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Adding scale factor to generate_vsp_surfaces #419

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Dec 21, 2023
Merged

Adding scale factor to generate_vsp_surfaces #419

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9 changes: 7 additions & 2 deletions openaerostruct/geometry/utils.py
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Original file line number Diff line number Diff line change
Expand Up @@ -706,7 +706,7 @@ def generate_mesh(input_dict):
return mesh


def generate_vsp_surfaces(vsp_file, symmetry=False, include=None):
def generate_vsp_surfaces(vsp_file, symmetry=False, include=None, scale=1.0):
"""
Generate a series of VLM surfaces based on geometries in an OpenVSP model.

Expand All @@ -721,6 +721,10 @@ def generate_vsp_surfaces(vsp_file, symmetry=False, include=None):
include : list[str]
List of body names defined in OpenVSP model that should be included in VLM mesh output.
Defaults to all bodies found in model.
scale: float
A global scale factor from the OpenVSP geometry to incoming VLM mesh
geometry. For example, if the OpenVSP model is in inches, and the VLM
in meters, scale=0.0254. Defaults to 1.0.

Returns
-------
Expand Down Expand Up @@ -832,6 +836,7 @@ def generate_vsp_surfaces(vsp_file, symmetry=False, include=None):
mesh[:, :, 0] = np.flipud(x.T)
mesh[:, :, 1] = np.flipud(y.T)
mesh[:, :, 2] = np.flipud(z.T)
mesh *= scale

# Check if the surface has already been added (i.e. symmetry == False)
if surf_name not in surfaces:
Expand All @@ -856,7 +861,7 @@ def generate_vsp_surfaces(vsp_file, symmetry=False, include=None):

# If a half-model was requested, go through and flag each surface as symmetrical
# if a left and right surface was found.
# NOTE: We don't necesarilly want to mark every surface as symmetrical,
# NOTE: We don't necessarily want to mark every surface as symmetrical,
# even if a half-model is requested, since some surfaces, like vertical tails,
# might lie perfectly on the symmetry plane.
if symmetry:
Expand Down
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