something special in life is necessary

hi...to all bloggers ...so far in my life i noticed that something special in your life is always necessary,
and this special success is of any kind ...you never come to know about it...some peoples realise whats the thing will be going to give them a huge success or may be a huge disappointment....
i m writting this post with a reason because still i don't know what i have to do in my life....
i have decided to do merchant navy after my b.tech but i still don't know if i can make it or not ..and after that i want to be a car designer.....
But for a success in life ,sometimes i feel that its not enough ,atleast merchant navy but as a car designer if i m able to make design at my best i ll surely get some respect and a bit of taste of success in my life....
and i want some suggestion what guys i mean you make you feel every time enthusiastic, for your dream ..how you guys live upto your dreams and follow that...
i really need  that type of zeal nad it ll be must come from the inside of my heart i know that too....
but........
hope i can do that

Mechanical Component Reverse Engineering Project Examples

Reverse engineering may be required when a component or its spare parts are no longer available, or the component is failing or not functioning properly and the original manufacturer cannot provide the necessary engineering support to correct the problems. The goal in such cases is to generate the necessary technical information to support, replace, or improve the component.

Examples of LCE reverse engineered components include:

• Fire-fighting sprinkler valves
• Air-conditioning and refrigeration system packed and packless valves (see below)
• Mechanical seals
• Air conditioning system dryer housing assembly
• High temperature bolt/washer assembly
• Bleed-air valve components

AC System Valve

The application was a 7/8 inch AC system valve on U.S. Navy ship for which there was no OEM spare part or maintenance support, no similar commercial valves available, and no drawings available. We reverse engineered the 21 individual parts not available off-the-shelf, including determination of dimensions, tolerances, material specifications, heat treatments and surface coatings, and prepared detailed drawings suitable for competitive bid and procurement.

One-Inch Long Aircraft Bolt

No documentation was available. We determined the bolt material to be A286 and the washer to be Inconel 718 through chemical analysis of drillings and matched to corresponding AMS specifications, the threads to be rolled vs. cut and the presence of an aluminum coating through metallurgical evaluation, and the thread shape to be UNJF (controlled root radius) through dimensional inspection, including multiple inspections to establish required tolerances. We prepared the below drawing suitable for competitive bid and procurement.

THE NEW ERA OF SUV CAR-AUDI R8

its been a pleasure to share with you guys the details of audi r8 ......
its one of my top level car well designed with class , design, comfort,and with luxury....
it has a 4.2lit v8 engine..


         in this series too my favourite one in R8 SPYDER4.2FSI QUATTRO.....
FUNCTIONS:-5.2lit fsi engine,,produce a power output of metric horsepower(386kw;518bhp) and generate 530 newton meters of torque.................
it can cover the 0-100kilometers per hour just in only 3.9 seconds ...it can acheive a top speed of 317kilometer per hour..
other changes to the v10 version of the r8 include some asthetic differences.such as:LED HEADLIGHTS(A WORLD FIRST),interior enhancements such as  bang and olufsen465 watt sound system......its quality been really outstanding....and has a more aggressive body styling......

The R8 V10 Coupé

Iran to 'reverse engineer' US drone

Iran claimed that it had begun exploiting a US drone equipped with the latest radar evading technology on Monday as officials warned that the downed machine could be shared with America's rivals.

The aircraft was shown beneath an Iranian flag, apparently intact after crashing 140 miles inside the country last Sunda Photo: AFP

By Damien McElroy, Foreign Affairs Correspondent

3:37PM GMT 12 Dec 2011

Parviz Sorouri, an MP on parliament's foreign policy committee, said that Iranian experts were in the final stages of recovering the data from the surveillance drone, which was captured on Iranian territory last week.

Tehran has paraded the loss of the drone as a blow to the US and claimed it plans to reproduce the technology. It said its security forces had shot the drone down using previously secret air defence systems.

The drone, which is made from the latest 'stealth' technology, has been presented as a valuable windfall for its defence scientists.

"Our next action will be to reverse-engineer the aircraft," Mr Sorouri said. "In the near future, we will be able to mass produce it. Iranian engineers will soon build an aircraft superior to the American (drone) using reverse engineering."

Other Iranian officials have hinted that it could allow American rivals such as China the opportunity to acquire the technology. American officials used diplomatic pressure to recover similar technology on helicopter that crashed in Pakistan during the raid to kill Osama bin Laden, the al-Qaeda leader.

RELATED ARTICLES

• Iran refuses to hand back captured US surveillance drone 
  11 Dec 2011
• Iran shows off captured US drone 
  08 Dec 2011

Washington has acknowledged the loss of the drone but said that it crashed after it lost contact with its controllers while operating over Afghanistan.

The RQ-170 Sentinel drone is one of the most advanced used by the US military and is equipped with technology also used on the US Airforce fleet of advanced fighter jets, the F-22 and F-35.

While some US experts have cast doubt on the authenticity of a model of the drone shown on US television, others have said its electronics would be a valuable prize for rival states.

Peter Singer, of the Brookings Institution think tank, told a US newspaper that the drone would make a technological leap easier. He said: "Bottom line, it's never easy to reverse-engineer anything, let alone something like a radar, but having a working or even damaged system in hand to study up-close makes it a heck of a lot easier to both defend against it in the future or build your own derivative."

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Electro Chromatic Auto Dimming Mirror | Opto Electronic Sensor Uses In Glare Free Rear View Mirror And Side View Mirror | Smart Glass With SPD Technology

Electro-chromatic mirrors system:

Electro chromatic mirrors / Auto dimming mirrors use a combination of opto electronic sensors and complex electronics (sensors, circuit boards, micro-controllers, etc.) that constantly monitor ambient light and the intensity of light shining directly on the mirror. As soon as sensors detect glare, the electro chromatic surface of the mirror becomes darker to protect driver’s eyes and their concentration.

The electro chromatic technology usually is applied to the inside rearview mirror / Side view mirror, where it basically saves you the trouble of flipping the mirror manually if blinded by the light which increases driving safety.

Working operation of Electro chromatic mirrors:

This auto dimming rearview mirror is installed on higher end vehicles. It consists of two lenses that sandwich an electro chromic (electronic color changing) gel. The inside sides of the lenses are coated with a transparent conductive layer coating and the deepest lens has a reflective coating.

This gel, when charged with electricity darkens, then clear once the glare is no longer detected. The mirror uses a forward sensor which measures the outside ambient light, and a rearward sensor to look for glare. When dark enough, it sends current to the electrostatic gel, darkening it a rate which is related to the level of ambient darkness and rearward glare. When the outside ambient light increases, the current decreases, until the gel is clear again at daylight light levels.

Electro chromatic auto dimming rear view mirror

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Mechanical Engineering Multiple Choice Questions | Mechanical Objective Questions And Answers Pdf

1. Pick up the wrong statement? A refrigent should have

a. Low specific heat of liquid

b. High boiling point

c. High latent heat of vaporization

d. Higher critical temperature

e. Low specific volume of vapour

Answer:

High boiling point

---

2. The property of a material which enable it to resist fracture due to high impact loads is known as

a. Elasticity

b. Endurance

c. Strength

d. Toughness

e. Resilience

Answer:

Toughness

---

3. Spring index is

a. Ratio of coil diameter to wire diameter

b. Load required to produce unit deflection

c. Its capability of storing energy

d. Indication of quality of spring

e. Nothing

Answer:

Ratio of coil diameter to wire diameter

---

4. Nodular iron has

a. High machinability

b. Low melting point

c. High tensile strength

d. Good fluidity

e. All of the above

Answer:

All of the above

---

5. Six isometric views are given below along with 3 set of orthographic views. Please correlate the orthographic views with their isometric view and write the answer in the box given below with a-f.

Answer:

D, A, B

---

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