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INTERNATIONAL: Euro-area and US activity will diverge
Details
DOI: 10.1108/OXAN-ES281495
ISSN: 2633-304X
Keywords
Geographic
Topical
Yu Li and Weiji Wang
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…
Abstract
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.
Details
Keywords
UNITED STATES: Flash PMI supports soft landing outturn
Details
DOI: 10.1108/OXAN-ES282917
ISSN: 2633-304X
Keywords
Geographic
Topical
INTERNATIONAL: Soft GDP landing masks regional shifts
Details
DOI: 10.1108/OXAN-ES282573
ISSN: 2633-304X
Keywords
Geographic
Topical
UNITED STATES: Fed policy will aim for soft landing
Details
DOI: 10.1108/OXAN-ES279795
ISSN: 2633-304X
Keywords
Geographic
Topical
Despite fears of a recession, the US economy continues to add jobs and employers report difficulties attracting and retaining workers. Wage growth is decelerating fitfully…
Details
DOI: 10.1108/OXAN-DB281325
ISSN: 2633-304X
Keywords
Geographic
Topical
INDIA: Moon landing will boost space programme
Details
DOI: 10.1108/OXAN-ES281474
ISSN: 2633-304X
Keywords
Geographic
Topical
This is driving a rally in government bonds and equities. However, labour markets remain tight, fuelling wage growth and keeping services inflation above central banks’ 2…
Details
DOI: 10.1108/OXAN-DB283981
ISSN: 2633-304X
Keywords
Geographic
Topical
In late August, they landed near the lunar south pole. India thereby became the fourth country to achieve a soft landing on the moon, and the first to do so in the lunar south…
Details
DOI: 10.1108/OXAN-DB282587
ISSN: 2633-304X
Keywords
Geographic
Topical
UNITED STATES: Lunar landing will help NASA