For testing F4N ground reactions The aircraft is trimmed on-ground. sim-time-sec ge 0.25 Brake testing sim-time-sec ge 5 Brake testing sim-time-sec ge 10 Brake testing sim-time-sec ge 15 Brake testing sim-time-sec ge 20 Steer left sim-time-sec ge 20 Steer right sim-time-sec ge 21 Steer straight sim-time-sec ge 23 The starter for both engines is turned on. sim-time-sec ge 25.0 Cutoff is turned off, allowing fuel to flow. propulsion/engine[0]/n2 ge 15.0 propulsion/engine[0]/n2 propulsion/engine[1]/n2 propulsion/starter_cmd propulsion/engine[0]/thrust propulsion/engine[1]/thrust Move throttle to full for take-off. propulsion/engine[0]/n2 ge 15.0 5.0 propulsion/engine[0]/n2 propulsion/engine[1]/n2 propulsion/engine[0]/thrust propulsion/engine[1]/thrust velocities/vc-kts Notify when velocity goes above 10 kts. velocities/vc-kts ge 10.0 propulsion/engine[0]/n2 propulsion/engine[1]/n2 propulsion/engine[0]/thrust propulsion/engine[1]/thrust velocities/vc-kts Brake testing velocities/vc-kts ge 10.0 5.0 Brake testing velocities/vc-kts ge 10.0 10.0 Brake testing velocities/vc-kts ge 10.0 15.0 Slowed to stop velocities/vc-kts le 1.0 fcs/throttle-cmd-norm[0] eq 0.3