文章通过对民用飞机在进近阶段的噪声级进行预测,为民用飞机进近阶段的噪声级的适航合格审定提供技术支持。使用控制变量法,导出飞机进近噪声水平的算法,同时利用现有机型的公开数据,对此算法进行验证,得到其有效性。基于Microsoft Visu...文章通过对民用飞机在进近阶段的噪声级进行预测,为民用飞机进近阶段的噪声级的适航合格审定提供技术支持。使用控制变量法,导出飞机进近噪声水平的算法,同时利用现有机型的公开数据,对此算法进行验证,得到其有效性。基于Microsoft Visual Studio 2010平台开发了一种算法程序来检测民用飞机的进近噪声水平,并将系统的检测结果与ESEA官网查询的数据进行比较,用以验证算法程序的有效性。结合新机型的参数数据,输入系统并得到其进近噪声级,将此数据与当前国际民航组织要求的最严格的进近噪声级相比较,判断新机型的噪声级是否满足适航要求,旨在降低民用飞机噪声合格审定成本,给飞机的设计和改进提供参考。展开更多
The part 23 airworthiness standards for small airplanes states minimal standards of the emergency condition for the occupant protection. Under this regulation, the airplane must be designed and certified about static ...The part 23 airworthiness standards for small airplanes states minimal standards of the emergency condition for the occupant protection. Under this regulation, the airplane must be designed and certified about static strength of the fuselage and seats, horizontal and vertical dynamic strength of seats. Human injuries in dynamic crash tests and the survivability in the turnover condition should be also evaluated. The most important part among injuries of human is a head and the head injury is evaluated by Head Injury Criterion （HIC）. KC-100, 4 seats airplane that is manufactured by KAI, was conducted seat dynamic tests. The HIC from tests was well within criteria limits 1,000 and the occupant compartment for head protection provided hazard-free spaces in the occupant＇s head strike envelope for the frontal-horizontal crash impacts. The airplane also was conducted a turnover static test and analysis to especially show living spaces of the head. The airframe could sustain living spaces for occupants in the turnover condition and occupants could escape and be protected. The results of tests and analysis corresponded to the criteria and proved the retention of survivable space in emergency landing condition.展开更多
文摘文章通过对民用飞机在进近阶段的噪声级进行预测,为民用飞机进近阶段的噪声级的适航合格审定提供技术支持。使用控制变量法,导出飞机进近噪声水平的算法,同时利用现有机型的公开数据,对此算法进行验证,得到其有效性。基于Microsoft Visual Studio 2010平台开发了一种算法程序来检测民用飞机的进近噪声水平,并将系统的检测结果与ESEA官网查询的数据进行比较,用以验证算法程序的有效性。结合新机型的参数数据,输入系统并得到其进近噪声级,将此数据与当前国际民航组织要求的最严格的进近噪声级相比较,判断新机型的噪声级是否满足适航要求,旨在降低民用飞机噪声合格审定成本,给飞机的设计和改进提供参考。
文摘The part 23 airworthiness standards for small airplanes states minimal standards of the emergency condition for the occupant protection. Under this regulation, the airplane must be designed and certified about static strength of the fuselage and seats, horizontal and vertical dynamic strength of seats. Human injuries in dynamic crash tests and the survivability in the turnover condition should be also evaluated. The most important part among injuries of human is a head and the head injury is evaluated by Head Injury Criterion （HIC）. KC-100, 4 seats airplane that is manufactured by KAI, was conducted seat dynamic tests. The HIC from tests was well within criteria limits 1,000 and the occupant compartment for head protection provided hazard-free spaces in the occupant＇s head strike envelope for the frontal-horizontal crash impacts. The airplane also was conducted a turnover static test and analysis to especially show living spaces of the head. The airframe could sustain living spaces for occupants in the turnover condition and occupants could escape and be protected. The results of tests and analysis corresponded to the criteria and proved the retention of survivable space in emergency landing condition.
