An exhaust system for a combustion engine vehicle includes an exhaust pipe extending between an exhaust inlet disposed opposite an exhaust outlet. The exhaust inlet and exhaust outlet are in fluidic communication with one another. The exhaust inlet is configured to receive an exhaust gas produced by an internal combustion engine of the combustion engine vehicle. A second pipe has an air inlet extending from and connected to the exhaust pipe. The second pipe is configured to be in fluidic communication with the exhaust outlet. The air inlet is configured to receive an outside flow of air. The exhaust gas from the combustion engine vehicle and the outside flow of air captured by the air inlet when the combustion engine vehicle is moving forward are configured to be combined and to cooperatively exit out the exhaust outlet.

An adaptable modular power system (AMPS) is hierarchical in a number of ways. AMPS modules connect to a backplane, and one or multiple AMPS backplanes can form an AMPS domain. At the same time, the vehicle electronics is modular, with various payload boxes needing to communicate with each other. A common power and signaling cable is provided to interconnect payload boxes. A dedicated connector system is also provided so that AMPS modules may communicate, control, receive data, and supply and receive power.

An adaptable modular power system (AMPS) is hierarchical in a number of ways. AMPS modules connect to a backplane, and one or multiple AMPS backplanes can form an AMPS domain. At the same time, the vehicle electronics is modular, with various payload boxes needing to communicate with each other. A common power and signaling cable is provided to interconnect payload boxes. A dedicated connector system is also provided so that AMPS modules may communicate, control, receive data, and supply and receive power.

A personal watercraft includes a floatation member, a thrust assembly, a steering assembly, and a braking assembly. The assemblies may be actuated either mechanically or electrically. The thrust assembly is human powered, solar powered, or electric powered. The thrust, steering, and braking assemblies can be added after-market to an existing stand-up paddle board (SUP), or built into one or a plurality of SUPs during initial manufacturing. When the thrust assembly is human powered, it is leg or arm powered. When the thrust assembly is leg powered, the legs can move backward and forward in a sliding motion, up and down in a stomping fashion, or move in a loop trajectory. When the thrust assembly is arm powered, the arms can move forward/backward together or separately. The thrust assembly includes one or a plurality of paddles or flippers that are positioned to the side or under the SUP.

A personal watercraft includes a floatation member, a thrust assembly, a steering assembly, and a braking assembly. The assemblies may be actuated either mechanically or electrically. The thrust assembly is human powered, solar powered, or electric powered. The thrust, steering, and braking assemblies can be added after-market to an existing stand-up paddle board (SUP), or built into one or a plurality of SUPs during initial manufacturing. When the thrust assembly is human powered, it is leg or arm powered. When the thrust assembly is leg powered, the legs can move backward and forward in a sliding motion, up and down in a stomping fashion, or move in a loop trajectory. When the thrust assembly is arm powered, the arms can move forward/backward together or separately. The thrust assembly includes one or a plurality of paddles or flippers that are positioned to the side or under the SUP.

A motion control method and system for a biomimetic robotic fish based on an adversarial structured control, includes: taking the accuracy and speed of motion to the target point as a reward term, and taking a power sum of servomotors as a loss term to construct an optimization objective function; optimizing parameters of a central pattern generator model that generates a global control quantity of a servomotor, after curing its parameters, optimizing the parameters of the servomotor compensation control model; iteratively optimizing the parameters of the model; obtaining the global control signal and compensation control signal of the biomimetic robotic fish through the trained model, and using the linear combination of the two sets of output signals as the control signal of the servomotor of the robotic fish to realize the motion control of the fish.

A jewelry display includes a ferromagnetic planar substrate and a bracket configured to be attached to a wall. The bracket has at least one wall engagement surface disposed along an inner surface and at least one ferromagnetic planar substrate engagement surface disposed along an outer surface. An adhesive backed non-slip covering adhesively attaches to the substrate engagement surface. At least one bracket magnet is disposed on the inner surface of the bracket. A plurality of jewelry fixtures are configured to be removably attached to the front surface of the ferromagnetic planar substrate, each jewelry fixture having at least one permanent fixture magnet and a jewelry holding structure, where the at least one permanent fixture magnet of each jewelry fixture is magnetically attracted to the ferromagnetic planar substrate.

A jewelry display includes a ferromagnetic planar substrate and a bracket configured to be attached to a wall. The bracket has at least one wall engagement surface disposed along an inner surface and at least one ferromagnetic planar substrate engagement surface disposed along an outer surface. An adhesive backed non-slip covering adhesively attaches to the substrate engagement surface. At least one bracket magnet is disposed on the inner surface of the bracket. A plurality of jewelry fixtures are configured to be removably attached to the front surface of the ferromagnetic planar substrate, each jewelry fixture having at least one permanent fixture magnet and a jewelry holding structure, where the at least one permanent fixture magnet of each jewelry fixture is magnetically attracted to the ferromagnetic planar substrate.

Embodiments of the present invention are directed to a modular, biomimetic, underwater vehicle capable of propulsion using one or more tail undulation methods, such as anguilliform or carangiform propulsion methods.

Embodiments of the present invention are directed to a modular, biomimetic, underwater vehicle capable of propulsion using one or more tail undulation methods, such as anguilliform or carangiform propulsion methods.