Dynamics of Aircraft Flight

7Aircraft Simulation Model

We here discuss an observation drone-type aircraft, for which there are several guidance modes.

The first guidance mode is the so-called “remote-controlled” mode, which is provided from the ground. The aircraft then performs the maneuvers commanded by an operator from the ground.

The second mode is the so-called “inertial” mode. In this mode, the control surfaces order maker no longer undertakes the piloting calculations. Guidance and piloting are provided thanks to the information delivered by the drone’s inertial unit.

At any time during these inertial phases, the operator has the option of switching to the “remote-controlled” mode.

Indeed, during probationary tests, it may prove useful to ensure the in-flight readjustment of the inertial unit following the observation of discrepancies between the simulated flight and the actual flight. This adjustment is carried out by flying over, in remote-controlled mode, a certain number of predetermined points stored in the inertial unit of the aircraft.

Sometimes, the destruction of the aircraft is required and it is necessary to recompose the trajectories telemeasured and/or determined following orders from the control surfaces order maker, in order to determine the origin of the failures and to make the necessary corrections.

7.1. Simulation model of the atmosphere

where:

Z is the altitude expressed in meters; ...