Temperature elevation of aircraft tyre surface at touchdown with pre-rotations

Li, Yu; Wang, Weiji

doi:10.1007/s13272-023-00652-3

Cited by 3 publications

(1 citation statement)

References 15 publications

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“…Our previous study was one of the few to calculate tread temperature based on a developed model theoretically. One paper validated the use of Laplace’s equation to calculate the tread temperature by comparing the results with those from the finite element analysis (FEA) software, and the other described how to calculate the tread temperature in a simplified model (assuming constant contact area and aircraft load) (Li and Wang, 2022; Li and Wang, 2023). Based on the previous basis, this paper goes beyond calculating the “maximum tread temperature” and “tread centreline temperature” achieved by most research.…”

Section: Introductionmentioning

confidence: 99%

Three-dimensional temperature distribution of aircraft tyre tread at touchdown

Liu

Wang

2023

AEAT

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Purpose The aircraft’s tyres are forced to spin up at touchdown. A considerable amount of frictional energy will be converted into heat, raising the tread temperature and leading to thermal wear. This study aims to develop a model to analyse the tread heat and discuss the effectiveness of two wear reduction methods. Design/methodology/approach The tread temperature is calculated using Laplace’s Equation. The efficiency of pre-rotation and soft landing in reducing tyre heat is studied using a developed three-dimensional heatmap method. Findings The result indicates that pre-rotation can significantly lower landing gear’s heat generation at touchdown. The soft landing, instead, has an insignificant or counterproductive effect. Research limitations/implications The pre-rotation can significantly increase the tyre’s lifespan and cut the replacement cost. The emission of tyre particles into the environment can be reduced to protect the planet and human health. Originality/value Few studies have used a theoretical model to estimate the tread temperature. The existing studies have only dealt with the maximum tread temperature or the tread centreline temperature, which is insufficient to discuss the heat across the entire tread. However, the heatmap method in this paper can do the job.

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Section: Introductionmentioning

confidence: 99%

Three-dimensional temperature distribution of aircraft tyre tread at touchdown

Liu

Wang

2023

AEAT

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Tyre heat of multi-wheel bogie undercarriage at touchdown

Li,

Wang

2024

CEAS Aeronaut J

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Almost all studies on tyre heat during aircraft touchdown are based on the assumption that the tyres touch the ground simultaneously, and the aircraft’s load is evenly distributed among each tyre. However, the unique design of multi-wheel bogie undercarriage on wide-body aircraft gives the tyres a specific touchdown sequence. The friction, heat, and thermal wear they face are entirely different. Therefore, this study establishes a model to simulate the dynamics of the multi-wheel bogie undercarriage and relies on Laplace’s equation to calculate the treads’ heat generation and temperature rise. The innovative three-dimensional tread temperature display method can further determine the tyre’s thermal wear. It is found that faster landing increases tyre heat by extending the friction time and distance for all tyres. Softer landing increases the independent rotation time of the early-touched tyres, thus significantly raising the tread temperature due to high frictional power density around the tread centreline areas.

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Thermal Penetration of Aircraft Tyre Tread at Touchdown

Li,

Wang

2024

Int. J. Aeronaut. Space Sci.

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Most studies of friction and heat conduction in aircraft tyres at touchdown are limited to the tread surface. However, it is necessary to know the thermal penetration inside the tread to study the quantity of the potential decomposed and lost material by the frictional heat. Additionally, a high tread surface temperature does not necessarily guarantee a stronger thermal penetration inside the tread because of several factors. Therefore, it is necessary to establish a relationship between the tyre tread surface temperature and the internal heat penetration under the aircraft touchdown scenario. A model is established on MATLAB to simulate the aircraft tyre dynamics and tread heat conduction at touchdown. This model is capable of calculating the temperature increase in the tread, both on the surface and inside. It can also be used to determine the depth of thermal decomposition caused by frictional heat. Additionally, the study found that the Thermal Decomposition Depth to Surface Temperature Ratios (DTRs) are similar across the tread (the depth of thermal decomposition at each part of the tread surface is proportional to the surface temperature). Therefore, it can estimate the thermal penetration throughout the tread by simply calculating the surface temperature of the entire tread and the average DTR at several points of interest. The study provides a more straightforward approach for aircraft tyre thermal wear prediction and future research.

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Temperature elevation of aircraft tyre surface at touchdown with pre-rotations

Cited by 3 publications

References 15 publications

Three-dimensional temperature distribution of aircraft tyre tread at touchdown

Three-dimensional temperature distribution of aircraft tyre tread at touchdown

Tyre heat of multi-wheel bogie undercarriage at touchdown

Thermal Penetration of Aircraft Tyre Tread at Touchdown

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