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山鹰让我国失速尾旋领域向前跨进一大步
山鹰飞机是唯一一型由我国独立完成失速尾旋试飞的军用飞机。失速尾旋作为飞机训练飞行中类似于“禁飞区”的项目,一般是因为飞行员操纵不当造成飞机迎角过大或遇到突风而引发,由于尾旋的不可控性,极易造成飞机坠毁。在山鹰失速尾旋试飞过程中,试飞员进入各种尾旋达30余次,飞机负迎角最大达到50度,其中两次还进入了风险极大的倒飞尾旋,后来试飞员终于总结出了“三中立”的尾旋改出方法,即改出尾旋要同时做到杆、舵居中,使飞机的副翼、方向舵、平尾都处于中立位置。采用“三中立”后,即使试飞员撒手,飞机也能自己改出尾旋。特别是在后几次试飞时,飞机已拆掉了失速反尾旋保护系统,飞机是在原机状态下完成的失速尾旋试飞。自此,山鹰改出尾旋的成功率达到100%,最短达到2秒,这也使我国在失速尾旋领域又向前跨进了一大步。
作为一款完全自主研发生产的飞机来说,山鹰没有刻意追求飞机的“高颜值”,而是在积极满足性能使用、好用耐用、用好用足性能等方面下足力气,这让山鹰在实践运用中不仅展示出出色的性能,也大大降低了使用成本,是一款名副其实“高性价比、物超所值”的好飞机。从军方用户的使用情况来看,山鹰是目前飞行员训练使用中出勤率最高(超过90%)的新型高级教练机!而据2015年10月24日国防部网的披露,山鹰教练机正式在空军院校服役,成为国内首款走进院校的新型高级教练机。
几年前,山鹰的外贸出口型号叫做FTC-2000,这里有何玄机呢?据环球时报记者了解,该机于新世纪初开始研制,2003年12月13日成功首飞,“2000”寓意“新世纪”;F即Fighter战机之意,T即Trainer教练机之意,这说明她不仅是新型高级教练机,同时也定位于轻型多用途作战飞机;而“C”既表示“China”(中国),也有“飞行器”(Craft)的意思。
“海山鹰”何时能够正式上航母?
山鹰首架外贸飞机的下线现场,大背板反复展播着山鹰飞机的经典镜头,有的是实景拍摄,有的是后期合成,其中闪过的一张画面颇为引人注目:两架海军涂装的海山鹰低空飞过海面,而海面上正是砥砺航向的中国辽宁舰航母编队,画面的寓意十分明显。2017年3月25日出版的中国航空报,登载了记者姜春燕对话中航工业贵飞党委书记、董事长王文飞的文章,在分析贵飞的机遇时,王文飞提及:抢抓山鹰飞机批量订货的机遇,确保按期高质量交付用户,充分占领市场份额;抢抓山鹰改进型号的发展机遇,完善性能,尽快实现上舰。
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