...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>The Aeronautical Journal >Survivability of helicopter with individual blade primary control failure
【24h】

Survivability of helicopter with individual blade primary control failure

机译：具有单个叶片主控制故障的直升机的生存能力

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The effect of actuator damage on a helicopter rotor with an IBC based primary control system is studied. Such a system eliminates the swashplate and can be accomplished by trailing-edge flaps, active twist or full authority IBC, especially with smart material actuators. Damage to the collective, longitudinal and lateral cyclic are simulated for one blade, both individually and in combinations ranging from partial damage to complete failure. Numerical results are obtained using a dissimilar blade aeroelastic analysis based on finite elements in space and time for hover and forward speed conditions. It is found that the helicopter can be trimmed for all cases with all three controls having failed on the blade with actuator damage thereby showing that the IBC actuated rotor can survive an actuator failure and can be reconfigured by the pilot using the controls on the other blades. However, in case the collective fails and the longitudinal cyclic is present, there are problems in achieving trim at high damage levels at high forward speeds. Physical explanations of this phenomenon are given. The response (especially flap) for the damaged rotor blades can become high and 1/rev and 2/rev are transmitted by the reconfigured rotor to the hub. Results show that IBC based primary controls provide redundancy which can improve the survivability of a helicopter in case of actuator failure in one blade.
机译：利用基于IBC的主控制系统研究了执行器损坏对直升机旋翼的影响。这样的系统消除了旋转斜盘，并且可以通过后缘襟翼，主动扭转或完全授权的IBC来实现，尤其是使用智能材料执行器时。对一个叶片的整体，纵向和横向循环的损坏进行了模拟，无论是单独的还是组合的，范围从部分损坏到完全损坏。使用基于悬空和前进速度条件的时空有限元的叶片气动弹性分析，获得了数值结果。结果发现，在所有情况下都可以对直升机进行修剪，因为三个控制装置均在致动器损坏的叶片上失效，从而表明IBC致动旋翼可以在致动器失效后幸存，并且飞行员可以使用其他叶片上的控制器对其进行重新配置。但是，如果集体失效并且存在纵向循环，则在高前进速度下以高损伤水平实现修整会存在问题。对此现象进行了物理解释。对损坏的转子叶片的响应（尤其是襟翼）可能会变高，并且1 / rev和2 / rev通过重新配置的转子传递到轮毂。结果表明，基于IBC的主控制器提供了冗余，可以在一个叶片的执行器故障的情况下提高直升机的生存能力。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号