Product Code:SAE ARP4418
Title:Procedure for Sampling and Measurement of Engine Generated Contaminants in Bleed Air Supplies From Aircraft Engines Under Normal Operating Conditions
Issuing Committee:E-31 Aircraft Exhaust Emissions Measurement Committee
Scope: The following individual engine compressor generated contaminants are addressed by this SAE Aerospace Recommended Practice (ARP): a. carbon dioxide; b. hydrogen fluoride; c. organic material; d. carbon monoxide; e. acrolein; f. respirable particles; g. oxides of nitrogen; and h. formaldehyde. For reference purposes, information is also given on the current maximum allowable engine bleed air concentration limits for each of these contaminants, as stated in the latest issue of AIR4766. Recommended techniques for the sampling and sample transfer are given, together with the specific analytical methodology and acceptable alternate referenced analytical methodology for each of the above contaminants. Recommendations are also made for an engine test format and for the allowance of ambient air quality on the engine measured contaminant concentration levels. The previous list of contaminants are considered appropriate for the certification and passenger safety requirements of both civil and military aircraft.【英文标准名称】:Thermoplasticspipes-Determinationofresistancetoexternalblows-Round-the-clockmethod
【原文标准名称】:热塑性塑料管耐外冲击性的测定时针旋转法
【标准号】:ISO3127-1994
【标准状态】:现行
【国别】:国际
【发布日期】:1994-12
【实施或试行日期】:
【发布单位】:国际标准化组织(IX-ISO)
【起草单位】:ISO/TC138
【标准类型】:()
【标准水平】:()
【中文主题词】:热塑性聚合物;抗冲击(强度);塑料管;管道;冲击试验;试验设备;试验
【英文主题词】:Impactresistance;Impacttests;Pipelines;Plasticpipes;Testequipment;Testing;Thermoplasticpolymers
【摘要】:Cancelsandreplacesthefirstedition(1980).Specifiesamethodforthedeterminationoftheresistancetoexternalblowsofthermoplasticspipesofcircularcross-section(round-the-clockmethod).Thismethodisapplicabletoisolatedbatchesofpipetestedat0鳦.
【中国标准分类号】:G33
【国际标准分类号】:23_040_20
【页数】:11P.;A4
【正文语种】:英语