Lightweight design method for the receiving antenna of a propeller telemetry system
The main function of the propeller telemetry system is to measure the vibration stress and blade angle of the pro-peller in flight.The receiving antenna of the telemetry system is mounted on the stationary components in the engine nacelle,and integrates RF coils and induction coils.The receiving antenna was designed according to the specific structure of the en-gine and the nacelle.In the initial scheme,the receiving antenna was installed on the reducer casing and firmly connected.But the weight of the antenna was 10 kg,which could not meet the design requirements.Based on the mechanical model analysis,the lightweight design method for the receiving antenna was proposed.The installation position was re-selected,the cantilever length,section bending stiffness,bolt layout and material were optimized,and the total weight of the receiving antenna was re-duced to 1.5 kg.The random vibration analysis was carried out,and all the indexes met the installation requirements.This study can provide experience reference for the design of ring antenna parts on the engine.
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