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南京这一高校,创世界纪录!

  • 2026-02-26 06:00:35
南京这一高校,创世界纪录!
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南京航空航天大学

由胡海岩院士、黄锐教授指导的团队

在飞翼布局飞行器的刚-弹耦合颤振抑制技术

研究方面取得突破

飞行试验表明

该团队成功实现结构强度极限内的

刚-弹耦合颤振屏障突破

将安全飞行速度提高62.5%

创造了该领域的世界记录

图片来源:南京航空航天大学

想象一下,一架像“飞翼”一样的先进飞行器,正在蓝天自由翱翔,却因突如其来的“振动”而在空中解体。这就是新一代飞翼布局飞行器面临的核心难题——刚-弹耦合颤振。近日,由胡海岩院士、黄锐教授带领的科研团队成功打破了这一“飞行魔咒”!

刚-弹耦合颤振抑制技术飞行试验成功后的团队合影

飞翼布局飞行器是新一代战略轰炸机、高空无人侦察机首选的气动布局,但它有个天生的“软肋”——机体俯仰转动惯量小、机翼弯曲频率低,导致其刚体短周期俯仰模态与机翼低阶弹性模态在气流作用下相互耦合,诱发刚-弹耦合颤振。以往为了避免发生颤振,只好降低飞行器速度和飞行任务难度。因此,突破“颤振屏障”成为世界航空科技的“硬骨头”。

团队在飞翼布局飞行器的刚-弹耦合颤振抑制技术研究方面取得突破性进展,飞行试验结果惊艳全场:成功实现结构强度极限内的刚-弹耦合颤振屏障突破,将安全飞行速度提高 62.5%,创造了该领域的世界记录。

相关研究成果以“Breaking Through Flutter Barrier of Rigid-Elastic Coupling Aircraft” 为 题 发 表 于 力 学 领 域 顶 刊 《 ASME Applied Mechanics Reviews》(影响因子:16.1)。论文第一作者为该校航空学院博士生邹奇彤,通讯作者为南京航空航天大学黄锐教授和北京理工大学胡海岩院士,航空航天结构力学及控制全国重点实验室为论文第一完成单位。

该研究工作获得国家自然科学基金委员会优秀青年科学基金、国家自然科学基金青年基金 A 类项目资助,是近20年来我国动力学与控制领域学者在该期刊发表的唯一论文。

可能有人会问,这一技术到底厉害在哪?简单说,它就像给飞行器装了个“智能防颤系统”,而且还特别“省事儿”——不用改动飞行器原本的结构设计,不用额外增加重量和刚度,全靠飞行器自身的传感系统“站岗放哨”。传感器实时监测飞行数据,实时调整气动力的分布,相当于给飞行器增加了“隐形的支撑力和缓冲力”,从根源上抑制住颤振的发生。

十年磨一剑,团队用整整十个春秋,在刚-弹耦合颤振抑制技术的攻坚之路上步履不停。

团队开展试验工作

面对一次次失败,团队师生没有任何抱怨退缩。飞机不慎摔进水塘,学生们二话不说挽起裤脚,蹚着冰冷的泥水就去打捞;设备出了故障,大家连夜排查、反复调试,常常累得趴在试验台上就睡着了。这份吃苦耐劳、团结一心的韧劲,成了他们熬过“十年冷板凳”的精神支撑。

厚积薄发之下,团队终于迎来了梦寐以求的突破,创下两项震撼行业的“开创性成就”:

一是理论层面的重大革新。团队跳出传统思维,提出仅含四个自由度的刚-弹耦合动力学模型,清晰探明了飞行力学中的短周期模态、沉浮模态与结构弯曲模态、扭转模态之间的耦合机理,更精准揭示了敏感参数对颤振特性的影响规律,彻底摸清了刚-弹耦合颤振的“脾气”。面对国内缺乏专用建模软件、国外技术封锁禁售的“卡脖子” 困境,他们另辟蹊径,决定走自主研制之路,创新融合飞行力学与气动弹性的建模方法,成功研发出我国第一套拥有完全自主知识产权的刚-弹耦合飞行力学建模软件,打破了国外技术垄断。

二是技术层面的关键突破。团队攻克了超临界飞行条件下的一系列核心技术难题,自主研制出展弦比超过10的柔性飞翼布局无人机。随后,他们顶着极高风险开展飞行试验,最终成功将刚-弹耦合颤振临界速度提升62.5%,在世界上首次突破结构强度极限内的刚-弹耦合颤振屏障,为我国航空科技发展写下了浓墨重彩的一笔。

速度提高62.5%

突破世界难题

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  1. CONNECT:[ UseTime:0.000487s ] mysql:host=127.0.0.1;port=3306;dbname=b460;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.000769s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000334s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000277s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000513s ]
  6. SELECT * FROM `set` [ RunTime:0.000209s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000530s ]
  8. SELECT * FROM `article` WHERE `id` = 461410 LIMIT 1 [ RunTime:0.000426s ]
  9. UPDATE `article` SET `lasttime` = 1772778938 WHERE `id` = 461410 [ RunTime:0.004205s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 65 LIMIT 1 [ RunTime:0.000257s ]
  11. SELECT * FROM `article` WHERE `id` < 461410 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.000461s ]
  12. SELECT * FROM `article` WHERE `id` > 461410 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.002162s ]
  13. SELECT * FROM `article` WHERE `id` < 461410 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.006258s ]
  14. SELECT * FROM `article` WHERE `id` < 461410 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.000742s ]
  15. SELECT * FROM `article` WHERE `id` < 461410 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.000865s ]
0.088338s