Osaka based Souichi Hatakenaka graduated from university with a degree in precision engineering, but has since turned his energies to illustration, work he calls precision monochrome. There’s a career change that was, in my opinion, a good call.
Wednesday, 15 March, 2017
Tuesday, 12 April, 2016
Space elevators will make moving objects, such as satellites, components for space stations, and anything else we want to place in space, a whole lot cheaper than using rockets. They could solve a number of space travel related problems as well, but they are not without their dangers.
Sorry, did I not explain what a space elevator was? You should find this helpful then.
Monday, 23 November, 2015
Bridges in movies do not behave as they would in the real world, when blown up or attacked, says structural engineer Alex Weinberg, who contends that audiences are being duped by the way filmmakers depict bridges that have somehow been damaged. And it’s Christopher Nolan, of all people, who appears to be the worst offender in this regard:
Imagine stringing a clothesline between two buildings and putting some shirts out to dry. Now, cut the line in the middle. In our world, the line loses all its capacity and the shirts all fall to the ground. In Christopher Nolan’s world, the clothesline is unharmed and, who knows, may actually be stronger. I consider this the worst suspension bridge destruction scene in motion picture history. The Golden Gate Bridge collapse in The Core is somehow more realistic than this. Nolan, who famously hired astrophysicist Kip Thorne to advise him on black holes for Interstellar, failed to hire a sophomore engineering student to explain regular gravity here on Earth.
Monday, 30 June, 2014
Curious as to why drops of water formed marble-like shapes on the leaves of certain plants in his garden, rather than sitting in flat, pancake-like fashion, US engineer Aatish Bhatia decided, with the help of Janine Nunes, to find out what was causing the leaf to become superhydrophobic.
But how does a leaf become superhydrophobic? The trick to this, Janine explained, is that the water isn’t really sitting on the surface. A superhydrophobic surface is a little like a bed of nails. The nails touch the water, but there are gaps in between them. So there’s fewer points of contact, which means the surface can’t tug on the water as much, and so the drop stays round.
Friday, 9 May, 2014
Just because the design of a tool – or once upon a time – weapon, has changed little in centuries, should it be assumed it cannot be improved on in anyway? Take the axe, for example, were its current design to be given some thought, could a better chopping tool be forthcoming?
Thursday, 12 September, 2013
An animated guide to the workings of the internal combustion, or car, engine.
Quite awesome really.
Tuesday, 22 January, 2013
Akin’s Laws of Spacecraft Design… though I think the application of some of these need not be restricted to spacecraft design:
- At the start of any design effort, the person who most wants to be team leader is least likely to be capable of it
- In nature, the optimum is almost always in the middle somewhere. Distrust assertions that the optimum is at an extreme point
- A bad design with a good presentation is doomed eventually. A good design with a bad presentation is doomed immediately
- Half of everything you hear in a classroom is crap. Education is figuring out which half is which
- You can’t get to the moon by climbing successively taller trees
Wednesday, 3 October, 2012
While you wouldn’t be sucked out of an aeroplane cruising at high altitude should one of the windows somehow open, as per the popular perception, it still wouldn’t be an especially pleasant experience:
An open window would create powerful suction immediately around it, though it would not suck everything out as you see in movies. Mostly passengers inside would feel short of breath and start to pass out. Small objects might be pulled out the window. There would be a loud pop and after that, the sound of a power-sustained gust of wind, as air flowed out of the inside of the airplane. Air would keep flowing out of the open window until the pressure inside the plane was the same as the pressure outside – in most cases, this would mean making up about 22,000 feet worth of pressure in minutes.
Friday, 11 May, 2012
All good design is a trade off. A bag of potato chips may be mildly difficult to open but the sealing process prevents it from opening sooner than intended.
Variations in atmospheric pressure, say as the chips are transported from a sea level to an area of high altitude, may be enough to cause the packets to open, something that most certainly necessitates a strong seal.
In a heat seal, you are attempting to melt the adhesive polymer and get it to flow into the other layer. Upon cooling, the two layers are now entangled and show adhesion. The strength of a heat-seal depends on three and only three variables: time, temperature and pressure. Increasing any of this will increase the strength of the bond, but most manufacturing engineers are really only open to increasing pressure. Increasing sealing time slows the entire process, and increase the sealing temperature also slows the process since it takes longer to heat the adhesives to the higher temperature, that adds to the time as well. The best option was to develop an adhesive that sealed at a lower temperature, something that was successfully accomplished, or so I’m led to believe from all the complaints that colleagues pile on me now that they know I’m that guy.
Friday, 24 February, 2012
Featuring in the sci-fi novels of authors such as Arthur C. Clarke, space elevators could be in use within forty years if a Japanese construction company succeeds in its bid to build one of the travel mechanisms.
In Obayashi’s project, a cable would be stretched up to 96,000 kilometers, or about one-fourth of the distance between the Earth and the moon. One end of the cable would be anchored at a spaceport on the ground, while the other would be fitted with a counterweight. The terminal station would house laboratories and living space. The car could carry up to 30 people to the station at 200 kilometers per hour, which would mean a 7-1/2 day trip to reach the station. Magnetic linear motors are one possible means of propulsion for the car, according to Obayashi.