mdolab / mdolab/OpenAeroStruct
Trim drag example doesn't do what it says
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- Dominant language
- Python
- Stars
- 281
- Forks
- 135
- PR merge metrics
- No merged PRs in 30d
Description
Description
The drag_polar.py example purports to have a trim drag option that can be toggled. However, it uses the OM BalanceComp to achieve this, but it doesn't have a Newton solver with which to drive the balance comp, so in effect it does nothing at all and the trim calc is wrong / not happening.
Steps to reproduce issue
Run drag_polar.py with trim drag turned on
Current behavior
CM not being balanced by tail rotation
Expected behavior
CM balanced to 0 by tail rotation
Contributor guide
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First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start with the drag_polar.py example and inspect how the trim drag option uses OM BalanceComp. Run the example with trim drag enabled, then verify that tail rotation drives CM to 0 and that the trim calculation is active.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- python
- Domain
- tooling
- Issue type
- Bug
- Difficulty
- 3/5
- Estimated time
- 1-2 days
- Activity status
- Stale
- Clarity
- Clearly specified
- Newbie friendliness
- 48/100