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【英文标准名称】:Safetyrequirementsforelectricalequipmentformeasurement,controlandlaboratoryuse-Part031:safetyrequirementsforhand-heldprobeassembliesforelectricalmeasurementandtest.
【原文标准名称】:测量、控制和试验室用电气设备的安全要求.第031部分:电气测量和试验用手持式探针组件的安全要求
【标准号】:NFC42-725-2002
【标准状态】:现行
【国别】:法国
【发布日期】:2002-05-01
【实施或试行日期】:2002-05-20
【发布单位】:法国标准化协会(AFNOR)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:普通控制系统;控制装置;测量线;试验设备;电气工程;定义;电气器具;电学测量仪表;安全要求;互连管线;测量仪器;实验室器皿;安全
【英文主题词】:
【摘要】:
【中国标准分类号】:N20
【国际标准分类号】:19_080
【页数】:63P;A4
【正文语种】:其他


Product Code:SAE AIR1168/7
Title:Aerospace Pressurization System Design
Issuing Committee:Ac-9 Aircraft Environmental Systems Committee
Scope:The requirements for cabin pressure for all types of aircraft have been established for the Armed Services in military specifications, by the Federal Aviation Authority and by the SAE in recommendations. These requirements limit the cabin altitude to 8000 ft in transport and long range military aircraft. In the fighter aircraft, when the pilot uses oxygen and the mission duration is relatively brief, cabin altitudes up to 25,000 ft are allowed. Supersonic transports, which operate at high speed and high altitude, have short flight durations and high rates of descent. To avoid an uncomfortable rate of change of cabin pressure when descending from high altitudes, a maximum cabin altitude of 6000 ft is recommended. The pressurization system design considerations presented in this AIR deal with human physiological requirements, characteristics of pressurization air sources, methods of controlling cabin pressure, cabin leakage control, leakage calculation methods, and methods of emergency cabin pressure release.