科技爱好与博览

双子Cozy （转至羽翼中国）

　　TWIN COZY

　　摘自EAA(美国试验飞机协会)98年5月刊

　　作者BY JACK COX

　　编译：Howard

　　去年的EAA飞行聚会Sun'n Fun(阳光与欢乐聚会,EAA 航空爱好者的年度聚会)中最有创意家庭自制飞机之一当属来自委内瑞拉的Ruben Leon 和Carlos Leon俩兄弟所制造的Cozy YV-22X;他们驾驶这架Cozy飞跃加勒比海来此参加Sun'n Fun. Cozy的机身设计来自Nat Puffer的设计,而这家飞机火墙之后的一切才是为何家庭自制飞机拥有 "试验性"这一词汇的一个完美样列.

　　One of the most innovative home-builts we saw during all of last year was the Cozy YV-22X built by brothers Ruben Leon (EAA 546416) of Valencia, Venezuela and Carlos Leon (EAA 554073) of Caracas, Venezuela and flown by them across the Caribbean to Sun'n Fun '97. The Cozy airframe was essentially straight off Nat Puffer's drawings, but everything aft of the firewall was a perfect example of why homebuilts have the word "experimental" written on their sides.

　　The Leon Cozy appeared to be just another example of that popular design when it appeared in the pattern at Lakeland last spring, but when close enough to be heard, it was obvious something was different about it. Whatever lurked beneath its cowling was definitely not the usual Lycoming! A further difference was apparent when it came whistling by on final: it had counter rotating propellers. Joining the crowd that quickly swarmed around the airplane when it was shut down at its parking spot, I soon learned that it was powered by two little four-cylinder 1,600 cc Suzuki Swift auto engines, each independently driving its own Warp Drive three-blade propeller through a shaft-within-a shaft or coaxial drive mechanism. One engine faced forward and the other aft, and each drove its own drive shaft through four Micro-V belts. Just getting two of the engines and their drive systems into a space normally occupied by a four-cylinder Lycoming was obviously quite a feat of engineering, and it seemed redundant to the point of embarrassment to ask about the feasibility of the configuration...after all, the Leons had just flown over some 1,200 miles of open ocean to get to Lakeland, hadn't they?

　　当Leon的Cozy去年春天出现在Lakeland的飞机阵列当中的时候,看起来跟不过是流行设计的一个普通样列而已,不过当你靠近她的时候,你会听出这架飞机有点不寻常:掩藏在发动机整流罩下面的并不是通常的莱康明!当她呼啸而过的时候你会发现更多的不同是她使用的是双桨对转推进方式.当她降落之后关闭了发动机,我靠上前去很快发现这架Cozy采用了两台四缸1600cc铃木雨燕汽车小发动机,每台通过皮带各自驱动一个伞叶螺旋桨,两个螺旋桨共轴对转.两台发动机头尾相反左右并置在推力线两侧.精巧的设计使两台发动机正好占据了原来四缸莱康明发动机的空间。在Leon兄弟驾驶她飞越了1200英里的海洋来到Lakeland之后，质疑这样设计的可能性都显得多余了。

　　Later in the week, I had the opportunity to talk to the Leons about their aircraft and found that its engine installation is still another validation of the old chestnut, "necessity is the mother of invention." First, you should know that the Leons are not rank amateurs. Ruben Leon, who is 43, is an aerospace engineering graduate of Catholic University in Washington, DC and has a Masters degree from Princeton University in both aerospace and mechanical engineering.

　　这周晚些时候，我跟Leon兄弟聊了聊，发现其发动机设置又是一个老原理的新例证"需求是创新之母"。 首先，你需要了解的是Leon兄弟并非是业余爱好者。Ruben Leon，43岁，本科毕业于华盛顿天主教大学航空航天工程专业，研究生毕业于普林斯顿航空和机械工程专业。