SL 365-2007 水资源水量监测技术导则

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Product Code:SAE ARP5569
Title:Landing Gear Retraction / Extension Systems
Issuing Committee:A-5 Aerospace Landing Gear Systems Committee
Scope: This Aerospace Recommended Practice (ARP) will cover normal and emergency landing gear retraction/extension systems. This includes all equipment necessary for the control and sensing of the components used for raising and lowering the gear, up-locking and down-locking the gear, opening and closing the associated landing gear doors, and any latching of this equipment. The document will provide recommended practices for the use of conventional technologies and for those newer technologies now coming into use. It will include the regulatory and other safety requirements for these systems together with recommendations for; sequencing and timing, sensor selection, and failure monitoring of both normal and emergency operation and the support of maintenance and test needs.
Rationale: This Aerospace Recommended Practice (ARP) will cover normal and emergency landing gear retraction/extension systems. This includes all equipment necessary for the control and sensing of the components used for raising and lowering the gear, up-locking and down-locking the gear, opening and closing the associated landing gear doors, and any latching of this equipment. The document will provide recommended practices for the use of conventional technologies and for those newer technologies now coming into use. It will include the regulatory and other safety requirements for these systems together with recommendations for; sequencing and timing, sensor selection, and failure monitoring of both normal and emergency operation and the support of maintenance and test needs.【英文标准名称】:Acoustics-Determinationofsoundpowerlevelsofnoisesourcesusingsoundpressure-Engineeringmethodsforsmall,movablesourcesinreverberantfields-Part2:Methodsforspecialreverberationtestrooms(ISO3743-2:1994);GermanversionENISO374
【原文标准名称】:声学.利用声压测定噪声源混响场噪声源声功率级.在混响场中对小声源、可移动声源的工程测量方法.第2部分:专用混响实验室测量方法
【标准号】:ENISO3743-2-1996
【标准状态】:现行
【国别】:
【发布日期】:1996-12
【实施或试行日期】:
【发布单位】:欧洲标准学会(EN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:声源;声级;声试验;声学;测量仪器;直接测定法;传声器;测定;声音;声压;测量;混响室;混响时间;精密度;噪声测量;定义;数学计算;封闭式试验室;试验
【英文主题词】:Acousticmeasurement;Acoustictesting;Acoustictestingrooms;Acoustics;Closedtestrooms;Definition;Definitions;Determination;Directmethod;Mathematicalcalculations;Measurement;Measuringinstruments;Microphones;Noisemeasurements;Noisesources;Portable;Precision;Reverberationrooms;Reverberationtime;Sound;Soundlevel;Soundpressure;Soundsources;Testing
【摘要】:
【中国标准分类号】:Z32
【国际标准分类号】:17_140_01
【页数】:20P.;A4
【正文语种】:英语