Enh/acceleration earth to rocket frame

CHANGELOG.md

@@ -31,14 +31,17 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
 Attention: The newest changes should be on top -->
 
 ### Added
-
+ - ENH: adds axial_acceleration attribute to the Flight class.- issue #529 [#834] (https://github.com/RocketPy-Team/RocketPy/pull/834)
 
 ### Changed
 
+
+
 - ENH: _MotorPrints inheritance - issue #460 [#828](https://github.com/RocketPy-Team/RocketPy/pull/828)
 
 - MNT: fix deprecations and warnings [#829](https://github.com/RocketPy-Team/RocketPy/pull/829)
 
+
 ### Fixed
 
 

README.md

@@ -18,6 +18,7 @@
 [![Instagram](https://img.shields.io/badge/Instagram-E4405F?style=flat&logo=instagram&logoColor=white)](https://www.instagram.com/rocketpyteam)
 [![LinkedIn](https://img.shields.io/badge/LinkedIn-0077B5?style=flat&logo=linkedin&logoColor=white)](https://www.linkedin.com/company/rocketpy)
 [![DOI](https://img.shields.io/badge/DOI-10.1061%2F%28ASCE%29AS.1943--5525.0001331-blue.svg)](http://dx.doi.org/10.1061/%28ASCE%29AS.1943-5525.0001331)
+[![Ask DeepWiki](https://deepwiki.com/badge.svg)](https://deepwiki.com/RocketPy-Team/RocketPy)
 
 # RocketPy
 

rocketpy/simulation/flight.py

@@ -2773,7 +2773,25 @@ def direction_cosine_matrixes(self):
         Kt = np.array([Matrix.transformation(row).transpose for row in stacked_arrays])
 
         return Kt
-
+
+    @cached_property
+    def acceleration_earth_to_body_frame(self):
+        """Acceleration in body frame obtained using inertial frame acceleration
+        at each time step."""
+        Kt = self.direction_cosine_matrixes
+
+        acceleration_earth = np.array(
+            [
+                self.ax.y_array,
+                self.ay.y_array,
+                self.az.y_array,
+            ]
+        ).transpose()
+        acceleration_body = np.squeeze(
+            np.matmul(Kt, acceleration_earth[:, :, np.newaxis])
+        )
+        return acceleration_body 
+
     @cached_property
     def stream_velocity_body_frame(self):
         """Stream velocity array at the center of dry mass in the body frame at
@@ -2790,7 +2808,7 @@ def stream_velocity_body_frame(self):
             np.matmul(Kt, stream_velocity[:, :, np.newaxis])
         )
         return stream_velocity_body
-
+    
     @funcify_method("Time (s)", "Angle of Attack (°)", "spline", "constant")
     def angle_of_attack(self):
         """Angle of attack of the rocket with respect to the freestream