Analysis on Effect of Seawater Wet Environment and Intermittent Brake Dehumidification on Aircraft Braking Performance

WEI Jinting; LU Shangzhi; MA Shaojie

doi:10.7643/issn.1672-9242.2026.06.009

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Equipment Environmental Engineering ›› 2026, Vol. 23 ›› Issue (6) : 101-106. DOI: 10.7643/issn.1672-9242.2026.06.009

Aviation and Aerospace Equipment

Analysis on Effect of Seawater Wet Environment and Intermittent Brake Dehumidification on Aircraft Braking Performance

WEI Jinting, LU Shangzhi, MA Shaojie

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Abstract

The study aims to analyze the changing trend and amplitude of the braking performance of aircraft wheel in the seawater wet environment and after intermittent brake dehumidification, to provide an experimental basis for the design and use of aircraft in marine atmospheric environments. The essential reasons for the changes in aircraft braking performance under the action of seawater and the working principle of intermittent brake dehumidification were analyzed at the micro level. Then, braking tests were conducted on the main wheel of a domestic large amphibious aircraft under three working conditions: dry state, wet state of seawater with different soaking hours, and intermittent brake dehumidification. The influences and variation ranges of the seawater wet state environment, soaking hours, and intermittent brake dehumidification on the braking deceleration rate were obtained. Compared with the dry environment, the braking deceleration rate decreased in the seawater wet environment. As the soaking hours increased, the braking deceleration rate decreased. After more than 10 minutes, the deceleration rate attenuation tended to level off. After intermittent brake dehumidification, the deceleration rate of the aircraft's braking increased, slightly lower than the average deceleration rate in the dry state, and the deceleration rate recovered to 91.29% of that in the dry state. The longer the soaking hours, the greater the increase in the deceleration rate after intermittent brake dehumidification. The results show that the seawater wet environment can lead to a decline in the braking performance of aircraft, and its negative impact has a significant time limit. The 10-minute period is a critical node for performance degradation, and subsequent changes slow down. intermittent brake dehumidification can restore the braking performance of an aircraft to over 90% of its braking capacity in dry state, and it can be used as an effective means to quickly restore braking capacity in marine environments.

Key words

amphibious aircraft / seawater / wet state / intermittent brake / dehumidification / braking performance

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WEI Jinting, LU Shangzhi, MA Shaojie. Analysis on Effect of Seawater Wet Environment and Intermittent Brake Dehumidification on Aircraft Braking Performance[J]. Equipment Environmental Engineering. 2026, 23(6): 101-106 https://doi.org/10.7643/issn.1672-9242.2026.06.009

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