BUG: Fixes StochasticNoseCone powerseries issue #838 (#839)

* BUG: fix StochasticNoseCone powerseries issue by adding power parameter to constructor
* DOC: Add bug fix #838 to changelog
* BUG: pass power parameter into StochasticModel to allow variation

Author: cazzopardi

CHANGELOG.md

@@ -306,6 +306,7 @@ You can install this version by running `pip install rocketpy==1.3.0`
 
 ### Fixed
 
+- BUG: Fixes StochasticNoseCone powerseries issue #838 [#839](https://github.com/RocketPy-Team/RocketPy/pull/839)
 - MNT: Alter PYPI classifier naming. [#615](https://github.com/RocketPy-Team/RocketPy/pull/615)
 - DOC: Solve Dependencies Conflicts and pyproject build [#613](https://github.com/RocketPy-Team/RocketPy/pull/613)
 - BUG: Fixes nose cone bluffness issue #610 [#611](https://github.com/RocketPy-Team/RocketPy/pull/611)

rocketpy/stochastic/stochastic_aero_surfaces.py

@@ -54,6 +54,7 @@ def __init__(
         base_radius=None,
         bluffness=None,
         rocket_radius=None,
+        power=None,
     ):
         """Initializes the Stochastic Nose Cone class.
 
@@ -84,6 +85,7 @@ def __init__(
             base_radius=base_radius,
             bluffness=bluffness,
             rocket_radius=rocket_radius,
+            power=power,
             name=None,
         )