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直-20是我国目前正在研制的一款10吨级中型通用直升机,主要满足军事空运、民用运输的多种使用要求。该机曾经在2006年珠海航空展会上展出了实体模型,引起了众多参观者的关注。直-20研制项目于2010年立项,原计划2014年试飞。结果不仅很快研制出了原型机,而且直-20于2013年12月23日,还提前实现了首飞成功。一、技术要求直-20是一款采用典型的双发单旋翼单尾桨布局的中型通用直升机(图1)。它要求采用成熟技术在
Straight-20 is a 10-ton medium-sized general helicopter currently under development in China that mainly meets the multiple requirements for military air transport and civilian transport. The aircraft was exhibited at the Zhuhai Air Show in 2006, the physical model, attracted the attention of many visitors. Straight -20 development project in 2010, originally planned flight test in 2014. As a result, not only was the prototype rapidly developed, but Straight-20 was also ahead of its first flight on December 23, 2013. First, the technical requirements Straight-20 is a mid-size universal helicopter with a typical twin-rotor single-tail paddle layout (Figure 1). It requires mature technology