This part specifies the requirements for using UG software for aeroengine pipeline laying and two-dimensional drawing. This section is applicable to the piping laying of aerospace engines. The design of piping laying of non-aviation products can be used as a reference.
HB 7774.5-2011 Referenced Document
GJB 3816 General technical requirements for aircraft engine piping systems
HB 20054 Requirements of modeling and assembling for three-dimension standard parts in Unigraphics