5 results about "Sonic boom" patented technology

Commercial supersonic aircraft and associated system and methods. A representative real time sonic boom warning system can detect when the trajectory of the commercial supersonic aircraft is likely to cause sonic booms that disturb designated areas (e.g., over land or population centers) and notify the operator accordingly.

This application relates to a method, apparatus, device, and medium for locating sonic booms of a single rocket debris. The method includes: calculating the time when the monitoring equipment receives the sonic boom signal based on the distance between the monitoring equipment and the sonic boom source and the time when the rocket debris generates the sonic boom signal; calculating the squared difference between the sonic boom signal received by each monitoring equipment and the predicted sonic boom time, setting the squared difference as the objective function of the sonic boom location model, setting constraints on the sonic boom location model based on the range of the sonic boom's occurrence time and location, constructing the sonic boom location model using the objective function and constraints; optimizing the hyperparameters of a genetic algorithm using a Bayesian optimization method, and solving the sonic boom location model using the optimized genetic algorithm to obtain the sonic boom location result. This method can accurately locate rocket debris.

The invention relates to the field of hearing aids, in particular to an impulse noise suppression method and system for a hearing aid, and the system comprises a machine body module, a processing module, a protection module and a driving module. The hearing aid main body comprises a shell, a sound receiver, and a battery, a charging interface, a processor, a broadcaster and keys which are arranged in the sound receiver, the external ear hanging piece is hung at the external ear part and is used for mounting and supporting the hearing aid main body, and sudden pulse noise is inhibited by setting the maximum upper limit of the volume when the player plays; the driving module drives the sound receiving device to rotate, so that the follow-up sound processing module can process pulse noise conveniently, meanwhile, the driving module can drive the protective net to wrap the sound receiving device, at the moment, the protective net can reduce sonic boom caused by air flow impact when the sound receiving device receives sound and filter some unnecessary noise to a certain extent, external pulse noise interference is further prevented, and the sound receiving device can be used for sound receiving. Therefore, the hearing aid can be normally used under the interference of pulse noise.

The present application relates to the technical field of aviation, and in particular to a supersonic civil aircraft configuration. In the supersonic civil aircraft configuration of the present application, engine nacelles are mounted above a rear fuselage between wings and horizontal stabilizers; the lower portions of inlets are shielded by the trailing edges of the wings, and the lower portions of outlets are shielded by the leading edges of the horizontal stabilizers; by means of the shielding effect of the wings and the horizontal stabilizers, shock waves generated by engines are prevented from propagating to the ground, effectively reducing the ground sonic boom loudness of such an aircraft; the engines and pylons can perform small-angle pitch deflection around pivot shafts in the pylons, thereby adjusting mounting angles of the engines and improving the propulsive efficiency of the engines under off-design operating conditions; during supersonic cruising, the tips of the horizontal stabilizers can be folded upward to provide an additional vertical stabilizer volume, so as to compensate for the loss of vertical stabilizer efficiency during supersonic cruising, and preventing expansion waves generated by engine exhaust nozzles and the horizontal stabilizers from propagating to the ground; and during low-speed takeoff / landing, the tips are unfolded to ensure a large vertical stabilizer area, so as to meet the requirements of trim in takeoff / landing configuration.

The utility model relates to the technical field of industrial dust removal equipment, and discloses efficient dust suppression equipment for a drag chain distribution vehicle, when the distribution vehicle moves to a blanking area along a guide rail, a side discharge device transports materials on the distribution vehicle to a coke blanking box in the blanking area, then double-fluid drag chain equipment is started, and the materials are discharged from the coke blanking box. The double-fluid spray head enables gas in the gas-liquid double pipe to form a local supersonic speed area at the throat part of the spray nozzle, at the moment, strong turbulence and shearing force can be caused to form a sonic boom effect, and then water molecules in the gas-liquid double pipe are torn into tiny liquid drops (generally smaller than 10 microns), so that dust in the transportation process is inhibited, and the transportation efficiency is improved. And no extra dust pollution is generated.