With the federal government pulling out of manned space flight, it gave private companies ample opportunity to fill in the gaps.  Of course, these companies MUST have adequate funding, trained personnel and proper facilities to launch their version(s) of equipment, support and otherwise that will take man and equipment to the outer reaches of space.  The list of companies was quite surprising to me.  Let’s take a look.

These are just the launch vehicles.  There is also a huge list of manufacturers making man-rovers and orbiters, research craft and tech demonstrators, propulsion manufacturers, satellite launchers, space manufacturing, space mining, space stations, space settlements, spacecraft component manufacturers and developers, and spaceliner companies.   I will not publish that list but these companies are available for discovery by putting in the heading for each category.  To think we are not involved in space is obviously a misnomer.

 

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CONCEPT CARS FOR THE FUTURE

February 9, 2019


On Thursday, Rep. Alexandria Ocasio-Cortez (D-N.Y.) and Sen. Ed Markey (D-Mass.) unveiled a landmark resolution cementing the pillars of an unprecedented program to zero out planet-warming emissions and restore the middle-class prosperity of postwar America that the original New Deal helped spur.

Just three months after calls for a Green New Deal electrified a long-stagnant debate on climate policy, the Democratic lawmakers released the six-page document outlining plans to cut global emissions forty (40) to sixty (60) percent below 2010 levels by 2030 and neutralize human-caused greenhouse gases entirely by 2050.

The joint resolution stakes out a “ten-year national mobilization” plan to build “smart” grids and rapidly increase the share of American power generated from solar and wind from ten (10) percent today to as close to one hundred (100) percent as possible over the next decade. The plan reframes tired talk of repairing the nation’s crumbling bridges, highways and ports as a crisis in a new era of billion-dollar storms. It gets local, demanding upgrades to “all existing U.S. buildings” to “achieve maximum” efficiency with energy and water use.

These are tremendously ambitious goals and quite frankly somewhat misguided.  The time line is NOT realistic.  We are, at the present time, not anywhere close to achieving those goals.  No programs in action to achieve those goals and one thing the “gentle” congresswoman misunderstands—the American love for fast cars, slow cars, electric cars, hybrid cars, etc. You surely must get my drift. Our entire economy has been built on fossil fuels.  That will continue using carbonaceous fuels until viable and cost-efficient alternatives are realized and commercially available.

The automotive industry thinks that time is down the road and they are operating with that belief. Let’s take a very quick look at what the automotive industry thinks is in store for our future “rides”.  The digital pictures below will give you some idea as to the concepts the industry is working on for future sales.

The E-Legend is an all-electric modern reinterpretation Peugeot’s 1969 -504 coupe. The automotive industry is making across-the-board moves to electric vehicles, and French manufacturer Peugeot isn’t about to be left behind. Ahead of the 2018 Paris Motor Show, Peugeot has released its E-Legend concept EV with a design that harks back to the classic 504 coupes of the 60s and 70s. In a world where aerodynamics leaves automotive design with a feeling of sameness across the industry, the E-Legend breaks from convention with a classically proportioned exterior and sharp features. The interior is nearly a modern masterpiece, with seats that could be at home in a modern office and a rectangular steering wheel. Peugeot claims 456 horsepower and 590 lb-ft of torque from the electric powertrain and a range of 373 miles, putting it right in line with current EV offerings. With its good looks and solid specs, the E-Legend is begging to see production.

Mercedes has unveiled the Vision EQ Silver Arrows Concept, and it is a stunner. The concept is a feast for the senses, a product of Mercedes’ masterful use of its own heritage and reinventing it with a futuristic electric-jolted twist. As it is, the EQ Silver Arrow is a showcase concept — and what a concept, it is — that we’ll never see in production form. The good news is that the concept isn’t just a muscle-flexing design exercise, too. Parts of the concept will appear in Mercedes’ new electric brand offshoot, EQ. As to what those parts are? We’ll just have to wait and find out.

Porsche has announced that it will put the Cross Turismo into production as a variant of the upcoming Taycan EV, creating 300 new jobs at Porsche’s Zuffenhausen headquarters. The reports of the wagon’s death have been greatly exaggerated, and the Porsche Mission E Cross Turismo concept is the latest proof that the body style is alive and well. Following the path blazed by the raised ride height and plastic-clad wheel arches of its corporate cousin, the Audi A4 All-road, the Mission E Cross Turismo is an all-electric, off-road-ready wagon that’s nonetheless claimed to be capable of blasting to 60 mph in less than 3.5 seconds and to 124 mph in less than 12 seconds.That’s right, Porsche is hinting that boxer engines won’t be the only characteristic its vehicles share with Subarus, and the Mission E Cross Turismo reveals the brand is, at the very least, considering an Outback-like variant of its upcoming Mission E sedan. Presumably, such a model will accompany a lower-riding, cladding-free, and non-knobby-tired Sport Turismo wagon version of the Mission E, as well.

“In our striving for efficiency, have we lost empathy for the traveler?” These words, from Volvo’s launch video for its new 360c fully autonomous concept car, hit home with me. I fly a lot, so I’m fully familiar with efficient but unsympathetic forms of travel, and Volvo’s idea is to help people like me through the design of its future cars. The Volvo 360c is, like most concepts of our time, all-electric, fully autonomous, and covered by a big sweeping glass dome. What distinguishes it, though, is Volvo’s vision of how it fits into the broader scheme of city infrastructure, short-haul flights, working commutes, and environmental concerns.

The PB18 e-tron concept embodies a fundamentally driver-centric sports car — there are no piloted driving systems to add weight, and its relatively lightweight construction helps propel it to speeds above 186 mph. It features a large-format cockpit which is a freely programmable unit and can be switched between layouts for optimal racetrack- and road-driving. The driver’s seat and cockpit are integrated into an inner monocoque shell that can be slid laterally to accommodate for one- or two-person seating.

The all-electric I.D. Vizzion will have a production version with a steering wheel and Level 4 autonomy on board, but the concept being shown off on the Geneva floor was the one with full autonomy and no human controls. To look at the expansive opening created by the Vizzion’s vast doors and the carpeted interior and contoured seating inside, you’d be reminded of Aston Martin’s similarly grand Lagonda concept car. But where the Aston Martin is sumptuous and enticing, VW’s carpet is made out of an unpleasant synthetic material, and the entire interior feels cheaper than it looks.

There’s not much in the way of features on the inside of the I.D. Vizzion: like most concepts, it’s minimal and stripped down, with only a shelf at the front of the car for tossing your sunglasses onto. There are wireless charging pods for phones, which are increasingly becoming a standard feature even in current production models.

CONCLUSION:

As you can see, the automobile industry is planning on a long and continued future although all-electric and autonomous vehicles are definitely in the future.  Please let me have your comments. See if you and I agree at all.

BENDABLE BATTERIES

February 1, 2019


I always marvel at the pace of technology and how that technology fills a definite need for products only dreamt of previously.   We all have heard that “necessity is the mother of invention” well, I believe that to a tee.  We need it, we can’t find it, no one makes it, let’s invent it.  This is the way adults solve problems.  Every week technology improves our lives giving us labor-saving devices that “tomorrow” will become commonplace.  All electro-mechanical devices run on amperage provided by voltage impressed.   Many of these devices use battery power for portability.   Lithium-ion batteries seem to be the batteries of choice right now due to their ability to hold a charge and their ability to fast-charge.

Pioneer work with the lithium battery began in 1912 under G.N. Lewis but it was not until the early 1970s when the first non-rechargeable lithium batteries became commercially available. lithium is the lightest of all metals, has the greatest electrochemical potential and provides the largest energy density for weight.

The energy density of lithium-ion is typically twice that of the standard nickel-cadmium. This is a huge advantage recognized by engineers and scientists the world over.  There is potential for higher energy densities. The load characteristics are reasonably good and behave similarly to nickel-cadmium in terms of discharge. The high cell voltage of 3.6 volts allows battery pack designs with only one cell. Most of today’s mobile phones run on a single cell. A nickel-based pack would require three 1.2-volt cells connected in series.

Lithium-ion is a low maintenance battery, an advantage that most other chemistries cannot claim. There is no memory and no scheduled cycling is required to prolong the battery’s life. In addition, the self-discharge is less than half compared to nickel-cadmium, making lithium-ion well suited for modern fuel gauge applications. lithium-ion cells cause little harm when disposed.

If we look at advantages and disadvantages, we see the following:

Advantages

  • High energy density – potential for yet higher capacities.
  • Does not need prolonged priming when new. One regular charge is all that’s needed.
  • Relatively low self-discharge – self-discharge is less than half that of nickel-based batteries.
  • Low Maintenance – no periodic discharge is needed; there is no memory.
  • Specialty cells can provide very high current to applications such as power tools.

Limitations

  • Requires protection circuit to maintain voltage and current within safe limits.
  • Subject to aging, even if not in use – storage in a cool place at 40% charge reduces the aging effect.
  • Transportation restrictions – shipment of larger quantities may be subject to regulatory control. This restriction does not apply to personal carry-on batteries.
  • Expensive to manufacture – about 40 percent higher in cost than nickel-cadmium.
  • Not fully mature – metals and chemicals are changing on a continuing basis.

One amazing property of Li-Ion batteries is their ability to be formed.  Let’s take a look.

Researchers have just published documentation relative to a new technology that will definitely fill a need.

ULSAN NATIONAL INSTITUTE OF SCIENCE AND TECHNOLOGY:

Researchers at the Ulsan National Institute of Science and Technology in Korea have developed an imprintable and bendable lithium-ion battery they claim is the world’s first, and could hasten the introduction of flexible smart phones that leverage flexible display technology, such as Samsung’s Youm flexible OLED.

Samsung first demonstrated this display technology at CES 2013 as the next step in the evolution of mobile-device displays. The battery could also potentially be used in other flexible devices that debuted at the show, such as a wristwatch and a tablet.

Ulsan researchers had help on the technology from Professor John A. Rogers of the University of Illinois, researchers Young-Gi Lee and Gwangman Kim of Korea’s Electronics and Telecommunications Research Institute, and researcher Eunhae Gil of Kangwon National University. Rogers was also part of the team that developed a breakthrough in transient electronics, or electronics that dissolve inside the body.

The Korea JoongAng Daily newspaper first reported the story, citing the South Korea Ministry of Education, Science and Technology, which co-funded the research with the National Research Foundation of Korea.

The key to the flexible battery technology lies in nanomaterials that can be applied to any surface to create fluid-like polymer electrolytes that are solid, not liquid, according to Ulsan researchers. This is in contrast to typical device lithium-ion batteries, which use liquefied electrolytes that are put in square-shaped cases. Researchers say this also makes the flexible battery more stable and less prone to overheating.

“Conventional lithium-ion batteries that use liquefied electrolytes had problems with safety as the film that separates the electrolytes may melt under heat, in which case the positive and negative may come in contact, causing an explosion,” Lee told the Korean newspaper. “Because the new battery uses flexible but solid materials, and not liquids, it can be expected to show a much higher level of stability than conventional rechargeable batteries.”

This potential explosiveness of the materials in lithium-ion batteries — which in the past received attention because of exploding mobile devices — has been in the news again recently in the case of the Boeing 787 Dreamliner, which has had several instances of liquid leaking lithium-ion batteries. The problems have grounded Boeing’s next-generation jumbo jet until they are investigated and resolved.

This is a very short posting but one I felt would be of great interest to my readers.  New technology; i.e. cutting-edge stuff, etc. is fun to write about and possibly useful to learn.  Hope you enjoy this one.

Please send me your comments:  bobjengr@comcast.net.

COMPUTER SIMULATION

January 20, 2019


More and more engineers, systems analysist, biochemists, city planners, medical practitioners, individuals in entertainment fields are moving towards computer simulation.  Let’s take a quick look at simulation then we will discover several examples of how very powerful this technology can be.

WHAT IS COMPUTER SIMULATION?

Simulation modelling is an excellent tool for analyzing and optimizing dynamic processes. Specifically, when mathematical optimization of complex systems becomes infeasible, and when conducting experiments within real systems is too expensive, time consuming, or dangerous, simulation becomes a powerful tool. The aim of simulation is to support objective decision making by means of dynamic analysis, to enable managers to safely plan their operations, and to save costs.

A computer simulation or a computer model is a computer program that attempts to simulate an abstract model of a particular system. … Computer simulations build on and are useful adjuncts to purely mathematical models in science, technology and entertainment.

Computer simulations have become a useful part of mathematical modelling of many natural systems in physics, chemistry and biology, human systems in economics, psychology, and social science and in the process of engineering new technology, to gain insight into the operation of those systems. They are also widely used in the entertainment fields.

Traditionally, the formal modeling of systems has been possible using mathematical models, which attempts to find analytical solutions to problems enabling the prediction of behavior of the system from a set of parameters and initial conditions.  The word prediction is a very important word in the overall process. One very critical part of the predictive process is designating the parameters properly.  Not only the upper and lower specifications but parameters that define intermediate processes.

The reliability and the trust people put in computer simulations depends on the validity of the simulation model.  The degree of trust is directly related to the software itself and the reputation of the company producing the software. There will considerably more in this course regarding vendors providing software to companies wishing to simulate processes and solve complex problems.

Computer simulations find use in the study of dynamic behavior in an environment that may be difficult or dangerous to implement in real life. Say, a nuclear blast may be represented with a mathematical model that takes into consideration various elements such as velocity, heat and radioactive emissions. Additionally, one may implement changes to the equation by changing certain other variables, like the amount of fissionable material used in the blast.  Another application involves predictive efforts relative to weather systems.  Mathematics involving these determinations are significantly complex and usually involve a branch of math called “chaos theory”.

Simulations largely help in determining behaviors when individual components of a system are altered. Simulations can also be used in engineering to determine potential effects, such as that of river systems for the construction of dams.  Some companies call these behaviors “what-if” scenarios because they allow the engineer or scientist to apply differing parameters to discern cause-effect interaction.

One great advantage a computer simulation has over a mathematical model is allowing a visual representation of events and time line. You can actually see the action and chain of events with simulation and investigate the parameters for acceptance.  You can examine the limits of acceptability using simulation.   All components and assemblies have upper and lower specification limits a and must perform within those limits.

Computer simulation is the discipline of designing a model of an actual or theoretical physical system, executing the model on a digital computer, and analyzing the execution output. Simulation embodies the principle of “learning by doing” — to learn about the system we must first build a model of some sort and then operate the model. The use of simulation is an activity that is as natural as a child who role plays. Children understand the world around them by simulating (with toys and figurines) most of their interactions with other people, animals and objects. As adults, we lose some of this childlike behavior but recapture it later on through computer simulation. To understand reality and all of its complexity, we must build artificial objects and dynamically act out roles with them. Computer simulation is the electronic equivalent of this type of role playing and it serves to drive synthetic environments and virtual worlds. Within the overall task of simulation, there are three primary sub-fields: model design, model execution and model analysis.

REAL-WORLD SIMULATION:

The following examples are taken from computer screen representing real-world situations and/or problems that need solutions.  As mentioned earlier, “what-ifs” may be realized by animating the computer model providing cause-effect and responses to desired inputs. Let’s take a look.

A great host of mechanical and structural problems may be solved by using computer simulation. The example above shows how the diameter of two matching holes may be affected by applying heat to the bracket

 

The Newtonian and non-Newtonian flow of fluids, i.e. liquids and gases, has always been a subject of concern within piping systems.  Flow related to pressure and temperature may be approximated by simulation.

 

The Newtonian and non-Newtonian flow of fluids, i.e. liquids and gases, has always been a subject of concern within piping systems.  Flow related to pressure and temperature may be approximated by simulation.

Electromagnetics is an extremely complex field. The digital above strives to show how a magnetic field reacts to applied voltage.

Chemical engineers are very concerned with reaction time when chemicals are mixed.  One example might be the ignition time when an oxidizer comes in contact with fuel.

Acoustics or how sound propagates through a physical device or structure.

The transfer of heat from a colder surface to a warmer surface has always come into question. Simulation programs are extremely valuable in visualizing this transfer.

 

Equation-based modeling can be simulated showing how a structure, in this case a metal plate, can be affected when forces are applied.

In addition to computer simulation, we have AR or augmented reality and VR virtual reality.  Those subjects are fascinating but will require another post for another day.  Hope you enjoy this one.

 

 

THE MOST UNRELIABLE

November 7, 2018


One of the things I like to do with my posts is deliver information you can use in your daily life. “Stuff” that just mike make a difference.  I certainly hope this one does.    Some of the information you will read is taken from Consumer Reports Magazine and Design News Daily Magazine.

Consumer Reports recently published information regarding the reliability of automobiles offered for sale in the United States.  They drew their conclusions from owner surveys of more than five hundred thousand (500,000) people. The surveys look at numerous problem areas including engine, transmission, suspension, cooling, electrical, climate, brakes, exhaust, paint, trim, noises, leaks, power equipment, and in-car electronics, among others.  We will highlight now those automobiles considered to be the most unreliable.  This list may surprise you as it did me.

I would say that if you are looking for new wheels you heed the information given by Consumer Magazine.  They accept no advertisements and generally conduct their research by interviewing consumers and actually testing the products they report on.


I feel that most individuals, certainly most adults, wonder if anyone is out there.  Are there other planets with intelligent life and is that life humanoid or at least somewhat intelligent?  The first effort would be to define intelligent.  Don’t laugh but this does have some merit and has been considered by behavioral scientists for a significant length of time.  On Earth, human intelligence took nearly four (4) Billion years to develop. If living beings develop advanced technology, they can make their existence known to the Universe. A working definition of “intelligent” includes self-awareness, use of tools, and use of language. There are other defining traits, as follows:

  • Crude perceptive abilities: Like concept of a handshake (sending a message and acknowledging receipt of one sent by you)
  • Crude communication abilities: Some primitive language and vocabulary
  • Sentience: Should be able of original thought and motivation, some form of self -awareness
  • Retention: Ability to remember and recall information on will
  • Some form of mathematical ability like counting

Please feel free to apply your own definition to intelligence. You will probably come as close as anyone to a workable one.

TESS:

NASA is looking and one manner in which the search occurs is with the new satellite TESS.

The Transiting Exoplanet Survey Satellite (TESS) is an Explorer-class planet finder.   TESS will pick up the search for exoplanets as the Kepler Space Telescope runs out of fuel.

Kepler, which has discovered more than 4,500 potential planets and confirmed exoplanets, launched in 2009. After mechanical failure in 2013, it entered a new phase of campaigns to survey other areas of the sky for exoplanets, called the K2 mission. This enabled researchers to discover even more exoplanets, understand the evolution of stars and gain insight about supernovae and black holes.

Soon, Kepler’s mission will end, and it will be abandoned in space, orbiting the sun, therefore:  never getting closer to Earth than the moon.

The spaceborne all-sky transit survey, TESS will identify planets ranging from Earth-sized to gas giants, orbiting a wide range of stellar types and orbital distances. The principal goal of the TESS mission is to detect small planets with bright host stars in the solar neighborhood, so that detailed characterizations of the planets and their atmospheres can be performed. TESS is only one satellite used to determine if there are any “goldy-locks” planets in our solar system. TESS will survey an area four hundred (400) times larger than Kepler observed. This includes two hundred thousand (200,000) of the brightest nearby stars. Over the course of two years, the four wide-field cameras on board will stare at different sectors of the sky for days at a time.

TESS will begin by looking at the Southern Hemisphere sky for the first year and move to the Northern Hemisphere in the second year. It can accomplish this lofty goal by dividing the sky into thirteen (13) sections and looking at each one for twenty-seven (27) days before moving on to the next.

The various missions launched to discover exoplanets may be seen below.

As mentioned earlier, TESS will monitor the brightness of more than two hundred thousand (200,000) stars during a two-year mission, searching for temporary drops in brightness caused by planetary transits. Transits occur when a planet’s orbit carries it directly in front of its parent star as viewed from Earth. TESS is expected to catalog more than fifteen hundred (1,500) transiting exoplanet candidates, including a sample of approximately five hundred (500) Earth-sized and ‘Super Earth’ planets, with radii less than twice that of the Earth. TESS will detect small rock-and-ice planets orbiting a diverse range of stellar types and covering a wide span of orbital periods, including rocky worlds in the habitable zones of their host stars.  This is a major undertaking and you might suspect so joint-ventures are an absolute must.  With that being the case, the major parterners in this endeavor may be seen as follows:

The project overview is given by the next pictorial.

In summary:

TESS will tile the sky with 26 observation sectors:

  • At least 27 days staring at each 24° × 96° sector
  • Brightest 200,000 stars at 1-minute cadence
  • Full frame images with 30-minute cadence
  • Map Southern hemisphere in first year
  • Map Northern hemisphere in second year
  • Sectors overlap at ecliptic poles for sensitivity to smaller and longer period planets in JWST Continuous Viewing Zone (CVZ)

TESS observes from unique High Earth Orbit (HEO):

  • Unobstructed view for continuous light curves
  • Two 13.7-day orbits per observation sector
  • Stable 2:1 resonance with Moon’s orbit
  • Thermally stable and low-radiation

The physical hardware looks as follows:

You can’t tell much about the individual components from the digital picture above but suffice it to say that TESS is a significant improvement relative to Kepler as far as technology.  The search continues and I do not know what will happen if we ever discover ET.  Imagine the areas of life that would affect?

 

 

TEN MOST RELIABLE CARS

April 4, 2018


Conservative design principles may be the key to building a more reliable automobile, say engineers from Consumer Reports who studied vehicle reliability for their 2018 auto issue.  Nine of the ten vehicles receiving “much better than average” overall scores in every available year of the survey were either from Toyota or Lexus.  The only exception was the Acura TSX mid-sized sedan, which received a perfect score in every model year from 2010 to 2014. This probably does not surprise anyone.

Let’s take a look at what Consumer Reports considers the ten most reliable models.

CONCLUSION:

Consumer Reports’ ratings of vehicle reliability are based on survey responses from more than half a million vehicle owners. The surveys ask questions about 17 different potential trouble spots, ranging from engines and transmissions to fuel systems, electrical, suspension, brakes, body hardware, and in-car electronics, among others.

In the ratings, the Camry received “much better than average” ratings (the magazine’s highest score) for in-car electronics in four of the last eight model years on the Consumer Reports survey. It also received perfect scores in all eight years for three engine categories and two transmission categories.

Toyota’s conservative approach does have a downside, however, Fisher added. The company’s vehicles are often dinged by automotive writers for being “dowdy,” or just plain lacking in excitement, he said. “Other manufacturers are willing to take risks for the sake of a performance increase, or for fuel economy boost, or for excitement and drive-ability,” he said. “And those manufacturers continue to get accolades from their peers. However, I would argue that none of those accolades consider reliability.”

OKAY—what are you after? Bells and whistles or a reliable vehicle to get you to and from work?

 

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