Closed-Loop Control Strategy for Simulated Smoke Concentration in Aircraft Cargo Compartment Mock-Up

Chen, Xiyuan; Yan, Xiaoshuang; Yang, Jianfei

doi:10.1007/s10694-023-01433-4

Fire Technol

2023

DOI: 10.1007/s10694-023-01433-4

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Closed-Loop Control Strategy for Simulated Smoke Concentration in Aircraft Cargo Compartment Mock-Up

Xiyuan Chen

Xiaoshuang Yan

Jianfei Yang

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2024

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Study on Response Time Hysteresis Model of Smoke Detectors in Aircraft Cargo Compartment

Cui,

Ruan,

Wang

et al. 2024

Fire

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A fire in the cargo compartment has a major impact on civil aviation flight safety, and according to the airworthiness clause of the CCAR-25, the detector must sound an alarm within 1 min of a fire in the cargo compartment. As for the cargo compartment of large transport aircrafts, the internal space is high and open, and the smoke movement speed becomes slower with significant cooling in the process of diffusion. Hysteresis can occur in smoke detectors because of their internal labyrinth structure, which causes the detector’s internal and external response signals to be out of sync. This research employs a numerical simulation to examine the detector response parameters under an ambient wind speed of 0.1–0.2 m/s and fits a Cleary two-stage hysteresis model, where τ1= 0.09u−1.43 and τ2= 0.67u−1.59. Finally, multiple full-scale cargo cabin experiments were conducted to validate the prediction model. The results show that the model’s predicted alarm range is 43.1 s to 49.0 s, and the actual alarm time obtained by the experiment falls within this interval, confirming the model’s accuracy and providing theoretical support for the structural design and layout of the aircraft cargo cabin smoke detector.

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Study on Response Time Hysteresis Model of Smoke Detectors in Aircraft Cargo Compartment

Cui,

Ruan,

Wang

et al. 2024

Fire

View full text Add to dashboard Cite

show abstract

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Closed-Loop Control Strategy for Simulated Smoke Concentration in Aircraft Cargo Compartment Mock-Up

Cited by 1 publication

References 14 publications

Study on Response Time Hysteresis Model of Smoke Detectors in Aircraft Cargo Compartment

Study on Response Time Hysteresis Model of Smoke Detectors in Aircraft Cargo Compartment

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