德国专家团在1912年11月3日上午抵达“绿洲”基地。
三辆越野车卷着沙尘驶入大门，下来六个人。为首的是奥托·科勒，四十多岁，个子不高但精悍，鹰钩鼻，深眼窝，看人时目光锐利。
陈峰带着全体人员在跑道旁列队迎接。
“科勒博士，欢迎来到兰芳。”陈峰用流利的德语说道。
科勒明显愣了一下，随即伸出手：“陈先生，您的德语很好。”
“学过一些。”陈峰和他握手，感觉到对方手掌的力度，“这位是我们的技术总监赵天翔，这位是首席工程师马师傅……”
——介绍完毕后，科勒直入主题：“我们时间有限，三个月。带我们看你们的设施和飞机。”
陈峰带他们参观。机库里，“雨燕-I”和两架布莱里奥XI并排停放。车间里，工程师们正在加工“雨燕-II”的零件。教室里，学员们正在上理论课。
德国人看得很仔细，不时用德语低声交流。陈峰听懂了一些：
“工艺粗糙，但设计理念先进……”
“翼型很特别，没见过……”
“发动机太老旧……”
参观完，科勒在会议室坐下，开门见山：“陈先生，我们接到柏林指示，为你们提供航空技术咨询。但咨询范围有限制：不涉及军用技术，不涉及德国最新研究成果。”
“理解。”陈峰点头，“我们主要需要帮助在三个方面：发动机改良、结构优化、飞行训练。”
“可以。”科勒说，“但我有个问题：你们这些飞机图纸，从哪里来的？”
又来了。陈峰早有准备：“我们自己设计的。借鉴了欧洲的先进理念，结合了实际条件。”
“自己设计？”科勒身后的一个年轻工程师忍不住插话，“可是这些气动布局……有些概念我们研究所还在纸上阶段！”
陈峰微笑：“或许是因为我们不受传统束缚，敢想敢做。”
科勒深深看了他一眼，没再追问。接下来的谈话转入具体技术问题。
德国专家的效率很高。第二天就开始工作。
发动机专家汉斯·费舍尔一头扎进车间，把布莱里奥的发动机拆了个底朝天——这让马师傅心疼得直咧嘴，但不敢说。
“气缸铸造质量太差，材料杂质多。”费舍尔用生硬的英语说，“活塞环密封不好，气门间隙不对。还有这个化油器……简直是古董。”请求出错，状态码:0内容:请求出错，状态码:504内容:<!DOCTYPE html>
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<div class="mt-3">2026-06-30 17:16:20 UTC</div>
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