超声电喷推进微细驻波形成及影响因素分析
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摘要
对超声电喷推进微细驻波进行了研究,试验观测了微细驻波形成形态,并在不同频率下对比分析了微细驻波波长的理论值和试验值;同时分析了不同推进剂条件下,振动频率对微细驻波波长和形成驻波所需振幅的影响规律。结果表明:不同频率下,形成微细驻波波长的理论值和试验值具有较好的一致性;微细驻波的波长和振幅随着振动频率的增大而减小,同时推进剂的粘度越大,形成微细驻波所需的振幅也越大。
The formation mechanism of ultrasonic standing waves was investigated through theoretical study and experiments.The formation of micro-standing waves was observed by microscope;at the same time,the theoretical and experimental values of the wavelength were analyzed at different frequencies.The influences of vibration frequency on the wavelength of standing waves and the amplitude required to form the standing wave were studied when employing different propellants.The results show that theoretical and experimental values of the wavelength of standing waves are in good agreement.The wavelength and amplitude of the standing waves decrease with the increase of the vibration frequency.When the viscosity ofthe propellant is larger,the amplitude required to form a standing wave is greater.
The formation mechanism of ultrasonic standing waves was investigated through theoretical study and experiments.The formation of micro-standing waves was observed by microscope;at the same time,the theoretical and experimental values of the wavelength were analyzed at different frequencies.The influences of vibration frequency on the wavelength of standing waves and the amplitude required to form the standing wave were studied when employing different propellants.The results show that theoretical and experimental values of the wavelength of standing waves are in good agreement.The wavelength and amplitude of the standing waves decrease with the increase of the vibration frequency.When the viscosity ofthe propellant is larger,the amplitude required to form a standing wave is greater.
引文
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