LEEVENSPARK

Standards governing the design of fire pumps are updated every few years. This is done to ensure that these address the new design challenges and overcome the shortcomings of previous designs. In this light it would be quite interesting to look back over the last 10 years and gauge the important changes that have happened in these standards. A close analysis will reveal that the designs have significantly evolved for the better; these now ensure superior performance and safety. Here we will look back and see some of the major changes in the standard of fire pumps and their resulting benefits. 1. Torsion analysis for right angle gear drives For vertical shaft pumps that are right angle gear driven, a torsion analysis is mandatory. This helps to identify and eliminate any damaging stresses or liner resonant frequencies created from the operating speed range of the rotating equipment. This will help avoid any potential damage to the pump equipment. 2. The right diese

Weaving is one of the processes that required in textile in terms of producing a fabric. From the fiber then become a yarn through some other process, weaving is a process of interlacing two types of yarn known as warp or ends (run parallel to the weaving machine known as loom) and weft or filling yarn (run perpendicular to the loom) to produce a rigid fabric. In order to interlace the  warp and weft yarn, there are three operations which often called primary motions are necessary: Shedding- The process of separating the warp yarn into two layers by raising the harness to form an open area between two sets of warps and known as shed. Picking- The process of inserting the filling yarn through the shed by the means of the shuttleless while the shed is opening. Beating- The process of pushing the filling yarn into the already woven fabric at a point known as the fell and done by the reed.

Frankly, on this development can dream all my life. When you look at it, do not even believe what is in principle possible. Engineers, designers and enthusiasts will be very interested in buying this display. The name of this development zSpace, which means the space in the third dimension. According to the developers, this display aims to enhance the capacity of human creativity, by combining a simple two-dimensional world with holographic, sensory rich space. This development to date has created a revolution in 3D design. Technologically zSpace consists of a 24-inch monitor, a stylus and special 3D glasses that come with the display. Three-dimensional modeling is entering a new phase in its development, with high realism of virtual holographic projection. Well, we can only wait for this gadget is fully integrated into the world of design and architecture.

 The principal of a Magnet train is that floats on a magnetic field and is propelled by a linear induction motor. They follow guidance tracks with magnets. These trains are often refered to as Magnetically Levitated trains which is abbreviated to MagLev. Although maglevs don't use steel wheel on steel rail usually associated with trains, the dictionary definition of a train is a long line of vehicles travelling in the same direction - it is a train. HOW IT WORKS: A maglev train floats about 10mm above the guidway on a magnetic field. It is propelled by the guidway itself rather than an onboard engine by changing magnetic fields (see right). Once the train is pulled into the next section the magnetism switches so that the train is pulled on again. The Electro-magnets run the length of the guideway. ADVANTAGES: Well it sounds high-tech, a floating train, they do offer certain benefits over conventional steel rail on steel wheel railways. The primary advantage is mainta

The helmet used by the U.S. military has changed dramatically over the years.In World War I, the M1917/M1917A1 helmets,They were replaced in 1941 by the M-1 "steel pot," the standard-issue helmet in World War II, the Korean conflict and throughout the Vietnam War. By the 1980s, U.S. military helmets had evolved into a one-piece structure composed of multiple layers of Kevlar  29 ballistic fiber. The helmet of the near future, however, may contain something more than extra protection from flying shrapnel. An Arizona State University researcher, working under a grant from the U.S. Defense Advanced Research Projects Agency (DARPA), is trying to develop a military helmet equipped with technology to regulate soldiers' brains. The technology is transcranial pulsed ultrasound, which delivers high-frequency sound waves to specific regions of the brain. Under the influence of these sound waves, neurons send impulses to their targets, exerting control over them. On the ba

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

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

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.

Having already celebrated the Pacific total solar eclipse earlier today, now seems like as good a time as any to punt these two space-related graphics out there for all to enjoy. It’s all about looking up in to the sky and getting big stuff up there,  For your delectation and edification, we present the new generation of super-telescopes (begging the question as to why everything has to be super these days, whether it’s storms or telescopes) and the European Space Agency’s next-generation heavy-lift rockets. They don’t come cheap, you know. Click on the graphics for an expanded view. New generation of super-telescopes

World’s Thinnest 2.5″ Hybrid Hard Drive By Western Digital Is Just 5mm Fat

Japan gets the world’s lightest Android tablet made from aircraft grade carbon-fiber.. NEC Medias Tab UL N08-D, a 7 inch tablet which is the lightest in the world weighing in at 249 grams only. It is just 69% of the weight of the Amazon Kindle Fire and 71% weight of the Google Nexus 7. It does not cut flab by giving up on features but by making use of a super light weight aircraft grade carbon-fiber..

The world's smallest artificial heart, made by Italian scientists. This tiny titanium pump was implanted in a baby, at the Bambino Gesu' Hospital in Rome May 24, 2012. Doctors from Rome's Bambino Gesu' Hospital saved the life of the 16-month-old baby with this artificial heart.

This is Toshiba T1100, the world first Laptop for the whole market. This was manufactured in 1985. This laptop ran entirely on floppy disks. It had no hard disk  

Sling Shot Camera: Innovative camera, designed by Eom Sung Young and Im Jung Eun, allows you to take amusing photos of scared people.  Slingshot inspired digital camera has two arms with built-in flash, small LCD screen, and an elastic string that activates the shutter. Surprise your friends and capture their genuine facial expressions. No more boring photographs!

Hi! Friends All the B.tech Students are invited to the Technical event held on 16 th of march conducted by the Department of Mechanical Engineering in Vishakapatnam,Andhra Pradesh. The event named as "YANTHRIC 2K12" in Avanthi institute of Engineering and Technology. The events of the fest are: 1.NEO LITHOS                     [Paper Presentation] 2.PECARINA                        [Poster Presentation] 3.TECHNO ACQUAINTA   [Technical Expo] 4.ROBO ZONE                     [Robotics] 5.GREEN CORNER              [Green innovations] 6.QUEST HOUR                   [Quiz] 7.FILM OPERA                    [Smart Movie Making] for more details visit :  www.aiet-mech.com

Hi! Friends All the B.tech Students are invited to the Technical event held on 16 th of march conducted by the Department of Mechanical Engineering in Vishakapatnam,Andhra Pradesh. The event named as "YANTHRIC 2K12" in Avanthi institute of Engineering and Technology. The events of the fest are: 1.NEO LITHOS 2.PECARINA 3.TECHNO ACQUAINTA 4.ROBO ZONE 5.GREEN CORNER 6.QUEST HOUR 7.FILM OPERA for more details visit :  www.aiet-mech.com

Here are some cool mechanical engineering t shirt quotes for you to write on your mechanical engineering class t shirt. Please share with us more mechanical engineering t shirt quotes in comments to this post. Gentlemen I will Start your Engines Suck-Squeeze-Suck-Squeeze We do it 4 stroke way I Screw for a Living Ask Me for a Lube job Have you checked your oil lately Let me tighten your bolts ! We do it Four Stroke way Let me check your Horn Rear End Collision Specialist Ask me about my Toolbox ! Got the Nerve to dare ME? Inspiration is only beginning rest is all about being ME! Nut is as per bolt Highly Mechanized Mechanical Engineering, a shear delight Get in gear with a mechanical engineer I am not a nut but i can screw well I believe in the big bang theory I am not a mechanic but a mechanical engineer Never take ME as granted! Do you have more witty and funky mechanical engineering t shirt quotes or slogans? Please share with us by commenting on this post. Want

The six-stroke engine is a type of internal combustion engine based on the four-stroke engine, but with additional complexity intended to make it more efficient and reduce emissions. Two different types of six-stroke engine have been developed since the 1990s: In the first approach, the engine captures the heat lost from the four-stroke Otto cycle or Diesel cycle and uses it to power an additional power and exhaust stroke of the piston in the same cylinder. Designs use either steam or air as the working fluid for the additional power stroke.[1] The pistons in this type of six-stroke engine go up and down three times for each injection of fuel. There are two power strokes: one with fuel, the other with steam or air. The currently notable designs in this class are the Crower six-stroke engine, invented by Bruce Crower of the U.S. ; the Bajulaz engine by the Bajulaz S.A. company of Switzerland; and the Velozeta Six-stroke engine built by the College of Engineering, at Trivandrum in Ind

   Tubeless tires are pneumatic tires that do not require a separate inner tube. Unlike traditional pneumatic tires which use a separate inner tube, tubeless tires have continuous ribs molded integrally into the bead of the tire so that they are forced by the pressure of the air inside the tire to seal with the flanges of the metal rim of the wheel. Traditional designs of pneumatic tires required a separate inner tube which could fail for a number of reasons, such as incorrect tire fit, friction between the tire wall and inner tube generating excess heat or puncture. Tubeless tire technology does away with the need for an inner tube thereby increasing safety. In a tubeless tire, the tire and the rim of the wheel form an airtight seal, with the valve being directly mounted on the rim. If a tubeless tire gets a small puncture, air escapes only through the hole, leading to a gentle deflation. Conversely, an inner tube could potentially burst like a balloon, leading to a rapid deflatio