NPLOT (Goddard, 1982)

NPLOT was a product of research into the visualization of finite element models, which had been ongoing at Goddard since the introduction of NASTRAN. A fast, hidden line algorithm was developed in 1982 and became the basis for the NPLOT plotting program for NASTRAN, pub­licly released initially in 1985 and in improved versions into the 1990s.[987]

2) Integrated Modeling of Optical Systems (IMOS) (Goddard and JPL,

1990s)

A combined multidisciplinary code, IMOS was developed during the 1990s by Goddard and JPL: "Integrated Modeling of Optical Systems (IMOS) is a finite element-based code combining structural, thermal, and optical ray-tracing capabilities in a single environment for analy­sis of space-based optical systems.”[988] IMOS represents a recent step in the continuing evolution of Structural-Thermal-Optical analysis capa­bility, which has been an important activity at the Space Flight Centers since the early 1970s.