aerosandbox.weights.mass_properties_of_shapes

Module Contents

Functions

mass_properties_from_radius_of_gyration(mass[, x_cg, ...])	Returns the mass properties of an object, given its radius of gyration.
mass_properties_of_ellipsoid(mass, radius_x, radius_y, ...)	Returns the mass properties of an ellipsoid centered on the origin.
mass_properties_of_sphere(mass, radius)	Returns the mass properties of a sphere centered on the origin.
mass_properties_of_rectangular_prism(mass, length_x, ...)	Returns the mass properties of a rectangular prism centered on the origin.
mass_properties_of_cube(mass, side_length)	Returns the mass properties of a cube centered on the origin.

aerosandbox.weights.mass_properties_of_shapes.mass_properties_from_radius_of_gyration(mass, x_cg=0, y_cg=0, z_cg=0, radius_of_gyration_x=0, radius_of_gyration_y=0, radius_of_gyration_z=0)

Returns the mass properties of an object, given its radius of gyration.

It’s assumed that the principle axes of the inertia tensor are aligned with the coordinate axes.

This is a shorthand convenience function for common usage of the MassProperties constructor. For more detailed use, use the MassProperties object directly.

Parameters:

• mass (float) – Mass [kg]

• x_cg (float) – x-position of the center of gravity

• y_cg (float) – y-position of the center of gravity

• z_cg (float) – z-position of the center of gravity

• radius_of_gyration_x (float) – Radius of gyration along the x-axis, about the center of gravity [m]

• radius_of_gyration_y (float) – Radius of gyration along the y-axis, about the center of gravity [m]

• radius_of_gyration_z (float) – Radius of gyration along the z-axis, about the center of gravity [m]

Return type:

aerosandbox.weights.mass_properties.MassProperties

Returns: MassProperties object.

aerosandbox.weights.mass_properties_of_shapes.mass_properties_of_ellipsoid(mass, radius_x, radius_y, radius_z)

Returns the mass properties of an ellipsoid centered on the origin.

Parameters:

• mass (float) – Mass [kg]

• radius_x (float) – Radius along the x-axis [m]

• radius_y (float) – Radius along the y-axis [m]

• radius_z (float) – Radius along the z-axis [m]

Return type:

aerosandbox.weights.mass_properties.MassProperties

Returns: MassProperties object.

aerosandbox.weights.mass_properties_of_shapes.mass_properties_of_sphere(mass, radius)

Returns the mass properties of a sphere centered on the origin.

Parameters:

• mass (float) – Mass [kg]

• radius (float) – Radius [m]

Return type:

aerosandbox.weights.mass_properties.MassProperties

Returns: MassProperties object.

aerosandbox.weights.mass_properties_of_shapes.mass_properties_of_rectangular_prism(mass, length_x, length_y, length_z)

Returns the mass properties of a rectangular prism centered on the origin.

Parameters:

• mass (float) – Mass [kg]

• length_x (float) – Side length along the x-axis [m]

• length_y (float) – Side length along the y-axis [m]

• length_z (float) – Side length along the z-axis [m]

Return type:

aerosandbox.weights.mass_properties.MassProperties

Returns: MassProperties object.

aerosandbox.weights.mass_properties_of_shapes.mass_properties_of_cube(mass, side_length)

Returns the mass properties of a cube centered on the origin.

Parameters:

• mass (float) – Mass [kg]

• side_length (float) – Side length of the cube [m]

Return type:

aerosandbox.weights.mass_properties.MassProperties

Returns: MassProperties object.