Helicopter fire extinguishing medium precision delivery trajectory correction and attitude control system

By collecting and calculating the hysteresis displacement of the bucket and the dispersion process of the medium in real time, a concentration field distribution map is generated, which solves the problem of low delivery accuracy in helicopter bucket fire extinguishing systems and realizes precise fire extinguishing in complex environments.

CN122209017APending Publication Date: 2026-06-16TIANJIN FIRE SCI & TECH RES INST OF MEM
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
TIANJIN FIRE SCI & TECH RES INST OF MEM
Filing Date
2026-05-08
Publication Date
2026-06-16

AI Technical Summary

Technical Problem

In existing technologies, helicopter bucket fire extinguishing systems fail to effectively consider the dynamic hysteresis displacement of the bucket in three-dimensional space and the dispersion characteristics of the liquid medium, resulting in low delivery accuracy and poor fire extinguishing effect, especially in complex airspace environments where precise delivery cannot be achieved.

Method used

The system employs an airborne data acquisition unit, an airspace wind field sensing unit, a fire field data acquisition unit, a digital modeling and dynamic correction unit, and a medium dispersion attitude prediction unit to collect and calculate the hysteresis displacement of the bucket and the medium dispersion process in real time, generate a medium dispersion concentration field distribution map, and determine the optimal release time through the release decision unit.

Benefits of technology

It achieves high-precision delivery of extinguishing media in complex airspace environments, significantly improving extinguishing efficiency, avoiding ineffective operations, and ensuring that the coverage and concentration of extinguishing media meet the requirements.

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Abstract

The application discloses a trajectory correction and attitude control system based on precise delivery of fire extinguishing medium of a helicopter, belongs to the technical field of aviation fire fighting, and is characterized in that: through multi-source data fusion sensing and multi-body dynamics modeling, the system can solve the lag displacement of a hanging bucket relative to the flight state of the helicopter in real time and dynamically correct the physical model of medium delivery, effectively eliminates the medium delivery trajectory prediction error caused by sudden changes in the attitude of the helicopter, swinging of the hanging bucket and wind shear, and generates a concentration field distribution map through simulation of the breaking and atomization process of fire extinguishing medium droplets, so that the quantitative estimation of the fire extinguishing coverage and concentration is realized. Finally, the best delivery time is determined according to the comprehensive analysis and judgment of the fire environment parameters, the fire field characteristic parameters and the concentration field distribution map, and the system is particularly suitable for complex fire field environments such as canyon turbulence and hot updraft.
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