ENGINE-PUMP

Motorcyclists know what a tire puncture on the road. What should I do if I didn’t have the pump? With me this often happened. Here’s what the replacement pump I would suggest. Make type spark plug a simple device (see figure). To inflate the tire, you must first start the engine and turn off the Read more…

CATAMARAN — ROTOR-SAIL

CATAMARAN — ROTOR-SAILCATAMARAN — ROTOR-SAILI want to tell readers about the catamaran, the movement is carried out with the help of Magnus effect. The Magnus effect is that when an airflow of the rotating body formed a force perpendicular to the direction of flow. As the cylinder rotates, for example, close to its walls the layers of air begin to move in a circle, making one side of the rotating body increases the speed around a cylinder flow, and on the other side a decrease. As a result, the surface of the cylinder are formed by areas of increased and reduced pressure, which leads to the formation of forces, which can be used for ships. It is this force that changes the direction of flight of the “cut” balls in tennis and football.

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ADD MIRROR

The schematic of this flip shelves became almost a classic and even entered one of the tutorials on technical drawing for school students. However, there is no limit to perfection. Its simple design can be augmented mirror, which is hinged to the connecting rod with bent tin petals. This mount makes it close. However, the Read more…