Touchdown

Liftoplane: touchdown RSI: touchdown

The time scaling is 1:10

At the beginning of this operation, the rotors had the same high forward winding speed of about 19.9 m/s as before, consuming a power of 28.3 kW, but they were switched into freewheeling just upon the touchdown event. The aircraft is decelerating horizontally at a rate of about 0.125g, having a horizontal speed of 20.81 m/s. At the same time the aircraft has a vertical descending speed of about 0.6 m/s, which is damped by the undercarriage and the forward wheel support. Inflow increased to 4.0 m/s. The aircraft operates like a lift going up at a speed of 4.5 m/s under a gliding wing with the equivalent LDR of 2.8. The aircraft is handled by using the biangular handling based on pitches with values of –23.8° and 60.9°. The rotors have a PGS-state (12.4°, -70.0°, -5°) with almost maximal magnitude of the negative gain. In the animation above, this operation overlaps with the beginning of the next operation of aerial braking.