This is an electrical propulsion method with no moving parts which applies to any conductive fluid including water, liquid metal or plasma. Here I am demonstrating the principle with water. Essentially two electrodes in water have a current passed between them in a magnetic field and the water is forced out the back creating thrust. It is not real
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ly a commercial proposition but was featured in "The Hunt for Red October" as the Soviet stealth sub. In my model there are two 1 inch NIB magnets about an inch apart. At right angles to this are two electrodes which pass about 1. 6 A 9. 6 VDC in salt water. ie about 15 watts. Power is by a model car NiCd pack. The whole decidedly unseaworthy construction is made of Balsa and is about 8 inches long. Using off board power of 1kW (100V 10A) there is a lot more action and production of hydrogen and oxygen or chlorine bubbles streaming from the stern, but I don`t have a big enough tub of saltwater to test it for speed. On the right is the ignition of the hydrogen bubbles with the bright yellow flame from the sodium in the seawater bubbles. Normally a hydrogen flame is almost colourless. After a short while the electrodes wear away and the water fills with debris, presumably insoluble salts of the metal electrodes. Features: 2. 5 times the power (16 alkaline AA cells giving 24V - previously 9. 6V NiCd pack) Typically 50W output from salt water swimming pool (20V 2. 5A) through to near saturated salt solution (12V 4. 5A. I have finally found the description of the Japanese MHD boat, the "Yamoto" made by Mitsubishi in the 1990`s and weighing 185 tons which travelled at 15 km/h. It uses a superconducting 4 Tesla magnet, and the round cross section of the motor looks remarkably like mine but about 10 times the diameter (260mm)....
This project fits more for custom made battery casing that can have more space to hide things inside. This switch with few alterations can be used for any other project as well but is designed based on e-bike needs! This project use a clever functionality of....
The circuit described here uses ultrasonic oscillations and operates based on the propagation velocity of these oscillations in the air. Thus, we can easily determine the distance of two points if the time within which the wave travels this distance is....
Sometimes the precious metals are hidden too deep and are not detected except with complicated devices. In many cases, however, small pieces of precious metal buried near the surface can be detected by relatively simple means. Everyone is very attractive to....
Many times for various reasons we forget or can not water the plants that we have in our homes. And many humidity sensors units just notify us with a beeping sound or with a flashing light, that the pot needs watering. But what if we are away from home? This....
The principle behind a metal detector is really very simple. Proof of this is the circuit that follows, in which it proves that the construction of a metal detector can be done in the minute, with few components that we find very easily everywhere. With the....
The sub-harmonic bass generator is a sound producing unit for guitars. The sound it produces looks very much like that of the bass guitar. The octave generator is sometimes quite unusual since it does not produce any of the usual ways of coloring the sound,....
In the past the sounding (sea bottom measurement) was done with the "bullet", that is, with a heavy lead object that the seamen plucked into the sea hung from a calibrated rope. As soon as the "bullet" reached the bottom, the depth appeared directly from the....
This Amplifier was designed to have the following specifications: Distortion less than 0.1% at full power of 100W even at 20KHz. Power has to be attributed to an extended bandwidth. The output transistors must be protected against short circuits. The power....
A series of LEDs serve to alert the gardener when plants need water. Using two conventional digital integrated LEDs and a series of LEDs, we make a very useful device for gardening. The device detects the amount of water in the pot and alerts the grower.....
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