LEEVENSPARK

using this kind of the solar powered boat or the ships we can able to save the fuel and protect the atmosphere from pollution and global warming.   But there should be a large batteries that are capable enough to supply the power to the high torque motors and to drive the propellers at a required speed to reach the destination and on the other side we have to keep in mind that the time  to reach to the destination is also an important thing that satisfies the travelers.  So the scientist are improving the solar  panels in which a way that the panel can able to grasp the heat from the atmosphere and convert the heat into the direct current [DC].In order to make that scientists are using the nano technology to decrease the size of each crystal fine pill to compress the size of the panel and increase the life and efficiency of the solar panel  because the solar panel is kept in the open atmosphere and it should be capable enough to resist the different outer atmospheric conditi

Scientists have created the smallest petrol engine in the world ( less than a centimeter long not even half an inch ), small enough to power a watch or any small gadget. The mini-motor, which runs for two years on a single squirt of lighter fuel, is set to revolutionize world technology. It generates 700 times more energy than a conventional battery. It could be used to operate laptops and mobile phones for months doing away with the need for charging. Experts believe it could be phasing out batteries in such items within just six years. The engine, minute enough to be balanced on a fingertip, has been produced by engineers at the University of Birmingham.

This type of power screw is used for high  speed high efficiency applications, and is  becoming more common. It has become  popular because it is essential in CNC, as well as robots and aircraft actuators. The ball screw assembly is as shown below and includes a circular shaped groove cut in a helix on the shaft. The ball nut also includes an internal circular shaped groove which matches the shaft groove. The nut is retained in position on the shaft by balls moving within the groove. When the nut rotates relative to the shaft the balls move in one direction along the groove supporting any axial load. When the balls reach one end of the nut they are directed back to the other end via ball guides. The balls are therefore being continuously recirculated. The recirculated ball screw has the following advantages and disadvantages to the conventional threaded power screws:  Advantages: 1.High Efficiency - Over 90% 2.Predictable life expectancy 3.Precise and repeatable mo

Well,many of will be thinking that HOW AEROPLANES FLY??,Same question strike in my mind,so here is the answer for you guys. Drop a stone into the ocean and it will sink into the deep. Chuck a stone off the side of a mountain and it will plummet as well. Sure, steel ships can float and even very heavy airplanes can fly, but to achieve flight, you have to exploit the four basic aerodynamic fo rces: lift, weight, thrust and drag. You can think of them as four arms holding the plane in the air, each pushing from a different direction. First, let's examine thrust and drag. Thrust, whether caused by a propeller or a jet engine, is the aerodynamic force that pushes or pulls the airplane forward through space. The opposing aerodynamic force is drag, or the friction that resists the motion of an object moving through a fluid (or immobile in a moving fluid, as occurs when you fly a kite).If you stick your hand out of a car window while moving, you'll experience a very simple demon

A clutch is a mechanical device that provides for the transmission of power (and therefore usually motion) from one component (the driving member) to another (the driven member) when engaged, but can be disengaged. Clutches are used whenever the transmission of power or motion needs to be controlled either in amount or over time (e.g., electric screwdrivers limit how much torque is transm itted through use of a clutch; clutches control whether automobiles transmit engine power to the wheels). In the simplest application, clutches are employed in devices which have two rotating shafts (drive shaft or line shaft). In these devices, one shaft is typically attached to a motor or other power unit (the driving member) while the other shaft (the driven member) provides output power for work to be done. In a torque-controlled drill, for instance, one shaft is driven by a motor and the other drives a drill chuck. The clutch connects the two shafts so that they may be locked together and s

Surface tension is a contractive tendency of the surface of a liquid that allows it to resist an external force. It is revealed, for example, in the floating of some objects on the surface of water, even though they are denser than water, and in the ability of some insects (e.g. water striders) to run on the water surface. This property is caused by cohesion of similar molecules,  and is responsible for many of the behaviors of liquids. Surface tension has the dimension of force per unit length, or of energy per unit area. The two are equivalent—but when referring to energy per unit of area, people use the term surface energy—which is a more general term in the sense that it applies also to solids and not just liquids.The cohesive forces among liquid molecules are responsible for the phenomenon of surface tension. In the bulk of the liquid, each molecule is pulled equally in every direction by neighboring liquid molecules, resulting in a net force of zero.

Thanks to gyros, accelero meters  and sophisticated control  mechanisms, remaining upright on  a two-wheeled vehicle is no longer  quite the balancing act it might  once have been, even when at a  standstill. Visions of future mobility  like Honda's U3-X take such ideas  in whole new directions, quite  literally, by including multi- directional capabilities, and  concepts such as Supple go even  further still by ditching wheels  altogether in favor of balls. It's this  freedom of movement that inspired  a group of students from the  Charles W Davidson College Of  Engineering at San Jose State  University to begin work on the  ambitious Spherical Drive System  (SDS) electric motorcycle. The SDS concept vehicle is described as a self-balancing electric motorcycle that rides on spheres. Rather than using the kind of mechanical gyros that help keep the Gyrobike or the C-1 from Lit Motors in an upright position, the SDS creation uses data from MEMS gyroscopic sensor technol

Next week Audi will debut their prototype Wörthersee e-bike, which promises to be a highly advanced, versatile electric bike from the German automakers. The Audi e-bike will be unveiled at Wörthersee in Carinthia, Austria where trial biker Julien Dupont and downhill specialist Petra Bernhard will demonstrate their stunts and streetbike skills. “As a high-performance e-bike for sports and trick cyc ling, it features the Audi core competences of design, ultra, e-tron and connect,” stated Audi’s Head of Design Wolfgang Egger. weighs 24 pounds and features a compact frame made of carbon fiber-reinforced polymer with a low center of gravity to make it superbly agile. The same carbon fiber-reinforced polymer is also used for the 26″ wheels which feature an innovative “Audi ultra blade” design with broad flat spokes for an optimized transmission of pedal power. The 2.3 kW electric motor sends up to 184 lb-ft. of torque to the rear wheel and uses a lithium-ion battery that only need

Mechanical engineering is a discipline of engineering that applies the principles of physics and materials science for analysis, design, manufacturing, and maintenance of mechanical systems. It is the branch of engineering that involves the production and usage of heat and mechanical power for the design, production, and operation of machine s and tools. It is one of the oldest and broadest engineering disciplines. The engineering field requires an understanding of core concepts including mechanics, kinematics, thermodynamics, materials science, and structural analysis. Mechanical engineers use these core principles along with tools like computer-aided engineering and product lifecycle management to design and analyze manufacturing plants, industrial equipment and machinery, heating and cooling systems, transport systems, aircraft, watercraft, robotics, medical devices and more. Mechanical engineering emerged as a field during the industrial revolution in Europe in the 1

MARK ZUCKERBURG GETS MARRIED!In a surprise ceremony, Facebook CEOand founder Mark Zuckerberg marriedhis longtime girlfriend, Priscilla Chan,in a private wedding at his home inPalo Alto California on Saturday.Zuckerberg, who just became abillionaire as a result of the FacebookIPO on Friday, reportedly placed a ringon his wife’s finger during theceremony — the ring was describedas featuring a “very  simple ruby.”According to the Associated Press,Zuckerberg’s marriage to PriscillaChan took place in front of about 100invited guests who thought they werecelebrating Ms. Chan’s medical schoolgraduation. It all happened inZuckerberg’s backyard.Take a look at Zuckerberg’s personalpage on Facebook, and you’ll see theabove picture, which Zuckerbergreportedly placed onto his own site asa change of his status after theceremony.The couple met while both wereattending Harvard, and have beentogether for nine years. —

Awesome work done by mechanical engineers.The Real Grass-roots Innovation by Indian wins Best Product Design!This winning product was made at a minuscule cost of Rs. 300 and has potential to affect lives of millions of people across the globe.  Project Goal:“Load carrier for labor” project aims to improve the working condition of laborers and wo rkers at many places globally like construction site, factories, ports, railway stations, etc.Objective:  The objective is to prevent various occupational hazards and demonstrating Product design and ergonomic consideration in welfare of human life.This is called Real Engineering..