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基于扰流片式推力矢量发动机的推力调节模型研究
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作者 张汝衡 杨军 +2 位作者 姚保江 杨石林 张兵峰 《推进技术》 EI CAS CSCD 北大核心 2023年第2期296-304,共9页
为研究扰流片式推力矢量机构通过推力调节,实现诱饵弹定高悬浮机动飞行的机理,本文在拟合得到推力调节幅度和伺服机构位移的函数关系的基础上,建立了一种扰流片式推力矢量系统模型。模型根据俯仰、偏航和高度通道输出的期望推力指令,反... 为研究扰流片式推力矢量机构通过推力调节,实现诱饵弹定高悬浮机动飞行的机理,本文在拟合得到推力调节幅度和伺服机构位移的函数关系的基础上,建立了一种扰流片式推力矢量系统模型。模型根据俯仰、偏航和高度通道输出的期望推力指令,反算出伺服机构位移,进而控制扰流片组合差动,对悬浮式诱饵弹产生主推力调节和侧向力调节。诱饵弹60m定高飞行仿真试验表明:推力矢量系统模型输出的主推力和侧向力与控制系统输出的期望推力一致,推力响应时间在100ms内。说明该模型能够实现诱饵弹定高悬浮和悬浮机动飞行中的姿态调节,且模型在快响应系统中具有实现性。扰流片非同步旋转的原理样机点火试验表明:推力矢量系统模型产生的主推力与试验结果偏差在5%以内,侧向力与试验结果偏差在3%以内,验证了该模型计算得到的推力矢量具有正确性。 展开更多
关键词 诱饵弹 扰流片 推力矢量系统模型 推力矢量调节 悬浮机动
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Suspension principle of deep-ocean nodule collector 被引量:1
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作者 郑皓 刘少军 胡琼 《Journal of Central South University》 SCIE EI CAS 2014年第3期920-925,共6页
To make sure that the nodule collector can walk on the soft sediments of seafloor effectively, suspension principle of deep-ocean nodule collector is proposed. The supporting and driving mechanisms are separated to av... To make sure that the nodule collector can walk on the soft sediments of seafloor effectively, suspension principle of deep-ocean nodule collector is proposed. The supporting and driving mechanisms are separated to avoid collector sinking. The supporting mechanism is a streamlined body with large and smooth supporting area. The grounding pressure is reduced to 0.5- 1 N/cm2 to make sure that the sinkage is limited. The impellers serve as the driving mechanism to supply enough driving power. The position between the supporting mechanism and the driving mechanism can be adjusted according to the operating condition to decrease the walking resistance and to increase driving efficiency. The test results indicate that the collector can walk on the surface of the soft sediments with the limited sinkage. The traction forces were up to 800 kg and the sinkage of the impeller was under the limitation. 展开更多
关键词 deep-ocean mining suspension principle NODULE COLLECTOR SINKING
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