• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文学位 >The effect of cockpit noise on the temporary threshold shift of Cessna 172SP flight instructors.
【24h】

The effect of cockpit noise on the temporary threshold shift of Cessna 172SP flight instructors.

机译：座舱噪声对塞斯纳172SP飞行教练员暂时阈值偏移的影响。

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 purpose of this thesis was to study the temporary threshold shift of general aviation flight instructors resulting from their working environment. Exposure to noise before a temporary threshold shift completely recovers can cause a permanent threshold shift with no possibility of recovery, resulting in permanent hearing loss. A result showing minimal to no temporary threshold shift would indicate that hearing personal protective equipment is working properly. This study used sound-level measurements, and audiometric testing, together with survey data to determine whether or not flight instructors were at risk for potential hearing impairment due to temporary threshold shift. Independent t-tests and descriptive statistics were used in analyzing the data. It was determined that there was a difference in temporary threshold shift based on the number of hours a flight instructor flies in a Cessna 172SP for only one frequency - 2000Hz in the left ear. All other frequencies tested in both ears showed no difference. Because there was a very low mean temporary threshold shift at 2000Hz in the left ear and no differences shown for all other frequencies in both ears, it was concluded that there was no need to improve or require additional hearing personal protective equipment, or to require decreased exposure times to aircraft noise.
机译：本文的目的是研究通用航空飞行教练因工作环境而造成的临时门槛变化。在暂时的阈值偏移完全恢复之前暴露于噪音下会导致永久的阈值偏移而无法恢复，从而导致永久性听力损失。结果显示最小或没有临时阈值变化将表明听力个人防护设备运行正常。这项研究使用了声级测量，听力测试以及调查数据来确定飞行教员是否由于暂时性的阈值变化而存在潜在的听力障碍风险。独立的t检验和描述性统计数据用于分析数据。根据飞行指导员在塞斯纳172SP中左耳只有一个频率-2000Hz的飞行小时数，确定临时阈值偏移存在差异。在两只耳朵中测试的所有其他频率均无差异。由于左耳在2000Hz处的平均临时阈值偏移非常低，并且在两只耳朵中所有其他频率上均未显示出差异，因此得出结论，无需改进或需要额外的听力个人防护装备，也无需降低飞机噪声的暴露时间。

著录项

  • 作者

    Bellini, Andrew Robert.;

  • 作者单位

    Embry-Riddle Aeronautical University.;

  • 授予单位 Embry-Riddle Aeronautical University.;
  • 学科 Engineering Aerospace.;Operations Research.
  • 学位 M.S.A.
  • 年度 2012
  • 页码 108 p.
  • 总页数 108
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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