We first analyzed the force and motion of naval aircraft during launching process.Further,we investigated the ship deck with the form of a ramp and established deck motion model and ship airwake model.Finally,we condu...We first analyzed the force and motion of naval aircraft during launching process.Further,we investigated the ship deck with the form of a ramp and established deck motion model and ship airwake model.Finally,we conducted simulations at medium sea.Results showed that the effects of deck motion on takeoff varied with initial phases,and airwake could help reducing aircraft′s sinkage.We also found that the deck motion played a major role in the effects caused by the interaction of deck motion and ship airwake.展开更多
A numerical method is proposed for predicting six degree of freedom ship motion with green water on deck.Numerical results are presented which show the dynamic effect of water on deck on the ship motion.
针对直升机着舰过程中的下滑进场环节,从流场环境对直升机飞行品质影响的角度出发,研究了直升机着舰策略。分析了下滑进场区域的流场分布,研究表明流场的分布与距离甲板的高度相关,高度越低,气流速度均值越大,且下洗气流主要集中在迎甲...针对直升机着舰过程中的下滑进场环节,从流场环境对直升机飞行品质影响的角度出发,研究了直升机着舰策略。分析了下滑进场区域的流场分布,研究表明流场的分布与距离甲板的高度相关,高度越低,气流速度均值越大,且下洗气流主要集中在迎甲板风方向的路线区域,对直升机的飞行品质造成影响。分析了不同甲板风(Wind on deck,WOD)条件下直升机平衡状态量,分别从旋翼所需功率、操纵量和机体姿态等方面对进场方式进行了研究,表明合理的进场方式有利于着舰安全。展开更多
基金supported by the National Natural Science Foundation of China(No.61304223)the Specialized Research Fund for the Doctoral Program of Higher Education(No.20123218120015)
文摘We first analyzed the force and motion of naval aircraft during launching process.Further,we investigated the ship deck with the form of a ramp and established deck motion model and ship airwake model.Finally,we conducted simulations at medium sea.Results showed that the effects of deck motion on takeoff varied with initial phases,and airwake could help reducing aircraft′s sinkage.We also found that the deck motion played a major role in the effects caused by the interaction of deck motion and ship airwake.
文摘A numerical method is proposed for predicting six degree of freedom ship motion with green water on deck.Numerical results are presented which show the dynamic effect of water on deck on the ship motion.
文摘针对直升机着舰过程中的下滑进场环节,从流场环境对直升机飞行品质影响的角度出发,研究了直升机着舰策略。分析了下滑进场区域的流场分布,研究表明流场的分布与距离甲板的高度相关,高度越低,气流速度均值越大,且下洗气流主要集中在迎甲板风方向的路线区域,对直升机的飞行品质造成影响。分析了不同甲板风(Wind on deck,WOD)条件下直升机平衡状态量,分别从旋翼所需功率、操纵量和机体姿态等方面对进场方式进行了研究,表明合理的进场方式有利于着舰安全。
