Showing posts with label Articles. Show all posts
Showing posts with label Articles. Show all posts

Specializations offered in Mechanical Engineering

What are the specializations offered in mechanical engineering? Every engineering degree comes with a variety of areas of specialization. Students in their last year of study (i.e. after 6th semester), have to opt certain optional subjects based on their area of interest. These subjects build the baseline for specialization area. Not all engineering degrees offer detailed technical education about each and every aspect of related technology. Only basic courses related to all areas of specializations are taught to mechanical engineers so that they get a basic understanding of all subjects.

Talking specifically about areas of specialization in mechanical engineering, let us first understand what mechanical engineering students are taught during four years of undergraduate degree program. It all starts from some basic courses of physics and mathematics. After you graduate with a degree in mechanical engineering, you just have a basic understanding and information about so many subjects that will be enough for you to prosper in any specialized field of work related to mechanical engineering.

Fluid Mechanics or Hydraulics: Mechanical engineers who find themselves interested in fluids and hydraulics, opt for specialization in fluid mechanics or hydraulics. This specialization course enables mechanical engineers to work in industries like dams, irrigation, agriculture and hydraulics.
 
Materials Engineering: Materials play a vital role in product development and innovation. New composite materials are being developed as per requirement of products. A basic degree in mechanical engineering combined with specialization in materials engineering gives an edge to those engineers who find themselves inclined towards production, research and manufacturing.
 
Nanotechnology: Nanomaterials are the next big thing. They are being used in every sector from health industry to robotics etc. This is little advanced specialization than materials engineering.
 
Biomedical Engineering: Biomedical engineering (BME) is the study of engineering principles and design procedures to medicine and biology for healthcare purposes (e.g. diagnostic or therapeutic).
 
Heat Transfer, Thermodynamics, and Energy Systems: In this area of specialization, principles of thermodynamics, and heat transfer (conduction, convection, and radiation) are taught in detail. Thermodynamics, heat transfer and fluid mechanics are closely related to each other.
 
Automobiles: Mechanical engineers who specialize in automobiles after basic degree in mechanical engineering are taught subjects related to IC Engines, heat transfer, fluid mechanics, power generation, Electric motors, automobile design, Engines etc.
 
Robotics, Automation & Control: As the name is very obvious, students inclined towards robots opt for subjects related to robotics, automation and control. This is a specialized field of mechanical engineering which requires knowledge and understanding of computer languages as well as basic electronics.
 
Transportation Systems: Courses in transportation systems enable mechanical engineers in understanding modern systems introduced in bullet trains, metro trains, aviation, airplanes etc.
 
Engineering Design: Mechanical engineers with specialization in engineering design are required in industries which required designing new products at large scale. This includes consultants, design firms, and contractors etc.
 
HVAC: Heat, Ventilation and Air Conditioning (HVAC) deals with installation of large scale air conditioning in multi-story buildings, factories, mines etc.
 
Oil and Gas: Oil and gas sector deals with exploration of oil and gas fields etc. This is highly paid specialization in mechanical engineering due to onsite tough nature of the job. Specialization in oil and gas after degree in mechanical engineering is quite rewarding these days.
 
Nuclear Energy: Mechanical engineers who are employed by nuclear sector are sent on training and educational programs with specialization in nuclear energy.
 
Marine Engineering: Some mechanical engineers opt to study marine engineering after basic degree in mechanical engineering.
 
Learn more about courses taught in mechanical engineering and basic concepts of mechanical engineering to understand things in detail.

Job Description of a Mechanical Engineer

What is job description of a mechanical engineer? What are job responsibilities, day to day tasks, duties and responsibilities of a mechanical engineer? A job description (JD) is a formal document containing brief information about mechanical engineer’s responsibilities.

Job description of mechanical engineers vary from industry to industry. For example, JD of a mechanical engineer working in automobile sector will be completely different from an engineer working in energy sector. In this era of automation, mechanical engineers play a pivotal role in growth of a company specially related to manufacturing. Typical job description of a mechanical engineer includes:
  • Design and manufacturing of new products.
  • Supervision of team of technicians.
  • Adherence to mechanical engineering standards, health and safety standards etc. Compliance of government regulations.
  • Writing training manuals, technical reports, handbooks and bulletins for products or engineering operations to help other team members understand the basics.
  • Preparation of feasibility reports for new projects and products based on historical data etc.
  • Assessing project requirements or operational requirements for setting up new projects or expansion of current operations.
  • Measuring performance of mechanical components, processes and products. Keeping log of all observations and necessary maintenance requirements.
  • Calculation of budgeting, estimates, forecasts, financial calculations, projections, sales forecasts, return on investments, payback periods etc.
  • Using CAD software and techniques for design improvements.
  • Planning procurement of different components of a project.
  • Testing, evaluating and modification of products.
  • A mechanical engineer should be well versed in project management tools including MS Project, primavera etc.
  • To perform scheduled maintenance of mechanical products, machinery and equipment
  • Keeping record and maintaining log of all mechanical instruments in use
  • Extracting useful information from large data sets related to different products based on feedback or consumption history of customers
This job description for a mechanical engineer is very generic in nature. Modifications can be done accordingly as per requirements. Key skills required for mechanical engineers along with above mentioned job description are:
  • Technical report writing skills
  • Presentation skills
  • Problem solving skills
  • Creativity and innovation
  • Interpersonal skills
  • Verbal and written communication skills
  • Knowledge of current and latest practices in mechanical engineering industry
  • Information about computer aided design and manufacturing
  • Planning and design skills
  • Project management skills
I hope this job description of mechanical engineers gives you an idea about responsibilities, day to day tasks and duties of mechanical engineer. Learn more about basic concepts of mechanical engineering before you start applying for mechanical engineering degree.

Types of Jobs for Mechanical Engineers

What type of jobs are offered to mechanical engineers and what are career options for them? – One of the most commonly asked question from prospective mechanical engineering students. I have seen students worrying about career choices after graduation in mechanical engineering. Unfortunately, education system in most of the countries is run so badly that students are not given any guideline for selection of subjects and career field at school or college level. Almost all parents want their children to be doctors or engineers without knowing that what will be career prospects after getting into a particular field of engineering

Let’s talk about types of jobs for mechanical engineers. Mechanical engineering is as vast a field of engineering as this universe itself. When students ask me “what types of jobs mechanical engineers do after graduation?”. I usually reply with a counter question that “what type of job they cannot do?”. I have seen mechanical engineers working in all departments including security agencies, forensic departments, irrigation departments, energy departments, manufacturing sector, telecom sector, automobile sector, livestock, medical, pharmaceutical, industrial, space research, nuclear programs, waste management, legal, railways, transportation sector, chemical sector and even management sector. There is no field where mechanical engineers have not outshined through their performance, extra ordinary arithmetic and logical skills, and management practices.

Now the question arises, how a mechanical engineer is beneficial to forensic/ security agencies? I have a friend working in forensic agencies as a forensic engineer with basic degree in mechanical engineering. Mechanical engineering is 50% physics. At forensic departments, they need mechanical engineers to investigate cases and to identify damages done to vehicles, injuries caused by arms and tools keeping in mind basic action and reaction rules of physics. In security agencies, they need mechanical engineers to investigate industrial matters, to operate and maintain fleets of modern security vehicles, to develop new security tools and firearms, to develop modern micro level robots to investigate crime scenes and to get secret reports from areas occupied by militant forces.

Law firms require services of mechanical engineers to investigate all cases related to engineering sector. They hire freelance mechanical engineers for this purpose. Mechanical engineers are hired as consultants to work with legal and law firms. A law graduate cannot understand the complexities of an engineering case without help from a mechanical engineer. After discussing all these odd jobs for mechanical engineers, do I need to say more about types of jobs for mechanical engineers?

In short, there is no department where mechanical engineers cannot serve. Even I know few mechanical engineers working in spy agencies. Really? Do you believe this? Yes they do need mechanical engineers to keep an eye on what is happening in leading engineering sectors of other countries. Once you have decided to opt for mechanical engineering, they will teach you all the general courses of mechanical engineering without being specific to any field. Specializations are done only after graduation in Bachelors of mechanical engineering.

If you have any other question in mind, don’t hesitate to contact me.

World’s Largest Giant Trailer

Only Mechanical Engineers dare to make and lift heavy weights using World’s Largest Giant Trailer. Untiring efforts of engineers at Mammoet have made it possible to convert this dream of a giant trailer into reality.

Mammoet is world’s largest service provider with specialization in lifting and transporting heavy weights. Basically the idea is to develop a heavy transport solution called Trailer Power Assist (TPA). These trailers will be powered hydraulically thus lifting large and heavy equipment will not require combining several trucks.

Traditionally, you might have seen that (multiple trailers) four or five trailers are used to transport heavy cargo. Two or four trucks are used at front to steer the movement and two or four trucks are used at back for support to the cargo/ heavy equipment. The trucks are mechanical connected with limited maneuverability.

The new TPA-system has been initiated by Mammoet and developed in cooperation with SCHEUERLE, the leading manufacturer of heavy transport vehicles. TPA is based on the SCHEUERLE K25 trailer, which is fitted with a Power Pack Unit (PPU) that hydraulically powers 4 of the 6 axle lines. The PPU is mounted at one or either end of the trailer, depending on the configuration – or can be placed on the prime mover to replace the counterweight for traction. Each PPU is powered by a MTU V12 diesel engine, compliant with all emission requirements, that generates 1,000 horsepower and a traction power of over 40 tons. The TPA system is specified for all weather extremes. 

One TPA is equivalent to two trucks. Using this technology, only one truck will be required at the front to pull and steer the equipment. This means that only one experienced driver/ operator will be incharge here thus it will reduce any damages caused by communication gaps between several drivers of other trucks combined to move same cargo. 


TPA does not only provide more lifting capacity, but it also enhances speed of the vehicle. SCHEUERLE (Truck Manufacturing Company) is currently building two prototypes of TPA in a joint venture (JV) with Mammoet. In 2016, these two prototypes will be field-tested by Mammoet.

World’s Largest Waste to Energy Plant

World’s Largest Waste to Energy Plant will be built in Shenzhen, China. Design for waste to energy plant has been approved and two Danish architectural firms have won the competition to construct this modern facility for WTE plant. This will be a mega structure which will be used to generate energy/ electricity from waste treatment.

Total current population of Shenzhen city is estimated to be 20 Million. This proposed plant will have the capacity to incinerate one third of the total waste produced per day in the city. 5,000 tons of municipal waste will be burnt in this incineration plant on daily basis. Very first target of the construction company for this project is to build a safe and secure modern infrastructure and technical facility to deal with daily waste collected from the city. 

The building will not only produce energy from waste, but energy required for running the incinerators will also be generated from photovoltaic cells/ solar panels installed at circular roof of the building. For better aesthetics, landscape will be developed around the plant. This building will be constructed on modern techniques so that the plant offers best quality/ health standards for employees working there.

It is expected that the waste to energy plant will be completed till 2020 and it will be operational during same year. The plant does not only aim at producing energy from waste but engineers are of the view that an elevated walkway will be built inside building for education purpose of the visitors.
This is the real innovation that we always talk about. Rapid increase in population all over the world requires us to take such initiatives at city and country levels for treatment of waste for a useful purpose. Just like China, it is time for leaders and investors from other countries to start such projects of waste to energy because this project serves dual purpose:
  1. It acts as a waste treatment plant
  2. Energy is generated during treatment
I would like to recommend mechanical engineering students to take this project as a final year project idea at a small scale in their college/ university. Students can build smaller models of controlled incineration for generating energy/ hot water/ steam from water using incineration of waste.

Latest Technology in 3D Printing

Every engineer is passionate to learn about latest technology in 3D printing. There are many engineers and scientists out there who are working on new ideas for improved results from 3D printing in all sectors of life. Fast developments and innovations have been observed in 3D printing technology over past few years. With introduction of modern materials in the field of 3D printing, it has become even more interesting for us all. In short, 3D printing has revolutionized the world of design, medicine, construction, robotics and manufacturing.

In this article, I would like to share with you few latest developments and technology in 3D printing sector:

Speed Printing: Previously the technology used in 3D printing was a layer-by-layer strategy (hence the word “additive.”). This was very time consuming and it had some serious disadvantages like waste of time and material, reduction in objects’ ultimate strength and so on. But those days of layer by layer manufacturing are now gone. Engineers have now introduced “Continuous Liquid Interface Production” in 3D printing. This production strategy uses molten metal to build products from 3D printing. This technology is 25 to 100 times faster than normal layer-by-layer printers.

The Printing Welder: The size of most 3D manufactured objects is controlled by the size of the 3D printer using which those objects were printed. Engineers have now invented their own method. “The innovation is a robotic arm with a print head that extrudes metal strong enough to support structure”. This innovation in 3D printers has enabled engineers to develop large size products like furniture and even bridges using 3D printers.

Phone Printer: As the name suggests, Jeng-Ywan Jeng, a professor of mechanical engineering and the dean of the engineering department at the National Taiwan University of Science and Technology is now working on this idea to use mobile phones as 3D printers. The idea is to scan an image/ drawing in mobile and then tiny printer installed with mobile device will use light from cell phone to print 3D models in no time.

3D Printing in Space Technology: Now 3D printers have enabled space agencies to build, test and rebuild space rockets and other products at space stations.

Biomedicine: It is believed that 3D printing will alter the entire face of biomedicine and human parts manufacturing. Even 3D printers have been used to help paralyzed people walk. Is there anything more awesome than this?

Going Cheap: It is believed that mobiles will be used for 3D printing just as they are being used for texting. At the same speed as well!

3D printing is the latest technique in engineering so I recommend all mechanical engineers to work on such ideas and take up project ideas related to 3D printing in their final year projects. Even a little contribution will lead to huge benefits in future because it is said “Be ashamed to die until you have won some victory for humanity.”

Engineers Developing Drones to Hunt Drones

Engineers are developing drones that will be capable of catching other drones. Drones have proved to be very useful tool in this modern era. Their useful impact in the field of security, surveillance, media coverage, war zones, fire zones and weather conditions has brought a revolution in the way how things work. Everyday engineers are working on new ideas to use drones for constructive purpose instead of destruction and war. Rising interest in drones is bringing new ideas to reality.
 
No denying to the awesomeness of drone technology but what happens when drones are in wrong hands? Engineers are now working on this idea to design and manufacture a drone for security agencies of the world which will be designed to forcefully take off any flying machines that pose a threat to high security buildings like military bases, airports, government buildings or sporting events.
 
Net being used to catch drones.
The system installed inside this anti drone device will use modern techniques to reverse engineer the system of a drone under observation. It will take just few minutes to take full control of the drone. There will be another function if the drone could not hack into system of another drone. This anti drone device will shoot a net on other drone to catch it and fly it to a safe place.
 
UAVs are remote-controlled, pilot-less aircraft. They are designed to look like jets, airplanes and missiles or spiders with several helicopter-like rotor blades. Drones can be small enough to fit in the palm of your hand or as long as a 43-foot yacht. The machines can cost from as little as $30 for toys to as much as hundreds of thousands for professional-grade versions.
 
Use of private drones is a big threat to security agencies all over the world. Although it is identifiable, but sometimes it is not easy to find who is flying a drone in a crowd. It can be used for spying by any terrorist organization. Government security agencies are working on devising systems to control such unmanned devices. So far only way to stop or catch a drone is to identify the man who is flying it. This is not safe at all.
 
I spoke to a law enforcement agency’s representative in California this week and she informed that Government is planning to construct specialized control rooms in all major cities which will act as anti drone control rooms. Any drones or unmanned flying machines that will pose security threats will be controlled through this high tech infrastructure and brought to the security agency for further investigation. Licenses will also be issued for registration of flying machines.

Why there are less jobs for engineers?

Why there are less jobs for engineers?
Why there are less jobs for engineers? This is the question which most of the students are asking me these days. Although I have written certain article on this topic, still I would like to discuss the topic in more detail. My recent article was about why engineers are not getting job offers?

A survey was conducted on facebook fan page in order to get a broader view of perspective of mechanical engineers. Following question was asked:

Guys what do you think why there are less jobs for ENGINEERS? Who is responsible? Education system, industry or students?

Very interesting response was received from some mechanical engineers. So instead of giving my point of view on this topic, I would like to share their views on this.

Pankaj Koshta: Education system is responsible for it. In maximum colleges, practical knowledge is not given to students to motivate them about the field.

Sathish: We can’t teach the cutting edge tech to students in colleges. We should give maximum information (applications) about latest software and what you have to do. Internship and training must be there in their four year curriculum.

Collin E Enyi: Lack of Practical Training in a Workshop., Most Schools don't have Functional Machines, (Lathe, Drilling, Boring etc). Theory alone is not helping matter.
Mahmoud Hamdan: Actually there is a training in universities but unfortunately portion of the students are not active during that training

Md Azad: Education system is the main culprit otherwise top class students opt for engineering. Half educated boring teachers. They don't even know the spelling of passion and enthusiasm (they don't motivate). Number of private colleges doesn’t have good infrastructure and labs. Even if any engineer gets a job, they are forced to do the work for 12 hours instead of 8 hours.

Co Joshua: Economy is responsible for less jobs for engineer. It's like a cycle. Since the rate of income in our economy is low due to corruption, professionals are forced to go abroad seeking opportunities. Instead of working in their own country, they take their attention to other countries with high salary offers, thereby the economy would decrease the reserve on tax. A phenomenon known as "Brain drain".

Hisham Miind: Lesser vacancies & more engineers availability. There should be balance, and engineers should not settle for less than they deserve. Because of lesser jobs, industries are getting benefit because of giving low wages to engineers, as they can get many if one ends the job because of less salary. All are responsible and government should seriously solve this big problem of unemployment.

Jiaul Faisal: Poor educational system, colleges should create Engineers instead of producing engineers.

Nitin Gurjar: Student are responsible. Because after completing engineering, an engineer generally stands only to get a job but he never try to. Make some new thing so that number of jobs are increased.

Sundar San: Why students wants job rather than creating a job?

Aurel S. Cani: Education system which does not cooperates with industry. So we can learn and can be ready for every job. Without practice we are nothing.

Dean Preston: Lots of jobs for engineers!! More than most career paths just not as many for graduates with no experience. I don't know a single engineer who has been out of work longer than a few months.

Lokesh Tak: Every one want to be an engineer and want good job in MNC, they take only-only one option, but in this world there many options, just like- writer, lawyer, painter, musician, singer, agro industrialist, defense and many more. We need to change our view. 

Vivek Gupta: Well there are many reasons for less jobs for engineers.
1. Jobs in industry especially in India are mainly for diploma holders. Each and every thing in the small or medium level industry requires just diploma to control and coordinate the shop floor work.
2. The increasing number of B.tech students are compelled to do the jobs which earlier diploma students were used to. This leads to underemployment and thus the B.tech ones leave the job leading to unemployment.
3. Lack of industry and academic collaboration due to which most of the engineering students fail to meet the expectation of the industry.
4. Lack of research and development in our country. We only use labor not brain. India can give jobs to laborers but not to engineers.
5. Increasing population in engineering and compared to this jobs are fixed.
6. Lack of applied knowledge among students. Engineering is now just theoretical.

Kumar Mani: Don’t know whom to blame. Corrupt education system that stands for business only. Take money - let the student study books at his own and give degree after they clear all papers? After four years I am compelled to ask myself: Am I an engineer? Or just a book worm who struggled only for a degree?

Jamal Jamal: In fact many are responsible for fewer job opportunities for engineers. 1- Government 2- industry 3- education 4- bad recommendation.

How drones can be used for firefighting?

Drones for fire control
How drones can be used for firefighting? Is it possible to get a drone to some real life saving work? Professors at Olin College and MIT are studying how to use drones in field for fighting fires. Professors are of the view that they can develop a fleet of self flying intelligent drones programmed to gather intelligence reports/ insights from fire field that will help firefighters in devising a more powerful strategy in battling out of control blazes. Not only this information will help in fire control but it will also help the firefighters in knowing more about the wildfires. Previously we discussed how mechanical engineers are working on a project idea of designing a robot for firefighting.

Andrew Bennett, who is a mechanical engineering professor at Olin College in Needham, and his partner, MIT professor Jonathan How, hope to have the drone system ready for demonstrations this spring. They are hopeful that first prototype of the intelligent drones will be ready for flight before spring. After successful flight tests of the drone, intelligent functions like tracking fire and critical heat zones will be tested using tractors and artificial fire flames in open grounds.

“Fail early, try often” should be the motto for all mechanical engineers working on such projects.

How will this drone work?, is the question here. In very simple words, this drone will allow firefighters to point out a fire zone/ most critical zone on a map using GPS coordinates. Comprehensive fire examination report containing heat level information will also be supplied by the drone. The drone will be intelligent enough to examine fire from safe distance and along the edges. It will also be capable of calling another drone for backup when battery runs low.

Firefighting is not fun. It requires lot of courage, knowledge and expertise. Knowing that how fire burns and where it might move next is the most important part of firefighting, said Chief Fire Warden David Celino of the state’s Department of Conservation and Recreation. Forecasting and knowing the behavior of fire is really exciting.

“No matter how futuristic the technology is, you still go back to the fundamentals of firefighting: Success in trying to get containment or control over a fire is all about gathering the size-up information — the intelligence about what’s going on with the fire,” he said.

Being a mechanical engineer, I am excited to know more about the future of both these projects. i.e. robots and drones as firefighters. If you have found this idea wonderful, share it with your friends on facebook to acknowledge the efforts of mechanical engineers.

Robot as a firefighter

Robot as a firefighter
Respect for the engineers who are working on a robot that will work as firefighter. Firefighting is a tough job. It requires lots of courage and involves risk. Firefighters have to take care of all health and safety measures to ensure minimal casualties. Both courage and sense are required for firefighting job. Soon the world will see walking giant robots working as firefighters in emergency situations. Now this is real imagination of an engineer. For now the technology is being tested at sea.

How it works?

“The concept is to design a humanoid robot. We developed a whole body controller for balance and to respond to external disturbance” – says Brian Lattimer, a professor in the department of mechanical engineering at Virginia Tech and a member of the team.

The body controller was itself a blend of redesigned actuators used for robots and software that is used for locomotion, he says. “It will not be inflexible like some other humanoid robots you might have seen. The actuators contain springs, permitting it to control its balance more easily.” The whole body controller compensates for any kick from the fire hose.
Robot as a firefighter
THOR-OP reaching for a fire nozzle. Image: Virginia Tech

The robot will be designed to be able to keep its range-finding and perception during a fire event. “When you deposit water into fire you must have the capability to see through steam and smoke,” he says. “It was desirable to have a robot autonomously locate fires and put them out with water.” They looked at range finders on the market and put them in different levels of fire and smoke to see how they behaved.” Ultimately, LIDAR was chosen.

Testing it on the former USS Shadwell, the robot walked into a compartment containing fire and worked with a firefighter to grab a hand line. The situation was suppressed successfully. At present, they have developed two humanoid robots, both 5 foot 10 and weighing 145 lbs and 165 lbs, respectively.

This serves as a great idea for students of mechanical engineering. I suggest all students to work on this project idea. This is a great idea for final year project for mechanical engineers. Whenever you are deciding a topic for project, always remember to do something which has not been done already. I have seen many students working on same stupid repetitive ideas each year with no output/ learning at all. The idea of a robot as a firefighter is just awesome. Sense the smoke, find heat zone and push water.

Why mechanical engineering is better

Why a degree in mechanical engineering is a better choice for students? Why do we rank mechanical engineering degree at higher merits/ ranks in almost all universities and colleges of the world? Over the past few decades, mechanical engineering degree has raised its value and demand among aspirants and no decline has yet been seen in reputation and scope of mechanical engineering degree. That is why it is often said to be an ever green field.

Mechanical engineering is a diverse field of engineering. This diversity allows mechanical engineers to pursue a career in any field of life. So it gives you a wide variety of choice after graduation. There are many students who wish to change their field of work after they graduate. So if you are a mechanical engineer, you will find it easy to plunge yourself into a completely new field. Either you want to be a project manager or a technical consultant, being a mechanical engineer you can survive in any field.

When students get admission in any engineering degree, mostly all of them are unaware of their future. They do not have a clear picture of what they will do after graduation. Almost 90% of them end up with a totally different career path after graduation. Some students tend to incline more towards other fields of engineering. It happens with everyone. Happened with me as well. I am a graduate in mechanical engineering but I started working in waste management field. That was totally different environment. But I found it very interesting field. I worked on projects for producing energy from waste. Today I am working in livestock field. Here I am exploring a completely different environment. The more you work in variety of areas, more you learn about opportunities in that field.

I know many mechanical engineers who are doing awesome jobs as environmentalists because they did masters in environmental engineering after bachelors in mechanical. This is why I said mechanical engineering is diverse in its scope, Even if you don’t like to be a mechanical engineer at work, you can change your path easily. You can pursue higher education in civil engineering, environmental engineering, computer science, software engineering, quality control, project management or even supply chain management. Swapping field of work is not difficult for mechanical engineers.

This was just a little discussion on why mechanical engineering is a better choice for students and why do we say that mechanical engineering is the best field of engineering. Why engineers are not getting job offers, is a totally different topic.

Engineers will produce energy from airport sound

Engineers at Boeing Airlines have started working on the idea of producing energy from jet sounds produced at airports. Now engineers will transform loud and ear itching sounds of jet engines to electricity. Since the start of commercial flights, engineers are looking for ways to reduce loud noise produced by commercial jets during taking off or landing. Now engineers working at Boeing have come up with this idea that this sound energy ca used as a source of electricity at airports.

Boeing Employee Chin Toh surprised everyone with a new proposal: how about producing electricity from airport acoustical energy? Chin toh is of the view that there is no system for productive use of this sound energy/ acoustical energy. It just dissipates during landing/ tale off. This only represents a lost energy resource. Toh’s idea is that this sound energy will be captures and transformed into electrical energy to power up airports or any of its function.

The propositions are significant in terms of funds and logistics. Runways would be given a renovation and their borders would be lined with "acoustic wave collectors." These devices grab and gather the vibrations produced by a plane engine's noise. The acoustic energy is then converted into air flow, which in turn runs a turbine. A generator coupled to the turbine's rotating shaft generates electricity, which is sent to a substation and distributed to where it is needed.

A few years back, an research at the Amsterdam Airport Schiphol proved that runway uproar can be subdued using basic acoustics. For now, only the major airports are resourceful enough to use advanced noise-breaking mechanisms. The popularity of sound collectors may increase if the technology makes the implementation profitable.

Toh's patent might have to wait until the technology for gathering energy from sound waves improves. Until then, noise remains an example of unused resources that are just next to us, waiting to be harnessed.
Such ideas serve as a great source of inspiration for young engineers. This is a true representation of “necessity is the mother of invention”. Sound can be a great source of mechanical energy.

Airbus will launch fastest supersonic jet

Airbus will launch fastest supersonic jet within a year which will be capable of flying at a speed of four times the speed of sound. Airbus has won a patent for a supersonic fastest jet of the world according to the U.S. Patent and Trademark Office.
Fastest supersonic jet

Previously fastest commercial jet of the world is Concorde but this new air vehicle will be twice as fast as Concorde. The Concorde, manufactured by a company now acquired by Airbus, was capable of flying at about 1,300 mph (2,100 km/h), or twice the speed of sound. This new invention by airbus will beat the speed of Concorde with introduction of new turbojets and hydrogen powered systems.
This hypersonic jet will require at least one year before final manufacturing of a model aircraft with this much speed. In my personal opinion, successful launch of this aircraft will be a great milestone for mechanical engineers and aerospace engineers of the world. This fastest supersonic jet launched by airbus will enhance efficiency of transportation and will serve as a start of a new chapter in aerospace engineering.

According to Airbus officials, this hypersonic jet will be able to serve both civilian and military purposes. In civilian or commercial application, this supersonic craft will be able to accommodate 20 passengers. While for military, this jet can be used to transport military equipment for commandos just like that of SR71 Blackbird.

According to Airbus, plane’s aerodynamics are designed in such a way that it will reduce sonic boom when it gains supersonic speed. This was the greatest problem in Concorde. Several complaints about sonic boom and noise pollution created by Concorde were received due to which it was prevented from operating over land.

World’s fastest charging electric bus

Zhuzhou Electric Locomotive in China proudly announces world’s fastest charging bus. The bus is on it’s route after successful inauguration in china. According to transport department officials in China, this electric rechargeable public bus — which was manufactured by Zhuzhou Electric Locomotive in eastern Chinese port city of Ningbo and runs along a 24-stop, 11 kilometer route — requires only 10 seconds for recharging and be ready again for its journey.
World's fastest rechargable electric busIn an interview during launch of the raid rechargeable public bus, Zhou Qinghe, president of Zhuzhou Electric Locomotive, stated that once full charged, this bus is capable of traveling 5 kilometers distance. It means this bus will require 3 recharges on a route of 11 kilometer. As the duration of recharging is just 10 seconds so no passenger will be annoyed at this.

Not only that it is capable of rapid recharging, the bus is also designed keeping in mind the more efficient use of its energy. The bus can recycle over 80% of potential energy for storage and later on usage, during braking or negotiating slopes. Super-capacitor technology has been introduced in this bus. The supercapacitors of this bus are designed and manufactured from a cutting-edge carbon material that is capable of working in all possible temperatures (from -40 degrees to 60 degrees Celsius). These supercapacitors have a life span of 12 years. During this time they can endure several recharging again and again over time.
World's fastest rechargable electric bus

When compared to a standard diesel bus, this rapidly rechargeable public electric bus consumes just one tenth of the energy as consumed by a diesel bus. In other words, it means fuel savings of as much as $200,000 over the full lifetime of the vehicle.

Zhuzhou Electric Locomotive in China now plans to manufacture and launch 1200 more rechargeable electric buses to its fleet in next 3 years. Being a mechanical engineer, I highly appreciate this advancement of Chinese engineers in public transport industry. These buses do not only mean fuel efficiency but also they are environment friendly. Young engineers should come up with more ideas in this field to unleash the true potential of industry. This world’s fastest charging electric bus is another great achievement of this decade.
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