6 results about "Landing gear" patented technology

An aircraft braking adaptation process is used to prevent rapid derotation of an aircraft causing damage to the front landing gear by formulating a braking command, applying the command to at least one brake, adapting the braking command by acquiring the aircraft trim and modifying the braking commands as a function of the aircraft trim.

This process limits the derotation speed and preserves the front landing gear.

The invention discloses an aircraft landing gear lifting device and a lifting method thereof, and relates to the technical field of lifting equipment. The invention comprises a bottom plate; a U-shaped plate is installed on the upper surface of the bottom plate through a lifting mechanism; a power mechanism is installed on the U-shaped plate; guide rails are fixed on the upper surfaces of two opposite arms of the U-shaped plate; Screw rod; one end of the two-way screw rod is connected with the output shaft of the power mechanism; sliders are arranged on both sides of the fixed block; a lifting groove plate is arranged between the two sliders; The upper surface of the lifting groove plate is provided with card slots side by side. The invention moves the lifting groove plate to the designated position through the lifting mechanism, and uses the power mechanism to match the lifting groove plate with the axle of the landing gear, which facilitates the movement of the landing gear of the aircraft or the replacement of tires, and has high market promotion value.

The invention relates to a control method for a magneto-rheological shimmy damper of an aircraft landing gear. The control method comprises the steps that the aircraft height, the aircraft flight speed, the aircraft flight deceleration and the aircraft descent speed are obtained; when the aircraft height is lower than a first height threshold value and higher than a second height threshold value,the initial working current of a coil of the magneto-rheological shimmy damper is obtained according to the aircraft flight speed, the aircraft flight deceleration and the aircraft descent speed; whenthe height of the aircraft is lower than a second height threshold value, acquiring an aircraft taxiing speed, an aircraft wheel swing angle, an aircraft wheel swing angle speed and an aircraft wheelswing angle acceleration; and the initial working current is adjusted according to the airplane taxiing speed, the airplane wheel swing angle, the airplane wheel swing angle speed and the airplane wheel swing angle acceleration, and a final working current value is obtained. Firstly, the control process of the control method is simple and free of cumbersome, the control reliability is further improved, the working current of the magneto-rheological shimmy damper coil can be accurately controlled, and the damping of the magneto-rheological shimmy damper can meet the requirement.

The invention relate to the technical field of aircrafts, in particular to an aircraft with solar cell panels. The aircraft comprises propellers, motors, brackets, a base, a battery, a main control board, a voice machine, a remote control, an undercarriage and the solar cell panels. The four corners of the base are connected with the brackets correspondingly. The solar cell panels are mounted on the upper surface of the middles of the brackets correspondingly. The motors are mounted on the upper surfaces of the tail ends of the brackets. The propellers are mounted on the upper portions of themotors. The undercarriage is mounted on the lower surface of the base, the battery is mounted on the lower surface of the center area of the base, and the battery is connected with the solar cell panels through electric wires. The main control board is mounted on the upper surface of the center area of the base and further internally provided with a power source conversion mechanism. The voice machine is mounted on the upper surface of the main control board and connected with the power source conversion mechanism in the main control board through a wire. The voice machine can make a sound when the aircraft with solar cell panels is lost in the place where an operator cannot see or cannot be controlled by the remote control.