OpenMDAO / OpenMDAO/Aviary

Engine without nacelle

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Dominant language
Python
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6d 14h
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Description

Desired capability or behavior.

Copied from source code: do all engines support nacelles? If not, is this deliberate, or just an artifact of the implementation?

See NacelleCharacteristicLength of subsystems/geometry/flops_based/characteristic_lengths.py.

This case is really rare if any. If use GASP, one can set KNAC=0, but Aviary does not use KNAC. If the engine is buried inside the fuselage, GASP can do that case also (Set CKN=0).

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

No response

Associated Bug Report

No response

Contributor guide

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First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start in subsystems/geometry/flops_based/characteristic_lengths.py at NacelleCharacteristicLength and trace how engine nacelles are handled. Compare the current behavior with the GASP KNAC=0 and CKN=0 cases described in the issue. Done means the behavior for engines without nacelles is clearly defined and supported or explicitly ruled out.

Written by the indexing model from the issue text.

Assessment

Tech stack
python
Domain
backend
Issue type
Feature
Difficulty
4/5
Estimated time
3-5 days
Activity status
Quiet
Clarity
Mostly clear
Newbie friendliness
48/100

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