Posts

Showing posts with the label S

Tera Copy 2.2 RC+Portable incl serial

Image
Name of the software  : Tera Copy 2.2 RC+Portable incl serial Licence               : free System Requriments    : Win 98,XP,XP[Sp-1,2,3],Vista,WIN 7,Win 8 File size             : 6.15 MB Version               : 2.2 Pro click here Snapshot

Tera copy

Image
Name of the software : Tera copy Licence             : Free  System Requirements  : XP,XP[Sp-1,2,3],WIN 7,WIN 8 File Size            : 1.76 MB click here

speed of the bearing

Image
Each bearing type has its own limiting speed. The theoretical speed that bearings can run at safely, even if heat generation by internal friction occurs, is called the maximum permissible speed. The permissible speed is related to bearing type, type of cage, lubricant type, load and cooling conditions to which the bearing is subjected  For contact rubber seals(2RS type), the permissible speeds are limited by the peripheral velocity of the seal lip.  Normally, this is approximately 50 - 60% of that of non-contact rubber seals. If light contact rubber seals are required, this must be stipulated with the order. If high loads occur, the permissible speed values must be reduced and the following supplementary factors applied, except under standard operating conditions(Cr/P<12, Fa/Fr>0.2 )  COMPENSATION FOR MAXIMUM PERMISSIBLE SPEED DEPENDENT ON LOAD RATIO   Cr/P 5 6 7 8 9 10 11 12 COMPENSATION FACTOR 0.72 0.79 0.85 0.90 0.93 0.96 0.98 1.00 COMPENSATION FOR MAXIMU

science goes as bad ...

Image
science goes as bad... Whether or not this is actually scientifically possible doesn’t matter. The main idea behind any science fiction just has to be believable within the parameters of the world in which it is set. Indeed, the director of the new  Planet of the Apes  movie, Rupert Wyatt, has said he found the explanation of the original 1960s films – that the apes evolved naturally after being domesticated by humans – unsatisfying. Some people might find it odd to talk about science fiction needing plausible explanations. The clue is there in the name – science  fiction . And there are probably plenty of people who dislike the entire genre because it inevitably includes unrealistic elements. But really it’s an issue that extends to all fiction. As George Bernard Shaw supposedly put it, you are allowed one big lie and everything else must be logical. Perhaps you can even get away with a few lies, but ask too much of the audience and it all becomes too distracting to accept even the b

Spiral Bevel

Image
Spiral Bevel Although the straight bevel is cheaper and mechanically efficient, the meshing of the gears causes an unwanted noise, which has been reduced by introducing a helical form of tooth. It is impossible to generate a helix on a tapered pinion, so the gear is called as a spiral bevel. Figure 26.36 illustrates the construction of the gear, A number of teeth are generated from the centre of the crown wheel, and form a left-handed spiral in the case of the pinion. This direction provides a large outward thrust on the drive and a smaller inward thrust on the over-run so that wear of the pinion bearing increases the backlash instead of causing seizure of the gear. Fig. 26.36. Spiral bevel. Since the crown wheel teeth are inclined to the pinion, the tooth pressures are much higher. The gear oil with no additives, and high-viscosity, suitable for the straight bevel type, is not satisfactory when used in spiral bevel units. The oil film brakes down under the high loads, causing rapid we

Straight Bevel

Image
Straight Bevel Fig. 26.35. Straight bevel The main features of the bevel type of gear is illustrated in Fig. 26.35. The tapered teeth, generated from the centre, are machined on the case-hardened steel gears and then ground together to form a 'mated pair'. The position of the crown wheel relative to the pinion determines the direction of rotation of the axle shaft. If the crown wheel is fitted on the wrong side, which is possible on some vehicles, then this provides one forward and several reverse ratios. For correct meshing and for setting the clearance between the teeth (backlash), adjusters in the form of distance pieces, shims or screwed rings are used. When backlash is too small, expansion results due to heat and wear is caused by lack of lubrication. On the other hand excessive backlash produces slackness and noise. Each manufacturer recommends a suitable backlash, but it is generally in the region of 0.15 mm for cars and 0.25 mm for heavy vehicles.

superconic planes

Image
The above seeing image is a sound speed planes which is designed with a twin supersonic engines after the servive of the plane which is displayed in the Astronomical Space museum in united states of america The above image shows the black bird supersonic plane which is used for the u.s air force in 19th centruy that the plane travel with sound speed above mach 3 which is displayed in the american muesum. The plane is also called as SR-71 which is the model name of the plane. [ click on the images to get the high resolution view of the picture ] 

Front Axle and Steering System

Image
Front Axle and Steering System Front axle carries the weight of the front part of the automobile as well as facilitates steering and absorbs shocks due to road surface variations. The front axles are generally dead axles, but are live axles in small cars of compact designs and also in case of four-wheel drive. The steering system converts the rotary motion of the driver's steering wheel into the angular turning of the front wheels as well as to multiply the driver's effort with leverage or mechanical advantage for turning the wheels. The steering system, in addition to directing the vehicle in a particular direction must be arranged geometrically in such a way so that the wheels undergo true rolling motion without slipping or scuffing. Moreover, the steering must be light and stable with a certain degree of self-adjusting ability. Steering systems may also be power assisted. The chapter discusses the front axle construction and its align­ment, and steering geometry and steering

Shakthi jr.NTR 2011

Image
Shakthi[Jr.NTR] 2011 Click on the song to Download (128 kbps) 01 – Thaliya Thaliya Singers : Ranjith Lyrics : Ramjogayya Sastry Download 02 – Prema Desham Singers : Hemachandra, Saindhavi Lyrics : Ramjogayya Sastry Download 03 – Mathileka Pichiga Singers : Ranjith, Chinmayi Lyrics : Jonnavittula Download 04 – Maha Rudra Shakti Singers : Ranjith, Muralidhar, Hanumantha Rao, Hemachandra, Rita, Saindhavi, Malavika Lyrics : Jonnavittula Download 05 – Surro Surra Singers : Javid Ali, Suchitra Lyrics : Ramjogayya Sastry Download 06 – Yamaga Unde Singers : Karunya, Malavika Lyrics : Ramjogayya Sastry Download 07 – Mahishasura Mardhini Singers : Sri Vardhini, Aalap – Sharatha Download  CLICK HERE TO DOWNLOAD ALL THE SONGS [ZIPPED]

Life Elements Came from Space

Image
GIST OF THE STORY Researchers have long been trying to explain the origin of the ammonia that triggered the formation of the first biomolecules on Earth. Meteorites may have released compounds including hydrocarbon chains and a large amount of ammonia, which is rich in nitrogen.                                             A meteorite found in Antarctica adds extra impact to the theory that the essential building blocks of life on Earth came from outer space, say scientists. The team from the University of Arizona say they have discovered a "carbonaceous chondrite" meteorite -- found in 1995 and called "CR2 Grave Nunataks 59229" -- contains relatively high amounts of ammonia and amino acids. Carbonaceous chondrites meteorites contain abundant organic materials as they have not been melted, and much of their original chemical composition remains intact. The research, led by Professor Sandra Pizzarello, is published in Proceedings of the National Academy of S

Motor Vehicle Safety

Image
Motor Vehicle Safety As the phrase aptly puts it - "it is better to be late than be Late Mr..." Accidents on Indian roads are more a rule than an exception today. The reasons are many. Underage drivers, reckless, drunken driving, no regards for safety of self and others... It is up to each one of us, all of us who use the roads (and everyone does), to be aware of all safety rules, and follow them. For example, how many of us use seat belts, even though we know we should, how many of us speed through red lights, knowing that we might collide with an oncoming vehicle. These are exactly the things we should avoid. At our site, we tell you ways to ensure your and your co- passenger's safety, do's and don'ts while driving, tips to prevent your vehicle from getting stolen, and much more. The next time you are in the driver's seat, remember to follow them.      Fasten your seat belts Car crashes are a leading cause of death. Aside from always following traffic signs

Save fuel

Save fuel :- ·          Do not use the clutch too much. ·          Switch the vehicle off at red light stops. ·          Drive in gear corresponding to the speed. ·          Get your vehicle serviced regularly. ·          A poorly tuned engine can increase fuel consumption by up to 50% ·          Driving at 90 kilometers an hour rather than 100 can reduce fuel consumption by 10% ·          Under inflated tires can increase fuel consumption by 5% ·          A loaded roof rack will increase fuel consumption by as much as 5% in highway driving. ·          Even an empty roof rack can increase consumption by 1%. If the carrier is not attached to the vehicle, remove it when not in use. ·          Avoid "Jack Rabbit" starts, not only do they increase fuel consumption, but are hard on your tires. Anticipating stops and avoiding abrupt stops will decrease fuel consumption and increase the life of your brakes and tires. ·          Avoid unnecessary steering wheel movement since each si

Steering Systems

Image
Steering Systems 27.6.1. Function and Linkage of a Steering System The function of a steering system is to convert the rotary movement of the steering wheel in driver's hand into the angular turn of the front wheels on road. Additionally, the steering system should provide mechanical advantage over front wheel steering knuckles, offering driver an easy turning of front wheels with minimum effort in any desired direction. The main causes of stiff steering include (i) insufficient lubrication of the king-pins or steering linkage, (it) tyre pressure too low, (Hi) wheels out of track, i.e. toe-in not correct, and (iv) stiffness in the steering column itself, caused by lack of lubricant or over tightening. The steering system is designed to enable the driver to control and continuously adjust the steered path of the vehicle. Also it provides a positive response to whatever direction the driver may makes on the steering wheel. Fig.27.42. Relationship of steer angle speed and vehicle spee