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【英文标准名称】:TestMethodforTotalIroninIronOresbytheDichromate-FreeTitrimetricMethod
【原文标准名称】:用无重铬酸盐滴定分析法对铁矿石中总铁含量的试验方法
【标准号】:ASTME1028-2000
【标准状态】:现行
【国别】:美国
【发布日期】:1998
【实施或试行日期】:
【发布单位】:美国材料与试验协会(ASTM)
【起草单位】:ASTM
【标准类型】:()
【标准水平】:()
【中文主题词】:金属;铁矿石;试验;铁;金属矿物;滴定法
【英文主题词】:ores;iron;testing;metals;titrimetry;ironores
【摘要】:
【中国标准分类号】:D31
【国际标准分类号】:73_060_10
【页数】:
【正文语种】:英语


Product Code:SAE ARP292
Title:Environmental Control Systems for Helicopters
Issuing Committee:Ac-9 Aircraft Environmental Systems Committee
Scope:This ARP discusses design philosophy, system and equipment requirements, environmental conditions, and design considerations for helicopter environmental control systems (ECS). The helicopter ECS comprises that arrangement of equipment, controls, and indicators which supply and distribute dehumidified conditioned air for ventilation, cooling and heating of th eoccupied compartments, and cooling of the avionics. The principal features of the system are:a. A controlled fresh air supplyb. A means for cooling (air or vapor cycle units and heat exchangersc. A means for removing excess moisture from the air supplyd. A means for heatinge. A temperature control systemf. A conditioned air distribution systemThe ARP is applicable to both civil and military helicopters when an ECS is specified; however, certain requirements peculiar to military applications, such as nuclear, biological and chemical (NBC) protection, are not covered. The integration of NBC protection into aircraft ECS is discussed in AIR4362.o aircraft ECS is discussed in AIR4362.