摘要:
开展水上飞机带动力模型规则波试验,对试验装置、采集方式进行了设计,解决了常规采集方式存在信号阶跃式突变的技术难题。通过试验得到了模型在波浪上运动时纵摇、升沉和过载响应曲线随遭遇频率、波长的变化规律。结果表明:纵摇和升沉运动响应曲线具有单峰值的特点,在波长为1.5~3.5倍机身长度时达到峰值,过载响应曲线具有双峰值,第一谐振波长在1.5~3.5倍机身长度范围内,第二谐振波长为0.5倍机身长度。根据模型运动响应特性,对飞机在涌浪上的运动响应进行了分析,对飞机在涌浪上起降使用环境的选择提出了参考意见。
Abstract:
With newly designed test devices and data acquisition mode,a powdered-model-reg-ular-wave experiment of a seaplane is conducted.The changes of the experimental method can ef-fectively eliminate the negative impacts of the step-type signal mutation.Based on the test re-sults,the pitching,heaving motion and overload response variation laws with encounter frequen-cy and wavelength are obtained.The results show that the pitching and heaving motion response curve has a single peak,and the corresponding resonant wavelength varies from 1 .5 to 3 .5 times the hull length;the overload response curve has double peaks,and the first resonant wavelength varies from 1.5 to 3.5 times the hull length,while the second resonant wavelength is about 0.5 times the hull length.Based on these motion properties,the motion response of the full scale seaplane to waves is analyzed,and also some suggestions about the selection of the operational environmental condition are offered.
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