OpenMDAO / Aviary

NASA's aircraft analysis, design, and optimization tool
https://openmdao.github.io/Aviary/
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Misleading Fuselage Average Diameter #420

Open jkirk5 opened 5 days ago

jkirk5 commented 5 days ago

Desired capability or behavior.

The fuselage average diameter variable is used by both FLOPS, GASP, and external codes (such as VSP). However, FLOPS uniquely does not define average diameter in a literal sense, and instead uses a non-physical diameter calculated using maximum fuselage height and width. This causes confusion and has lead to incorrect results for the TTBW model.

FLOPS-based analysis should probably use a new variable, Aircraft.Fuselage.REFERENCE_DIAMETER, with appropriate variable description, to avoid future confusion.

Also, Aircraft.Fuselage.AVG_DIAMETER should be expanded to Aircraft.Fuselage.AVERAGE_DIAMETER

Is your feature request related to a problem? Please describe.

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Associated Bug Report

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