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Research on environmental envelope verification methodology for civil aircraft
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Journal Article
Research on environmental envelope verification methodology for civil aircraft
2026
Overview
This study focuses on the verification of environmental envelopes for civil aircraft. By analyzing the characteristics of the environmental envelope and interpreting the provisions of the airworthiness regulation CCAR 25.1527, the research confirms the compliance approach for environmental envelope verification, as well as the compliance activities for each discipline and system. While ensuring the completeness of the verification process, it identifies the need for localized environmental temperature validation in structural components and cabin compartments. Using accessory compartment data from a representative aircraft model as an example, and adopting a combined approach of test flights and computational analysis, an engineering-based temperature model is established. This model enables the correlation between temperature limits for structures and systems and the external atmospheric temperature.
Publisher
IOP Publishing
