ASTM D7826-21 评定新型航空汽油和新型航空汽油添加剂的标准指南

ASTM D7826-21 评定新型航空汽油和新型航空汽油添加剂标准指南

标准:ASTM D7826-21
发布单位或类别:美国-美国材料与试验协会(US-ASTM)
发布日期:2021-12-01
实施日期
废止日期
CCS分类
ICS分类

75.160.20   燃料 – 液体燃料

适用范围/摘要

1.1 本指南提供了开发新航空汽油或新航空汽油添加剂的研究报告中使用的数据的程序。 1.2 该数据旨在由ASTM小组委员会用于确定燃料在机队范围内或有限容量下用作航空燃料的适用性,并确定相关标准规范中的拟议特性和标准提供了必要的控制,以确保这种燃料在大批量生产期间保持这种适用性。 1.3 这些研究报告旨在支持这些产品的新规范或规范修订的开发和发布。制定ASTM航空汽油国际标准规范的指南见航空燃料操作程序小组委员会J,附件A6,“新航空燃料规范的制定和验收指南”- 点火往复式发动机。” 1.4 本指南中详细介绍的程序、测试、材料选择、发动机和飞机基于行业专业知识,以提供适当的数据供审查。由于航空硬件的多样性和燃料/添加剂配方的潜在变化,并非每个方面都可以涵盖,可能需要进一步的工作。因此,ASTM工作组、J小组委员会或D02委员会在审查候选燃料或添加剂的具体成分、性能或其他特性后,可能会要求提供本指南中所述以外的其他数据。 1.5 虽然这超出了本指南的范围,但建议调查新型航空汽油或新型航空汽油添加剂的未来健康和环境影响以及环境机构的要求。 1.6 以国际单位制表示的数值应视为标准值。 1. 6.1 例外情况- 一些行业标准方法使用英制单位作为其主要系统(渗透率; 表A2.2 ). 1.7 本标准并非旨在解决与其使用相关的所有安全问题(如有)。本标准的用户有责任在使用前制定适当的安全、健康和环境实践,并确定监管限制的适用性。 1.8 本国际标准是根据世界贸易组织技术性贸易壁垒(TBT)委员会发布的《关于制定国际标准、指南和建议的原则的决定》中确立的国际公认标准化原则制定的。 ====意义和用途====== 5.1 本指南适用于新型航空汽油或添加剂的开发人员或赞助商,以描述支持ASTM成员制定这些新产品规范所需的数据要求。 根据本指南生成的数据的最终目标是在拟议规范标准的性能约束和成分界限内,提供对新燃料或添加剂性能的理解。 5.2 本指南不是批准流程。它旨在描述生成数据以支持规范开发所需的测试和分析需求。本指南不涉及ASTM国际标准的批准流程。 5.3 本指南将通过描述继续制定ASTM国际航空汽油规范或航空汽油添加剂规范修订所需的测试和分析要求,减少新航空汽油或添加剂开发商或赞助商的不确定性和风险。本指南中的某些章节没有指定所需数据点的确切数量。 例如 6.2.4.3 需要测量从冰点到室温的粘度; 6.2.4.4 , 6.2.4.5 和 6.3.2.3 要求在工作温度范围内进行测量; 6.3.2.4 和 6.3.2.5 需要测量温度。在这些情况下,新航空汽油或添加剂的开发商或赞助商应尝试生成接近所示上下限的数据。如果未指定边界(例如,生成数据与温度),则应生成最宽实际测试极限下的数据。在所有情况下,至少需要三个数据点(例如,上、中、下),而首选五个或更多数据点。 5.4 本指南并非旨在规定测试和分析要求的全面清单,以实现ASTM对规范或规范修订的国际批准。最终要求将取决于候选燃料的具体配方和性能,并由负责监督规范制定的ASTM国际工作组和委员会确定。 5.5 本指南旨在描述用于确定拟议燃料或添加剂是否适用于现有或未来飞机和发动机,但不一定适用于所有现有或未来飞机和发动机的数据。 5.6 本指南不描述其他审批机构(如国家航空监管机构)或其他组织或行业协会的数据要求。然而,在程序执行过程中生成的数据可能对其他目的或其他组织有用。 5.7 超过200 000活塞发动机飞机依赖规格 D910 含铅航空汽油(avgas),用于安全操作。规范替代品的研究和开发有所增加 D910 汽油是环境和经济问题的结果。

1.1 This guide provides procedures to develop data for use in research reports for new aviation gasolines or new aviation gasoline additives. 1.2 This data is intended to be used by the ASTM subcommittee to make a determination of the suitability of the fuel for use as an aviation fuel in either a fleet-wide or limited capacity, and to make a determination that the proposed properties and criteria in the associated standard specification provide the necessary controls to ensure this fuel maintains this suitability during high-volume production. 1.3 These research reports are intended to support the development and issuance of new specifications or specification revisions for these products. Guidance to develop ASTM International standard specifications for aviation gasoline is provided in Subcommittee J on Aviation Fuels Operating Procedures, Annex A6, “Guidelines for the Development and Acceptance of a New Aviation Fuel Specification for Spark-Ignition Reciprocating Engines.” 1.4 The procedures, tests, selection of materials, engines, and aircraft detailed in this guide are based on industry expertise to give appropriate data for review. Because of the diversity of aviation hardware and potential variation in fuel/additive formulations, not every aspect may be encompassed and further work may be required. Therefore, additional data beyond that described in this guide may be requested by the ASTM task force, Subcommittee J, or Committee D02 upon review of the specific composition, performance, or other characteristics of the candidate fuel or additive. 1.5 While it is beyond the scope of this guide, investigation of the future health and environmental impacts of the new aviation gasoline or new aviation gasoline additive and the requirements of environmental agencies is recommended. 1.6 The values stated in SI units are to be regarded as standard. 1.6.1 Exception— Some industry standard methodologies utilize imperial units as their primary system (permeability; Table A2.2 ). 1.7 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.8 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee. ====== Significance And Use ====== 5.1 This guide is intended for the developers or sponsors of new aviation gasolines or additives to describe the data requirements necessary to support the development of specifications for these new products by ASTM members. The ultimate goal of the data generated in accordance with this guide is to provide an understanding of the performance of the new fuel or additive within the property constraints and compositional bounds of the proposed specification criteria. 5.2 This guide is not an approval process. It is intended to describe test and analysis requirements necessary to generate data to support specification development. This guide does not address the approval process for ASTM International standards. 5.3 This guide will reduce the uncertainty and risk to developers or sponsors of new aviation gasolines or additives by describing the test and analysis requirements necessary to proceed with the development of an ASTM International specification for aviation gasoline or specification revision for an aviation gasoline additive. There are certain sections within this guide that do not specify an exact number of data points required. For example, 6.2.4.3 requires viscosity to be measured from freezing point to room temperature; 6.2.4.4 , 6.2.4.5 , and 6.3.2.3 require measurements over the operating temperature range; 6.3.2.4 and 6.3.2.5 require measurements versus temperature. In these cases, the developers or sponsors of new aviation gasolines or additives should attempt to generate data close to the upper and lower boundaries indicated. If no boundary is specified (for example, generate data versus temperature), then data at the widest practical test limits should be generated. A minimum of three data points is required in all cases (for example, upper, middle, lower), while five or more data points are preferred. 5.4 This guide does not purport to specify an all-inclusive listing of test and analysis requirements to achieve ASTM International approval of a specification or specification revision. The final requirements will be dependent upon the specific formulation and performance of the candidate fuel and be determined by the ASTM International task forces and committees charged with overseeing the specification development. 5.5 This guide is intended to describe data to be used to make a determination of the suitability of the proposed fuel or additive for use in existing or future aircraft and engines, but not necessarily for use in all existing or future aircraft and engines. 5.6 This guide does not describe data requirements of other approving authorities, such as national aviation regulatory authorities, or of other organizations or industry associations. However, the data generated in the conduct of the procedure may be useful for other purposes or other organizations. 5.7 Over 200 000 piston-engine aircraft rely on Specification D910 lead-containing aviation gasoline (avgas) for safe operation. There has been an increase in the research and development of alternatives to Specification D910 gasolines as a result of environmental and economic concerns.

研制信息

起草单位

起 草 人

归口单位
D02.J0.02

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