and KAC reacted almost in the same way for each condition. However, the HYB was better in conditions with ice. The obtained results demonstrated that simulated laboratory winter conditions could be used to determine the efficiency of RDPs in both de-icing and anti-icing modes.

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