This practice is used as a basis for determining the minimum motor octane requirement of naturally aspirated aircraft engines by use of PRFs.

Results from standardized octane ratings will play an important role in defining the actual octane requirement of a given aircraft engine, which can be applied in an effort to determine a fleet requirement.

1. Scope

1.1 This practice covers ground based octane rating procedures for naturally aspirated spark ignition aircraft engines using primary reference fuels.

1.2 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 and health practices and determine the applicability of regulatory limitations prior to use.

2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

ASTM Standards

Keywords

aircraft engine; naturally aspirated ; octane rating; octane requirement; spark ignition aircraft engine; Octane number/rating; Referee methods; Ground-based octane rating; Knock characteristics; Motor octane number (MON); Aviation fuels;

ICS Code

ICS Number Code 75.160.20 (Liquid fuels)

Citing ASTM Standards

[Back to Top]