Study on Improved Flight Coefficient Estimation and Trajectory Analysis of a Flying Disc through Onboard Magnetometer...

Area of Science:

• Aerospace Engineering
• Physics of Rotating Bodies
• Geophysics

Background:

• Accurate estimation of flight dynamics is crucial for predicting the trajectory of rotating objects like flying discs.
• Conventional methods may struggle with high rotation rates and dynamic flight conditions.

Purpose of the Study:

• To develop a novel and accurate method for estimating the flight coefficient of a flying disc.
• To enable precise prediction of the disc's flight trajectory using onboard sensor data.

Main Methods:

• Utilizing magnetic data from a miniaturized sensor module onboard the flying disc.
• Applying frequency domain analysis to determine the rotational rate from geomagnetic field measurements.
• Deriving the yaw damping derivative coefficient based on the estimated rotational rate.

Main Results:

• The proposed method accurately estimates the rotational rate and flight coefficient.
• Reference rotation table tests and real flight tests validate the method's performance.
• The estimated coefficient significantly improves the accuracy of flight trajectory prediction compared to simulations.

Conclusions:

• The novel algorithm effectively leverages magnetic data for aerodynamic coefficient estimation.
• Onboard sensor integration and frequency analysis provide a robust solution for dynamic flight analysis.
• This method enhances the predictability of flying disc trajectories, with potential applications in aerodynamics and sports science.