frispy.trajectory
The Trajectory is the interface to the differential equation solver
for the disc trajectory.
Module Contents
Classes
Class for computing the disc flight trajectory. Takes initial values |
Functions
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Compute the (partial) rotation matrix that transforms from the |
- frispy.trajectory.rotation_matrix(phi: float, theta: float) numpy.ndarray[source]
Compute the (partial) rotation matrix that transforms from the lab frame to the disc frame. Note that because of azimuthal symmetry, the azimuthal angle (gamma) is not used.
- class frispy.trajectory.Trajectory[source]
Class for computing the disc flight trajectory. Takes initial values and interfaces with an ODE solver.
Units are meters [m] for length, kilograms [kg] for mass, seconds [s] for time, and radians [rad] for angles.
- Parameters
x (float) – horizontal position; default is 0 m
y (float) – horizontal position; default is 0 m
z (float) – vertical position; default is 1 m
vx (float) – x-velocity; default is 10 m/s
vy (float) – y-velocity; default is 0 m/s
vz (float) – z-velocity; default is 0 m/s
phi (float) – 1st Euler angle (pitch); default is 0 rad
theta (float) – 2nd Euler angle (roll); default is 0 rad
gamma (float) – 3rd Euler angle (spin); default is 0 rad
phidot (float) – phi angular velocity; default is 0 rad/s
thetadot (float) – theta angular velocity; default is 0 rad/s
gammadot (float) – gamma angular velocity; default is 50 rad/s
- x :float = 0
- y :float = 0
- z :float = 1
- vx :float = 10
- vy :float = 0
- vz :float = 0
- phi :float = 0
- theta :float = 0
- gamma :float = 0
- phidot :float = 0
- thetadot :float = 0
- gammadot :float = 50
- property velocity(self) numpy.ndarray
- property angular_velocity(self) numpy.ndarray