Engineering

Future of Engineering

I do find it astonishing that back in the early 1990s I was still producing handwritten material that then got typed up by a typist. Then, were edits and errors needed correcting, “cut and paste” really meant cutting and pasting paper. Applying Tipp-Ex correction fluid was normal. Wonder who uses that now? It’s still available.

Engineering practice adopted word processing rapidly from that time on-ward. It’s now almost inconceivable that anyone would get someone else to type up their work. Early lap-top computers that weighted heavily on the shoulders, were carried to meetings as necessity but not love. The joys of trying to find a printer that would work was a daily mission.

In about 30-years we’ve gone from that primitive introduction to the digital realm to machines that want to write papers and reports for us. From brick like “portable” computers that required cables and batteries that drained in minutes to the complete world being available on-line anywhere on the globe.

The mechanisms by which engineering design and development were done have advanced in such a way as to make the past seem rather curious. I’m not saying that we’ve become ever cleverer and more inventive with the passage of time, just that the speed of trail and error has increased dramatically.

Past mechanisms did make the ability to change a path, once set on that path, difficult. I remember the reluctance to introduce changes unless an overwhelming case could be made. In this new situation, making changes still has a cost associated with it, but the resistance to change isn’t so much driven by the processes used.

What’s happing, like it or not, is that artificial intelligence’s transformative impact is touching, or will be touching, everything we do. That includes engineering design and development.

I’d say it’s a good time to be an innovator. In theory, it should be possible to explore many more possibilities that could be explored in the past. That is for the same level of cost in time and money. There’s not a single part of engineering practice that will not be impacted. Classrooms, meeting rooms and workplaces where the business of communicating technical ideas and testing them goes on, will be fertile ground for the application of AI.

I don’t think we understand just how transformative the impact will be on engineering. It’s not all upside either. Technology’s promises are great. There are perils too.

AI can only know what it’s been trained on. That maybe extremely extensive. However, innovation comes from creativity and inventiveness where the past may only be a partial guide. Also, there’s the danger of overreliance on these almost magical tools too. New skills must develop to be critical and knowledge of the deficiencies of complex algorithms.

All of this is a bit different from paper, correction fluid, scissors and tape. What an exciting time to be a young engineer.

Transform of Future Careers

My education was an industrial one. I guess I was fortunate. No “A” levels for me.

Part of my apprentice programme was to move around the different departments of a major electronics company. That included a range from demanding technical areas, testing new designs, to the everyday pressure of a print room run by an ex-Army man who ran it as if he’d never left the Army. Yes, print rooms were once a staple part of an engineering company. Huge dyeline machines that constantly ponged of ammonia twinned with the noisiest dot-matrix printers ever made. I even got to learn some COBAL[1] with the business unit that put together our payslips. Amazingly enough I was introduced to mathematical concepts, like Fast Fourier Transforms (FFT), at a time when the digital logic needed to implement such algorithms consisted of large cabinet loads of discrete electronics. Now, my simple mobile phone can crunch numbers in this way.

Several weeks here, and several weeks there. One excursion meant spending hot summer days in the Mendip Hills at a quarry testing equipment in deep water. Another meant time working in a former brick-built railway shed that served as a small machine shop.

Of all the different experiences that I had in those formative years (16-18 years) the one that I’ll never forget was a secondment to a London based factory. The company’s training officer recognised that this small village country boy needed to go to the big city. Uppark Drive, Ilford no longer exists as a manufacturing plant. That’s no surprise. In the late 1970s that factory handled the company’s long-lived products. Technology that has gone forever.

Anyway, this is not so much about me. What I’m led to speculate about is what sort of modern-day engineering apprenticeship offers. Does it offer the variety of experiences that I had? Is industrial sponsorship as generous and altruistic as it once was? Do industry and government work hand in hand to ensure a future workforce has the skills that are needed?

Simply the answer is probably “no”. In fact, the structure and organisation of design and manufacturing organisations has changed dramatically. In aerospace there are some companies that have a major factory with every facility at their heart but most subcontract extensively. Colleges have been turned into educational shops, paid by student numbers.

Here’s a thought. It’s not so much what’s taught that’s key as much as the exposure to a variety of ways of thinking and working. A variety of exposure give a student a toolbox from which they can then draw. Finding interesting work will depend on adaptation and repurposing past skills. That’ll be the only way to assure the world doesn’t pass by at an ever-increasing pace.

I’m sure that advances in artificial intelligence (AI) will affect everyone[2]. The idea that all AI will do is displace people is wrong. It just means that, like my recollections above, the types of activities that needs to be done will be entirely different in 2065. Unless I’m highly unusual, I will be long gone. But if you are 25 years old this is worth a thought.

[1] https://archive.org/details/historyofprogram0000hist/page/n7/mode/2up

[2] https://nap.nationalacademies.org/download/27644#

Next Generation with Practical Experience

Backwards and forwards the discussion goes on platforms like LinkedIn. Everyone recognises the expected demand for engineers. This century will be as much an engineering century as any century that has gone before. Science advances rapidly. New materials are available. Computation power is shooting off the charts. It’s now possible to design, build and test more systems to do more tasks than ever before.

The question is where’s the next generation of engineers going to come from?

Here’s one aspect of the debate that I find mildly irritating. Despite that discomfort, I’m prepared to be a hypocrite on this point. It’s to discuss future education and training with an almost blinkered reference to one’s own experience. For me, that’s to look back 45-years and then project forward. This is a natural tendency that should be handled with extreme care. However much it’s good to cherish past successes they do not guarantee future ones.

My first paid job involved Rotring[1] ink pens and pencils. Drawing film and large dyeline printers. Ammonia vapour filled the print room. It’s the sort of place the term “blueprint[2]” emerged. Drawing a myriad of small mechanical components used to make-up cabinets of electronics. I’d follow them through to the workshop where they would be turned into hardware.

That world has gone almost entirely. At that time, an infant was growing. A chunky electronic pen that could be used to move straight lines around on a bulky computer screen. That infant was computer aided design. Methodically and slowly computer digitisation was taking over. Soon the whole job description; engineering draftsman, disappeared into the history books.

Today’s infant is Artificial Intelligence (AI) or at least, if we discard the hype, massive infinitely flexible computing power. As a result, we have no idea how many jobs will next disappear into the history books. So, if I have a point to make it’s along the lines of being mighty cautious about what could inspire the next generation of engineers.

Moving to the next step in my early career path. Given that I made solid progress and having an exceptionally progressive employer[3], I moved through departments each time having a go at something new. My pathway to electronic design (analogue) was step by step.

I’ve pictured an oscilloscope because that’s one of those key steps. What it provides is a way of seeing what can’t normally be seen. Sitting in a classroom learning about frequency modulation, or such like, is necessary. Doing the sums to pass exams is essential. But nothing beats hooking-up a few bits of equipment on a workbench and seeing it for yourself.

So, that’s my recipe for inspiring the next generation of engineers. Create opportunities for them to see it for themselves. Even in the massively complex digital soup that we all swim in.

Theory is fine. Being able to visualise is the best tool. Or is that just me?

[1] https://www.rotring.com/

[2] https://youtu.be/7vnGY9vXgsQ

[3] https://en.wikipedia.org/wiki/Plessey

Electrics & Mechanics

Yesterday, I wrote on LH2. The potential fuel for electric aircraft of any size. Yes, I’m not just talking about smaller commuter class transport aircraft.

Let me take some anecdotal evidence from the transition that is going on in road transport. Repairer turns up to fix an electric car that will not start. It’s a simple matter given that the car has been standing unused for a long time. The battery had discharged. A quick charge from another battery pack and all is well. Meantime in conversation it’s clear that the repairer hates working on electric cars. I could say, no surprise, they were trained on combustion engines and have been forced to make a transition in technology.

What’s evident here is the apprehension of a person who likely has a mechanical bias towards their work and the necessity to take on fixing powerful electrics. Mechanics, those who love working with moving parts, often have a dislike of electrics and electronics. It’s an engineer’s “feeling” expressed to me casually over the last 40-years.

In fact, it can be the reason that a design or maintenance engineer took the career path that they did. There is a dividing line between mechanical engineers and electrical engineers that is embedded in our institutional, educational, and training systems.

So, there’s two practical human issues to grapple with in a transition:

Propensity of one branch of technically capable people to find mechanical work less fearsome and more satisfying than electrics or electronics, and
Streaming that is embedded in our institutional, educational, and training systems. Qualifications and recognition are often not so multi-disciplinary focused.

I’m not for one single moment making a luddite argument that mechanical engineers[1] and electrical engineers[2] are two tribes that must be kept apart. Far from it. What’s more important is to recognise that transitions are hard.

New electric aircraft are going to demand technical people with a multiplicity of both mechanical and electrical knowledge. The way the engineering world has been divided up in the past doesn’t cut it. Some of our most cherished niches will need to be challenged.

Transitions of this nature always take much longer than is originally anticipated. In a way, that should be such a surprise. It’s a generational change for a community that can be conservative with a small “c”.

This is NOT business as usual. For example, handling powerful 1000-volt electric technology is not for everyone. Removing and replacing cryogenic plumbing is, again, not for everyone. The hazards are clear. The skills needed are clear.

Reorienting the aircraft maintenance engineering world is going to need new plans and programmes. Better start by enthusing people about the change rather than just forcing it.

[1] https://www.imeche.org/

[2] https://www.theiet.org/

Flying a kite

Political discussion is much as it often is. One side is an abomination the other is the only way. Reverse that theme and you can sing the song of either Conservative or Labour party. Test yourself and see if you can think of a positive, constructive, cross-party initiative that is making Britian a better place to live. And that it isn’t jam tomorrow.

We are in a particularly febrile season. Holding the front page is mostly for atrocities, resignations, scandals and promises broken. Future quizzes about early 2024 may feature the question – who was Prime Minister or why was the inevitable General Election delayed?

I stripped off the daily one-page calendar for the 15^th and the saying presented was – Imagination is the highest kite you can fly. There is a sentence to end the week. In the face of grinding pragmatic reality and the predictability of the worn out adversarial political order what if there was some imagination?

Much daily News concerns conflict, war, crime, funding cuts, inflated claims, and disagreeable personalities. No wonder people are turning off serious News media. A diet of current events remains important in a healthy democracy. Sadly, lots of people are driven to News avoidance[1].

My recommendation is let’s have some daily News that stimulates the imagination. There’s a little tickle through on occasions. Sadly, again this is seen as a minority interest. The need for hope built on a positive vision for the future is great. The more people disengage with dependable, independent, and objective News, the more the spinners of misinformation and lies get a grip.

What is missing is imagination. It’s not so alien. To think we once had a prime-time show called – Tomorrows World[2]. It wasn’t a humours chat on a comfy sofa at teatime. Meandering about the lives of minor celebrities and entertainment plugs for coming shows.

For decades, the likes of Raymond Baxter, James Burke and Judith Hann took us on a weekly adventure. On reflection there’s an immense range in their presentations. From what now seems comical to what has turned out to be profoundly significant.

I propose a next generation version of Tomorrow’s World. It’s the Spirt of Imagination. Each week there would be an accessible, peak time, magazine style show that looks at what’s lighting up the world of science, technology, and engineering.

I’m not asking for a worthy educational STEM[3] fest. No. A show must be engaging. Not a bore fest. It must be led by talented communicators who have a passion and instinct for what people are talking about. It must look a generation ahead. Simultaneously ask grandparents to rediscover wonder.

[1] https://reutersinstitute.politics.ox.ac.uk/news/five-things-news-media-can-do-respond-consistent-news-avoidance

[2] https://en.wikipedia.org/wiki/Tomorrow%27s_World

[3] https://www.stem.org.uk/about-us

Design

Forewarned is, fore armed.

Getting it right by design matters. If a designer gets it right, then everyone who follows gets what they expect. Why am I writing these words? Well, a dumb message has come up on my computer. What I call dumb is a message that tells me something has happened but gives me no clue as to what to do next. It’s about as useful as a chocolate fire guard as they say.

Messages like: “Operation failed with unexpected error” in the top right of the screen are not helpful. Pop-ups like this are an indication that this is not a good design. It’s a kind of catch all statement that means we haven’t got a clue.

The usual response to such a message is to start over again in the hope that this is a one-off occurrence. So, that’s what I did. Guess what the same situation occurred. Not having a better strategy available, I did the same again. Same result. Thank you, Microsoft Teams.

While I’m on about that company another small but annoying bugbear comes to mind. Microsoft Mail works well enough. However, a forced error happens every so often. I find that I’ve deleted a message that I’d intended to flag to remind me to do something. A hunt for the message usually finds it mixed up with the pile to be deleted. When the delete button and the flag button are next to each other this error is almost inevitable. Why did the designers do this foolish thing?

I’ll not beat up on Microsoft too much, given that just about every software company has one of two of these annoyances to ruin your day. Good job my personal safety doesn’t depend on this stuff, I say. So much for commercial off the shelf software in 2023.

A video scrolled up on my iPad. It was that man who likes to take machines apart: James May. A couple of million people have viewed his video titled: “James May’s Tesla Model S has failed![1]”

It’s a good reminder that designers need to think about situations that go badly as much as they need to think about them going well. Vehicles do sit around in garages. Not everyone is used every day. It’s not the fault of the owner if they do not run the vehicle for a while.

Electrification is great when everything works. However, a simple manual reversion should be available when the electrics are not there to do their thing. Afterall, we don’t yet have a reliable battery that lasts forever. The door won’t open because the battery’s flat is as useful as the message highlighted at the start of these words.

Oversights during the engineering design process happens when the pressure is to get a product to the marketplace as quickly as possible. Maybe this is one of them to look out for in future. I will not be smug. This sort of obvious when you know it flaw is as likely to happen in aviation as it is in other industries. Forewarned is, fore armed.

There are also the wonders of feedback. Having made a design error, it’s mechanics who often uncover it, figure it out and then find a fix. This is a shout out for easy and open reporting.

[1] https://youtu.be/NsKwMryKqRE

Build-A-Car

How many people do you know who have taken a sharp axe to a Morris 1000[1] van? It’s a surprisingly effective tool. It was a hot day. The task took a fair degree of persistence. Nothing for an energetic 16-year-old.

What I was doing was to cut out the front sub-frame complete with the suspension complete. The van differed from the construction of the car by having a separate chassis. The Morris Minor had a straightforward torsion bar front suspension. Corrosion can be a real problem with these cars, but this old grey van was structurally sound.

The reason? For popular cars of its era, it had a ruggedness and simplicity that made it easy to work with and, I suppose, we got hold of an MOT failure with ease and probably little money. Besides a working BMC “A” series engine always had a value.

After the careful attention of my axe the remaining parts were to become the rear part of a car that we were building at school. That Morris 1000 front end would be welded to a Triumph Herald[2] front end. We didn’t do that. Our friend, mentor and teacher did the welding of the two chassis components. It was another year before I picked up that useful skill.

Why a Triumph Herald? That small car had a tight turning circle. I think it was about 28 feet. Funny, what gets remembered. That, and its availability in 1976 were the reasons it was valuable to my school friends and me. Putting all that together formed the basic frame of a car. Four wheels, brakes, steering and suspension. It was an ungainly looking crude construction, but it did the job. It was a good start.

What came next was an engine. This really was a version of that story from Johnny Cash’s[3] “One Piece At A Time.” No, the engine didn’t come from a Morris or a Triumph. It came from a Reliant[4].

That question of why comes up again? Well, the Reliant engine we had got out hands on was made of aluminium. It was considerably lighter than the engines of a Morris or a Triumph. The baby Reliant engine we had was bathed in oil. It took a good kicking to get it to spark into life. I recall trying to fix brackets for engine mountings. It was an exercise done by eye. Getting the engine to run smoothly and without too much vibration was fun.

What was entity novel for a small car was our transmission system. I don’t know how this came about but we wrote to Volvo asking for them to sponsor our school’s project. They did. They provided our school with a hydrostatic drive system. That’s the pumps/motors and the assorted hydraulic plumbing. The removal of a mechanical transmission with fixed gears was the benefit we were promoting. Hydrostatic transmissions were used in boats and construction machinery but not in a small car.

All of this was stored in a tin shed at our school. Without the stubbornness of our teacher this project may have fallen into the wilderness, but we kept the faith. As I left school the project was handed on to the next generation. It was mobile. It worked, after a fashion.

The basic car became an entry in the BP Build-a-Car competition in October 1976[5]. This was a national competition where schools around the country designed and built a “practical” 2-seater car. The prize was a new school minibus. So, the competition attracted some capable, smart, and well-resourced schools.

I’d started an apprenticeship by then so didn’t get to go on the trip to the Royal Electrical and Mechanical Engineers (REME). This was the site for the contest to show off what the cars could do.

It was reported back to me that some of my designs for an electronic dashboard using LEDs attracted the interest of the judges. At the time Lagonda were ready to take on the world with a bold new design and a car with electronic instrumentation[6].

Later in my career, aircraft cockpit instrumentation design and integration were a big feature.

NOTE: I suddenly have more respect for Rick Astley. Just watch She Makes Me (Official Music Video)

[1] https://www.mmoc.org.uk/

[2] https://www.autoexpress.co.uk/classic-cars/104977/triumph-herald-buying-guide-and-review-1959-1971

[3] https://youtu.be/Pv8yTqjYCGM

[4] https://www.reliant.website/history.shtml

[5] https://youtu.be/evDWFB58Vo0

[6] https://www.auto-data.net/en/aston-martin-lagonda-ii-5.3-310hp-3052#image3

I know this is not a new issue to raise but it is enduring. Years go by and nothing much changes. One of the reasons that “engineering” is poorly represented in the UK is that its voice is fragmented.

I could do a simple vox pop. Knock on a random door and ask – who speaks for engineers in the UK. The likelihood is that few would give an answer, let alone name an organisation. If I asked who speaks for doctors, those in the know would say the BMA[1]. If I asked who speaks for lawyers, most would answer the law society[2]. I dare not ask who represents accountants.

Professional engineering institution have an important role. That’s nice and easy to say, in-fact all the ones that are extant do say so. Supporting professional development is key to increasing access to engineering jobs. It’s spokespersons, specialist groups and networking opportunities can provide visibility of the opportunities in the profession.

So, why are there so many different voices? There’s a great deal of legacy. An inheritance from bygone eras. I see lots of overlap in the aviation and aerospace industries. There’re invitations in my in-box to events driven by IET[3], IMECHE, Royal Aero Society and various manufacturing, software, safety, and reliability organisations.

The variety of activities may serve specialist niches, but the overall effect is to dilute the impact the engineering community has on our society. Ever present change means that new specialist activities are arising all the time. It’s better to adapt and include these within existing technical institutions rather than invent new ones.

What’s the solution? There have been amalgamations in the past. Certainly, where there are significant overlaps between organisations then amalgamation maybe the best way forward.

There’s the case for sharing facilities. Having separate multiple technical libraries seems strange in the age of the connected device. Even sharing buildings needs to be explored.

Joint activities do happen but not to the extent that could fully exploit the opportunities that exits.

If the UK wishes to increase the number of competent engineers, it’s got to re-think the proliferation of different institutions, societies, associations, groupings, and licencing bodies.

To elevate the professional status of engineering in our society we need organisations that have the scale and range to communicate and represent at all levels. Having said the above, I’m not hopeful of change. Too many vested interests are wedded to the status-quo. We have both the benefits of our Victorian past and the milestone of that grand legacy.

[1] https://www.bma.org.uk/

[2] https://www.lawsociety.org.uk/en

[3] http://www.theiet.org/

Step on the Moon

This coming Wednesday it will be 50-years since the last human footstep was made on our Moon. On 11^th December 1972, Apollo 17 arrived on the surface of the Moon. Although 10 Apollo missions were planned to step on our Moon only 6 were made. The last man on the Moon left on 14^th December 1972. Eugene Cernan was the astronaut who made that last footprint[1].

This last week, I listened to an online lecture called: “Return to the Moon: “Apollo” for a new generation”. Professor Craig Underwood gave that lecture[2] at Surrey University. He reflected on the success of the Apollo moon landing missions between 1969 and 1972.

Just as he did it gave me cause to reflect on the impact that space adventure had on my boyhood self. Those years from age 9 to 12 must have had a profound impact on not only Eugene Cernan but Professor Underwood and me. We each became electrical engineers.

We became captivated by the unbounded capacity of engineering to change the world around us. It’s true that’s a double-edged sword in that both positive and negative transformations can occur. Notably, we can see that with the current use of airborne drones. On the one hand they can be used to deliver medical supplies on the other hand they can deliver devastation in war.

Here in the UK, we have a lot to thank Gerry Anderson[3] too. The creator of Thunderbirds, Captain Scarlet, Stingray, Joe 90, UFO and Space:1999 had a market impact on both the Professor and me. Colourful fantasy it may have all been, but those stories captured the imagination a generation.

The British TV series UFO and Space:1999 envisioned a permanently stationed Moon base. The leaps of the imagination in the 70s were partly due to the real achievements of the Apollo missions. Maybe it was beyond us to have a working base on the Moon by 1999 but now it’s starting to become a practical possibility.

Today, Sunday, NASA’s Orion capsule arrives home[4]. All being well, the spacecraft will splashdown in the Pacific Ocean after a 3-week trip around the Moon. I wish the project good fortune.

POST: Sunday 17:40 GMT. The Orion spacecraft, which is to carry astronauts to and from the Moon, has splashed down in the Pacific Ocean after its test flight

[1] https://thelastmanonthemoon.com/

[2] The Institution of Engineering & Technology

[3] https://www.gerryanderson.com/

[4] https://www.nasa.gov/exploration/systems/orion/index.html

Avionics

Segmenting, categorising, and naming technical subjects has a long history. However, it’s not often there’s a back story to say what’s in each name. Numerous definitions exist. These are quite often an afterthought. Naming that evolves rather than can be traced to a single author.

The subject on my mind is Avionics. It’s a ubiquitous term in aircraft engineering. In fact, it’s applied much more widely than that because administrators, pilots and air traffic controllers all use it. So, let’s look at the history, etymology and usage of the word.

The word seems obvious, as to not need a definition. Bring the world of aviation and electronics together and there it is – Avionics. However, Avionics often extends beyond the world of aviation and into space. So, it may be better to say, bring the world of aeronautics and astronautics and electronics together and there it is – Avionics.

Notice that it’s electronics and not electrics that forms the definition. A loose distinction between the two might be to say that, in terms of electric current, electronics is anything below an ampere[1] and electrics is that above an ampere.

Marconi was the first to experiment with airborne radio. It was even available to pilots in the First World War. However, spark-gap radio was unloved, heavy, and awkward.

The name Avionics started being used in the 1940s. VHF radio communication between aircraft and ground stations was vital to an aircrafts’ operation. The fabrication of radio valves in high volumes and at low costs led to the use of numerous radio technologies: communications, navigation, RADAR and Radio Altimeters to name a few.

The science and technology of electronics, and the development of electronic devices has advanced faster than that of aircraft design and manufacture. Avionics engineering has been divided into numerous sub-fields as a result.

Where once an aircraft could complete safe flight and landing with a complement of defective avionic equipment that is no longer the case. It’s quite the reverse, as the current generation of both military and civil aircraft are highly depended upon the correct functioning of their avionic systems.

Often the more complex an aircraft and its operation becomes, the more complicated the avionic systems become. Aircraft flight-control systems can be of great sophistication. By contrast a VHF radio hasn’t changed much, in its basic function, for decades.

Although avionics is a common term, it doesn’t often find its way into legislation or everyday usage. There’re certainly great swathes of the population for which the word means nothing. It’s an unusual day if the six-o’clock news has a reference to this technical word.

[1] https://www.npl.co.uk/si-units/ampere