Design Method for Environmental Envelope of Civil Aircraft

The aircraft environmental envelope, also known as the temperature-altitude envelope, is an important design basis and verification benchmark for aircraft structure and system design, as well as the environmental tolerance of airborne equipments. It is also one of the important operational restrictions required by airworthiness regulations for civil aircraft. This article proposes guiding principles and methods for the design of typical aircraft environmental envelope by constructing a model that matches the atmospheric environment model with the aircraft design constraints, providing reference for the design of environmental envelope for civil aircraft models.