Guidance model for fixed-wing UAVs

A `fixedwing`

object represents a reduced-order guidance model for
an unmanned aerial vehicle (UAV). The model approximates the behavior of a closed-loop system
consisting of an autopilot controller and a fixed-wing kinematic model for 3-D
motion.

For multirotor UAVs, see `multirotor`

.

`model = fixedwing`

creates a fixed-wing motion model with
`double`

precision values for inputs, outputs, and configuration parameters
of the guidance model.

`model = fixedwing(DataType)`

specifies the data type precision
(`DataType`

property) for the inputs, outputs, and configurations
parameters of the guidance model.

`control` | Control commands for UAV |

`derivative` | Time derivative of UAV states |

`environment` | Environmental inputs for UAV |

`state` | UAV state vector |

[1] Randal W. Beard and Timothy W.
McLain. "Chapter 9." *Small Unmanned Aircraft Theory and Practice*, NJ:
Princeton University Press, 2012.