It's a single rotor helicopter powered by batteries made by US Hybrid.

萤火虫项目是一种单旋翼直升机，使用美国混合动力(US Hybrid)公司制造的电池。

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For the current helicopter of single main rotor with tail rotor, the effect of inflow models with different characteristics on helicopter trim and digital simulation was discussed.

以常规单旋翼带尾桨直升机为对象，讨论均匀与非均匀入流模型对直升机飞行数值仿真的影响。

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At first, control law of the autopilot equipment was given, then the non-dimensional dynamic equations of the single rotor helicopter with autopilot equipment were derived.

文中首先给出自动驾驶仪的调节规律，继而列出装备有自动驾驶仪的单旋翼带尾桨式直升机的无量纲运动方程。

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