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AS6502 - Aircraft Propulsion System Performance Nomenclature

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Document Number: AS6502
Project Initiation: 03-26-2014
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Aircraft Propulsion System Performance Nomenclature
1.1 This SAE Aerospace Standard (AS) provides performance station designation and nomenclature systems for aircraft propulsion systems and their derivatives. 1.2 The parameter naming conventions presented herein are for use in all communications concerning propulsion system performance such as computer programs, data reduction, design activities, and published documents. They are intended to facilitate calculations by the program user without unduly restricting the method of calculation used by the program supplier. 1.3 The list of symbols presented herein will be used for identification of input and output parameters. These symbols are not required to be used as internal parameter names within the engine subprogram
Aircraft propulsion technology continues to evolve and advance to meet changing requirements and challenges for improved performance and capabilities. This document addresses an industry need to characterize classical propulsion system performance parameter names, and describes the logical framework by which new names can be constructed. Nomenclature definitions issued by other industry organizations were reviewed and considered as well as the application of this standard to alternate engine cycles. The contents of this document were, originally, a subset of AS755E. Due to the growing complexity of station numbering schemes described in AS755, and a desire to expand the nomenclature section to include a fuller representation of “classical” (legacy use) names, a decision was made to separate its “station numbering” and “nomenclature” content into two separate documents. This document, then, was created using the “nomenclature” half of AS755E. Both documents will continue to be improved and expanded as industry needs dictate.
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