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Open Source Optimization of Dynamic Multidisciplinary Systems

Results 48 dymos issues
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### Description When a state is a vector/matrix/tensor quantity at each given point in time the resulting timeseries plot is nonsensical. Dymos should extract each element from the state (or...

bug

### Description Several components (AnalyticTimeseriesOutputComp, ExplicitShootingTimeseriesComp, PseudospectralTimeseriesOutputComp, and SolveIVPTimeseriesOutputComp) have the following logic: ```python if input_units is None or units is None: ... else: self._conversion_factors[name] = unit_conversion(input_units, units) ``` Later,...

bug

### Task Description This is a follow up to the stack exchange post here: https://stackoverflow.com/questions/75129083/can-i-add-or-remove-design-variables-from-a-problem-after-setup-call The model (repo [here](https://github.com/caksland/FlowSystemDesign.git)) has an extremely long setup time that is strongly dependent on...

### Proposed feature. - Timeseries plots should include an indication of the bounds of states, controls, and parameters. - Timeseries plots should include an indication of fixed initial or final...

visualization

### Task Description The documentation [here]( https://openmdao.github.io/dymos/getting_started/collocation.html#lgl-vs-lgr-collocation) needs to mention the nuances about control extrapolation when using radau pseudospectral method, since it extrapolates the control to the terminal value in...

docs

### Summary - Added "hatched out" areas to plots of design variables (states, controls, parameters) that indicate regions beyond the lower or upper bounds of the variables. - Added circle_cross...

### Proposed feature. Dangling inputs in the ODE are nominally connected to an automatic IndepVarComp at the top level of the model. This breaks the paradigm that the user should...

enhancement

### Proposed feature. The `solve_segments` implementation utilizes a Newton solver at the phase level to resolve the collocation defects as solver residuals. In dymos 1.6.1-dev, this Newton solver is wrapped...

### Proposed feature. The ascii constraint summary and linkage report that are sent to standard output are no longer necessary. The former is replaced by the OpenMDAO opt_report.html and the...

### Proposed feature. Sometimes users desire to satisfy boundary constraints without the need of an optimizer. Using the `solve_segments` option to have a nonlinear solver converge the dynamics should obviate...