aerosandbox.aerodynamics.aero_3D.linear_potential_flow

Attributes

immutable_dataclass
geometry_folder

Classes

LinearPotentialFlow

Helper class that provides a standard way to create an ABC using

Functions

tall(array)
wide(array)

Module Contents

aerosandbox.aerodynamics.aero_3D.linear_potential_flow.tall(array)

aerosandbox.aerodynamics.aero_3D.linear_potential_flow.wide(array)

aerosandbox.aerodynamics.aero_3D.linear_potential_flow.immutable_dataclass

class aerosandbox.aerodynamics.aero_3D.linear_potential_flow.LinearPotentialFlow(airplane, op_point, xyz_ref=None, run_symmetric_if_possible=False, verbose=False, wing_model='vortex_lattice_all_horseshoe', fuselage_model='none', wing_options=None, fuselage_options=None)

Bases: aerosandbox.ExplicitAnalysis

Helper class that provides a standard way to create an ABC using inheritance.

Parameters:

• airplane (aerosandbox.geometry.Airplane) –

• op_point (aerosandbox.performance.OperatingPoint) –

• xyz_ref (List[float]) –

• run_symmetric_if_possible (bool) –

• verbose (bool) –

• wing_model (Union[str, Dict[aerosandbox.geometry.Wing, str]]) –

• fuselage_model (Union[str, Dict[aerosandbox.geometry.Fuselage, str]]) –

• wing_options (Union[Dict[str, Any], Dict[aerosandbox.geometry.Wing, Dict[str, Any]]]) –

• fuselage_options (Union[Dict[str, Any], Dict[aerosandbox.geometry.Fuselage, Dict[str, Any]]]) –

airplane

op_point

xyz_ref = None

verbose = False

wing_model: Dict[aerosandbox.geometry.Wing, str] = 'vortex_lattice_all_horseshoe'

fuselage_model: Dict[aerosandbox.geometry.Fuselage, str] = 'none'

wing_options: Dict[aerosandbox.geometry.Wing, Dict[str, Any]] = None

fuselage_options: Dict[aerosandbox.geometry.Fuselage, Dict[str, Any]] = None

run_symmetric = False

__repr__()

class Elements

Bases: abc.ABC

Helper class that provides a standard way to create an ABC using inheritance.

parent_component: aerosandbox.AeroSandboxObject

start_index: int

end_index: int

__repr__()

abstract __len__()

class PanelElements

Bases: Elements, abc.ABC

Helper class that provides a standard way to create an ABC using inheritance.

front_left_vertices: aerosandbox.geometry.np.ndarray

back_left_vertices: aerosandbox.geometry.np.ndarray

back_right_vertices: aerosandbox.geometry.np.ndarray

front_right_vertices: aerosandbox.geometry.np.ndarray

__len__()

property crosses

property cross_norms

property areas: aerosandbox.geometry.np.ndarray

Return type:

aerosandbox.geometry.np.ndarray

property normal_directions

class WingHorseshoeVortexElements

Bases: PanelElements

Helper class that provides a standard way to create an ABC using inheritance.

trailing_vortex_direction: aerosandbox.geometry.np.ndarray

vortex_core_radius: float

property left_vortex_vertices

property right_vortex_vertices

property vortex_centers

property vortex_bound_legs

property collocation_points

get_induced_velocity_at_points(points, vortex_strengths, sum_across_elements=True)

Parameters:

• points (aerosandbox.geometry.np.ndarray) –

• vortex_strengths (aerosandbox.geometry.np.ndarray) –

• sum_across_elements (bool) –

Return type:

Tuple[aerosandbox.geometry.np.ndarray]

class WingLiftingLineElements

Bases: WingHorseshoeVortexElements

Helper class that provides a standard way to create an ABC using inheritance.

CL0: aerosandbox.geometry.np.ndarray

CLa: aerosandbox.geometry.np.ndarray

abstract property collocation_points

class FuselagePrescribedSourceLineElements

Bases: Elements

Helper class that provides a standard way to create an ABC using inheritance.

front_vertices: aerosandbox.geometry.np.ndarray

back_vertices: aerosandbox.geometry.np.ndarray

strength: aerosandbox.geometry.np.ndarray

__len__()

property discretization

A list of dictionaries, where each item in the list represents a single element.

Each item in the list is a namedtuple (effectively, a dictionary), and one of the following types:

• wing_vlm_element

• wing_lifting_line_element

• fuselage_prescribed_source_line

Type:

Returns

property N_elements

property AIC

abstract run()

Computes the aerodynamic forces.

Returns a dictionary with keys:

• ‘F_g’ : an [x, y, z] list of forces in geometry axes [N]

• ‘F_b’ : an [x, y, z] list of forces in body axes [N]

• ‘F_w’ : an [x, y, z] list of forces in wind axes [N]

• ‘M_g’ : an [x, y, z] list of moments about geometry axes [Nm]

• ‘M_b’ : an [x, y, z] list of moments about body axes [Nm]

• ‘M_w’ : an [x, y, z] list of moments about wind axes [Nm]

• ‘L’ : the lift force [N]. Definitionally, this is in wind axes.

• ‘Y’ : the side force [N]. This is in wind axes.

• ‘D’ : the drag force [N]. Definitionally, this is in wind axes.

• ‘l_b’, the rolling moment, in body axes [Nm]. Positive is roll-right.

• ‘m_b’, the pitching moment, in body axes [Nm]. Positive is pitch-up.

• ‘n_b’, the yawing moment, in body axes [Nm]. Positive is nose-right.

• ‘CL’, the lift coefficient [-]. Definitionally, this is in wind axes.

• ‘CY’, the sideforce coefficient [-]. This is in wind axes.

• ‘CD’, the drag coefficient [-]. Definitionally, this is in wind axes.

• ‘Cl’, the rolling coefficient [-], in body axes

• ‘Cm’, the pitching coefficient [-], in body axes

• ‘Cn’, the yawing coefficient [-], in body axes

Nondimensional values are nondimensionalized using reference values in the LinearPotentialFlow.airplane object.

Return type:

Dict[str, Any]

abstract get_induced_velocity_at_points(points)

Parameters:

points (aerosandbox.geometry.np.ndarray) –

Return type:

aerosandbox.geometry.np.ndarray

abstract get_velocity_at_points(points)

Parameters:

points (aerosandbox.geometry.np.ndarray) –

Return type:

aerosandbox.geometry.np.ndarray

abstract get_streamlines(seed_points=None, n_steps=300, length=None)

Parameters:

• seed_points (aerosandbox.geometry.np.ndarray) –

• n_steps (int) –

• length (float) –

abstract draw(c=None, cmap=None, colorbar_label=None, show=True, show_kwargs=None, draw_streamlines=True, recalculate_streamlines=False, backend='pyvista')

Parameters:

• c (aerosandbox.geometry.np.ndarray) –

• cmap (str) –

• colorbar_label (str) –

• show (bool) –

• show_kwargs (Dict) –

• backend (str) –

abstract draw_three_view()

aerosandbox.aerodynamics.aero_3D.linear_potential_flow.geometry_folder