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The motion of a rocket is governed by the conservation of momentum principle. A rocket's momentum changes by the same amount (with the opposite sign) as the ejected gases. As time goes by, the rocket's mass (which includes the mass of the remaining fuel) continuously decreases, and its velocity increases. Therefore, the principle of conservation of momentum is used to explain the dynamics of a rocket's motion. The ideal rocket equation gives the change in velocity that a rocket...
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Anomaly Detection Method for Rocket Engines Based on Convex Optimized Information Fusion.

Hao Sun1, Yuehua Cheng1, Bin Jiang1

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This study introduces a novel data fusion algorithm for rocket engine anomaly detection, improving reliability and safety. The method enhances detection accuracy and speed by integrating engine measurements with rocket flight data.

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Area of Science:

  • Aerospace Engineering
  • System Safety
  • Data Science

Background:

  • Rocket power systems are critical for launch vehicle reliability and safety.
  • Limited engine sensor data hinders fast and accurate anomaly detection.
  • Integrating diverse data sources is essential for robust monitoring.

Purpose of the Study:

  • To develop an optimal data fusion scheme for enhanced rocket engine anomaly detection.
  • To improve the speed and accuracy of identifying engine faults during flight.
  • To leverage rocket flight state data alongside engine measurements.

Main Methods:

  • Proposed a data set information fusion algorithm based on convex optimization.
  • Utilized convex quadratic programming to determine optimal fusion parameters.
  • Employed the adaptive CUSUM algorithm for anomaly detection of engine faults.

Main Results:

  • The proposed algorithm demonstrated higher detection accuracy compared to traditional methods.
  • Achieved a lower detection time for engine faults.
  • Successfully integrated disparate data distributions from engine measurements and flight states.

Conclusions:

  • The novel data fusion algorithm significantly enhances rocket engine anomaly detection capabilities.
  • Integrating flight state data provides a valuable, expanded information source.
  • The approach offers a promising solution for improving launch vehicle safety and reliability.