aerosandbox.dynamics.rigid_body.common_rigid_body

Classes

_DynamicsRigidBodyBaseClass

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

Module Contents

class aerosandbox.dynamics.rigid_body.common_rigid_body._DynamicsRigidBodyBaseClass(mass_props=None, **state_variables_and_indirect_control_variables)

Bases: aerosandbox.dynamics.point_mass.common_point_mass._DynamicsPointMassBaseClass, abc.ABC

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

Parameters:

mass_props (aerosandbox.MassProperties) –

abstract add_moment(Mx=0, My=0, Mz=0, axes='body')

Adds a moment (in whichever axis system you choose) to this Dynamics instance.

Parameters:

• Mx (Union[float, aerosandbox.numpy.ndarray]) – Moment about the x-axis in the axis system chosen. Assumed these moments are applied about the center of mass. [Nm]

• My (Union[float, aerosandbox.numpy.ndarray]) – Moment about the y-axis in the axis system chosen. Assumed these moments are applied about the center of mass. [Nm]

• Mz (Union[float, aerosandbox.numpy.ndarray]) – Moment about the z-axis in the axis system chosen. Assumed these moments are applied about the center of mass. [Nm]

• axes – The axis system that the specified moment is in. One of: * “geometry” * “body” * “wind” * “stability” * “earth”

Return type:

None

Returns: None (in-place)

property op_point

Returns an OperatingPoint object that represents the current state of the dynamics instance.

This OperatingPoint object is effectively a subset of the state variables, and is used to compute aerodynamic forces and moments.

property alpha

The angle of attack, in degrees.

property beta

The sideslip angle, in degrees.

property rotational_kinetic_energy

Computes the kinetic energy [J] from rotational motion.

KE = 0.5 * I * w^2

Returns:

Kinetic energy [J]

property kinetic_energy

Computes the kinetic energy [J] from translational and rotational motion.

KE = 0.5 * m * v^2 + 0.5 * I * w^2

Returns:

Kinetic energy [J]