The seminar brought together over 200 decision-makers and experts from across the ecosystem to the Safran Campus in the Paris region. The plane of the future was at the heart of the discussions, which was also the topic of the roundtable discussion I hosted.

There has never been a more critical time to discuss innovation challenges in the aeronautical sector. For all the stakeholders in attendance, carbon-free aviation represents the primary challenge that will drive innovation for at least the next decade. Indeed, for Olivier Criou, Head of R&T & Lead Architect at Airbus, “the challenge is so big that we need to throw everything at it.”

Reaching Net Zero is an industry requirement

The well-known industry objective is to reach Net Zero by 2050. “We must do it… and we can!” reassured Jean-Paul Herteman, former CEO of Safran and current Honorary Chairman of GIFAS (the French aeronautic and space industry group). But time is running out. To meet its commitments, the industry must be ready to deploy zero-emission aircraft by 2035.

And considering development timelines, the real deadline for being ready is much closer. By 2027/2028, manufacturers and their partners must have defined both incremental and breakthrough innovations that can be integrated into future aircraft, and the associated systems design, ahead of design, test, and certification programs. It is a tight and rigid timescale for a 360° revolution.

According to Olivier Criou, everything must be reviewed, rethought, and optimized for Zero-Emissions aircraft, with three large areas of consideration and action:

1. New fuels and energy sources
2. Optimization and energy efficiency of the aircraft
3. Optimization of operations

1. We need to develop hydrogen and SAF value chains

“Sustainability for airplanes is mostly an energy management issue.” – Olivier Criou, Head of R&T & Lead Architect at Airbus

Batteries will not meet the power challenges of large aircraft. The future for many is seen in green hydrogen, and that will mean transformation across the entire value chain, from upstream production to distribution at airports. However, producing this energy in a carbon-free way requires a massive amount of renewable electricity. Air France estimates its fleet will need six nuclear reactors to produce the energy it needs. This poses questions about the future availability of this energy and its cost.

Another avenue is SAF, Sustainable Aviation Fuels. These can be biofuels from green waste, biomass, or dedicated agricultural production, or synthetic chemical fuels. Each has drawbacks regarding availability and cost. An airline like Air France plans to consume barely 10% SAF by 2030, while existing aircraft can accept between 50% and 100% SAF, depending on their age.

Innovation must also address the entire combustion cycle, beyond CO₂. That will mean improving aviation’s NO_X (nitrogen oxide) and fine particulate matter performance, as Axel Krein, Executive Director of The Clean Sky Joint Undertaking (Brussels) noted.

Listing these constraints leads to a simple conclusion: substituting kerosene with a greener fuel alone will not be enough to meet the industry’s high ambitions around the environmental performance of aircraft. Manufacturers, suppliers, and integrators must work extensively on the entire aircraft.

2. Aircraft fuel efficiency must increase dramatically

In addition to new fuels, the sector has strategic plans and ambitious objectives to improve fuel efficiency. These include:

• 50% increase for regional aircraft,
• 30% initially for Small and Medium Sized Aircraft (i.e., the A320 and A330 families), before also rising to 50%.

To reach these, aeronautical engineers must activate all the levers of innovation, starting with continuous incremental developments, particularly around materials and additive manufacturing to reduce weight, fluid dynamics to improve lift and further limit drag, and the electrification of new subsystems.

But breakthrough innovations will also be essential, especially for engines. For example, Airbus and CFM— owned by GE Aviation and Safran – are looking at open fan engines. These involve counter-rotating fans and dispensing with the nacelle, increasing the flow of cooler air through the engine, which allows more thrust to be produced with less energy. Eliminating the nacelle also reduces weight.

Whether continuous or breakthrough, these innovations will significantly impact plane system structure (implementing new open fan architectures, for example). Some future aircraft may involve a completely reinvented architecture, with revised engine positioning, or wingspans that alternate positions for flight and taxi phases.

In this changing structural environment, only one element remains steadfast and critical: safety. That of the aircraft, its passengers, or the airports that host it. As different systems emerge, safety must be maintained at levels equivalent to or higher than at present to help pilots manage increased system complexity.

3. We need to improve sustainability by rethinking flight plans and optimizing traffic

Improving “flight management” and “traffic management” represent additional opportunities in the search for reducing aircraft fuel consumption. Even if eco-piloting now plays a part in pilot training, it can still be optimized further. For example, real-time weather data, provided by enhanced device connectivity, can encourage pilots to choose one route over another.

Landing is also being looked at, with a view to improving the use of runways and tarmac to avoid long waits in the air for landing slots.

The introduction of flights in special formations is considered an interesting option. Here a lead aircraft is followed by one or more aircraft that take advantage of the vortices generated by the lead aircraft to enhance their lift. The envisaged gain in fuel consumption could reach 5% or even 10%.

Inventing new ways to work together

These three key trends have been emerging over a long period and are starting to cause market disruption. However, we need to note that this innovation must be undertaken while maintaining what Olivier Criou described as “the economic affordability of traveling by plane for our customers and for the end customer“.

To do this, the whole ecosystem must mobilize, coordinating and organizing efforts with many new entrants. These new entrants, often startups, position themselves in unaddressed niches or on breakthrough elements that complement offers from long-standing stakeholders. They work on the verticalization and integration of new systems such as EMS (Energy Management System) into aircraft. There are many technological building blocks that will interest key stakeholders in the future. In the aviation industry, the cross-fertilization of ideas between existing stakeholders and startups, to accelerate innovation and mitigate risk, has a bright future.

Beyond breakthrough innovations, continuous innovation involves all stakeholders in the design sector, production lines, and the entire supply chain, as new methods evolve of operating, collaborating, and delivery. Digital continuity, digital twins, and artificial intelligence are essential tools to manage complexity and accelerate design and production cycles. The challenge we see right now at Capgemini is to translate the commitments of our Intelligent Industry approach into action.

In the near future, AI will be embedded in aircraft that are “safety-critical environments.” That brings unknowns: how will AI be certified in future? How can safe virtual environments be built that allow for the training and deployment of AI pilots for aircraft or drones with passengers? More than ever, data must be relevant, validated, accessible, complete, and not corruptible, while responding to different global privacy regulations or, perhaps, a specific unified framework. Cybersecurity is already and will be more so in the future, a prerequisite between manufacturing divisions, clients and contributors, users, and devices.

How Capgemini can help

The strength of an integrated group like Capgemini lies in our ability to offer all the skills related to these future challenges to long-standing stakeholders, new entrants and the two combined. Manufacturers and their partners will need to enlist expertise that is not always at the heart of their business models, but which exists in abundance at a company like ours. Similarly, the lack of engineers in Europe leads to work in ecosystems, including resources. This forces us to create new cooperation patterns and collectively revalue engineering streams in aeronautics. Without this work, the entire development of the aircraft of the future is likely to be slowed down, and the ambitious deadlines for Net Zero will be missed.

Quantum Computing has the potential to be revolutionary in many computation-heavy area’s: ranging from drug discovery to financial applications. The reason? Higher accuracy and faster computation times. However, one question is often neglected: at which cost? We’ve seen that supercomputers and data centres can consume an enormous amount of energy [1,2]. Will quantum computers be the next energy-thirsty technology, or are they instead the gateway to a green computing era?

Quantum computing uses the most intriguing properties of quantum physics: entanglement, superposition, and interference. Quantum computers use these phenomena to do calculations in a completely different way than normal computers do. The result is an enormous speedup of the calculations, the ability to achieve higher accuracy levels, and solve problems that are intractable for the classical computer.

These quantum phenomena take place at a very small scale: the scale of an electron. As such, one computer calculation would barely cost any energy. However, to observe these potent quantum phenomena, the system must be completely isolated. Temperatures must be cooled to near absolute zero (-273 degrees Celsius). This comes with a large energy bill.

The energy consumption of a quantum computer scales fundamentally different from a classical computer. Classically, there is a linear scaling with problem size and complexity. For quantum computers, this may be very different. Insight into this new energy consumption of a quantum computer is essential for a green future of quantum computing.

The Scaling of the Energy Consumption

Currently, the power consumption of a quantum computer is about 15-25kW, due to the cryogenic refrigerator [3, 4, 5]. This is comparable to the energy consumption of about 25 households. Note that this power is not only consumed when a calculation is performed but is continuously consumed by the quantum computer. This leads to a large energy bill.

There is hope for the future. When a classical computer becomes twice as large, it requires twice as much energy. In the near future, a quantum computer, by contrast, may barely increase its energy consumption when scaling up. This is because the cooling volume barely increases, and heat created by extra electronics is also not expected to be significant. The largest quantum computer today is 127 qubits and scaling to 1.000 or even 10.000 qubit is possible with similar energy consumption.

In the far future, we envision quantum computers with millions of qubits, situated in large data centres. It would be naive to assume that this does not add any energy costs. Recent research shows that the energy costs will scale with the number of qubits and operations at a point in the future. This is mostly due to increased cooling costs.

There is another very important factor that positions quantum computers as potential candidates for green computing. The idea is as follows: if you must run a supercomputer for a month to solve a specific problem and a quantum computer can do it within minutes – this drastically reduces the energy cost. An example of how energy costs would scale differently for Monte Carlo simulations is shown in figure 1.

Figure 1: The Energy Consumption of a Quantum Computer scales very differently than that of classical computers. When high accuracy or complexity is required, the quantum computer may become the more “sustainable” candidate.

Recent research shows a difference in energy consumption between quantum computers and classical computers of a factor of 10.000 (!) [4]. A clear quantum energy advantage, but for a toy problem, favouring the quantum computer. The question remains whether this is applicable to more generic problems.

Recently, an energy estimate for a more generic problem was made, namely breaking the RSA encryption [6]. RSA is a very common encryption method for secure data transmission. The quantum computer is expected to have an energy consumption of 1000 times as little as a classical computer. It must be noted that this energy estimate was based on futuristic full-stack quantum computers, and still require major advances in quantum hardware.

Interestingly, this estimation also showed the timeframe where a quantum computer might be slower but requires less energy [6]. This gives a great perspective for the future. Before implementing quantum computers due to their speedup, can we implement them for green computing?

Green Computing for Financial Institutions

At Capgemini, the Olive project researched the opportunity of using quantum computers for green computing in the financial industry. This is specifically applied to using quantum computers for pricing derivatives, based on a new algorithm that allows one to do this on a quantum computer [7,8]. (See more here)

Green Computing is becoming increasingly important for financial institutions. Mischa Vos, Quantum Lead at Rabobank (one of the largest banks in The Netherlands), emphasises its importance for Rabobank:

“At Rabobank, sustainability is an integral part of our corporate mission: “Growing a better world together. The focus is now on green coding and sustainable data centres. On top of that, Rabobank is investing in green computing technologies. Quantum Computers would be an interesting new candidate.”

Financial institutions use an enormous amount of computational power to ensure security, price financial products and perform risk management. Based on the insight about the “quantum energy advantage”, quantum computing can reduce the carbon impact of these computations. Would this be interesting for Rabobank?

“This has great potential for Rabobank. Running these calculations, especially when Artificial Intelligence is involved, has a negative impact on the carbon footprint of Rabobank. Rabobank is dedicated to reducing this. At the same time, as a financial institution, we still need to perform accurate risk analysis and provide security. If quantum computing would allow us to combine the two, this would be very interesting.”  

There may be a timeframe when the quantum computer is slower, but more energy efficient than classical computers. Would Rabobank already be interested in quantum computers at this stage?

“There are certain batch-oriented calculations that Rabobank performs, and these would be ideal for this. For example, evaluating the risk portfolio of investments at a large scale, or certain fraud detection methods. There will definitely be opportunities where Rabobank can already use the slower, but more efficient quantum computers during this time frame.”

A future scenario

The current hardware limitations are the main bottleneck for practical quantum computing. However, it is important for financial institutions to be ready for implementing quantum computers when the time is right, especially when this can be important from a sustainability perspective.

Phase 1. Research & Development

The current hardware limitations are the main bottleneck. As such, firstly, the hardware challenges need to be overcome before it becomes feasible to run relevant calculations on quantum computers. The Quantum Energy Initiative points out it is important to already make conscious design choices during this phase to ensure an energy-efficient quantum computer [9,10]. This should not slow down technological progress but instead, prepare for long-term energy advances.

Phase 2. Green Energy Advantage

Due to slow quantum clock speeds, and intensive quantum error correction codes, the quantum computational advantage can take longer than the quantum energy advantage. As such, the first applications of quantum computers may be due to their energy efficiency. This will be dependent on the specific advances in quantum hardware.

Phase 3. Overall Quantum Advantage

Finally, both the quantum computational advantage and quantum energy advantage are achieved. Here, it is important to make conscious choices in the usage of quantum computers and avoid the Jevon paradox. See for example this blog on quantum for sustainability. On the other hand, this is also the phase where quantum computers can really make a difference in sustainability – making better simulations leading to better material design all the way to general climate crisis mitigation plans [11]. 

Technology leaves an indelible mark on the environment. Capgemini is determined to play a leadership role in ensuring technology creates a sustainable future. Capgemini can help with implementing sustainable IT as the backbone of a company for a greener future.  It is important to consider the environmental footprint of emerging technologies. Capgemini’s Quantum Lab can help clients understand the future possibilities of quantum technologies and build their organization and strategy that will make the potential become a reality. With this project, more insight into the real environmental cost of quantum computers is acquired, as well as the opportunities that Quantum Computers can give for green computing.

For more information on the results of Milou’s research, watch the webinar here

References:

[1] IEA, Data centres and data transmission networks, 2022. [Online]. Available: https://www .iea .org/reports/data-centres-and-data-transmission-networks .

[2] A. S. Andrae and T. Edler, “On global electricity usage of communication technology: Trends to 2030,” Challenges, vol. 6, no. 1, pp. 117–157, 2015. .

[3] F. Arute, K. Arya, R. Babbush, et al., “Quantum supremacy using a programmable superconducting processor,” Nature, vol. 574, no. 7779, pp. 505–510, 2019.

[4] B. Villalonga, D. Lyakh, S. Boixo, et al., “Establishing the quantum supremacy frontier with a 281 pflop/s simulation,” Quantum Science and Technology, vol. 5, no. 3, p. 034 003, 2020.

[5] Personal communication with Olaf Benningshof, Cryoengineer of QuTech, 2023.

[6] M. Fellous-Asiani, J. H. Chai, Y. Thonnart, H. K. Ng, R. S. Whitney, and A. Auffèves, “Optimizing resource efficiencies for scalable full-stack quantum computers,” arXiv preprint arXiv:2209.05469, 2022.

[7] P. Rebentrost, B. Gupt, and T. R. Bromley, “Quantum computational finance: Monte carlo pricing of financial derivatives,” Physical Review A, vol. 98, no. 2, p. 022 321, 2018.

[8] N. Stamatopoulos, D. J. Egger, Y. Sun, et al., “Option pricing using quantum computers,” Quantum, vol. 4, p. 291, 2020.

[9] A. Auffeves, “Quantum technologies need a quantum energy initiative,” PRX Quantum, 3(2), 020101., ISO 690, 2022.

[10] quantum-energy-initiative.org [11] Berger, Casey, et al., “Quantum technologies for climate change: Preliminary assessment,” arXiv preprint arXiv:2107.05362, 2021.

The term ‘dark factory’ can be thought of as metaphorical, for example, the factory might not actually be completely dark – its machines may require some light, if equipped with optical sensors.

Dark factories are a part of the global digital transformation and move to the Industrial Internet of Things (IIoT), which is being driven by increasingly capable robotics and automation, AI and 5G connectivity. In this article, we’ll discuss the benefits, challenges, and how companies can move forward with this concept.

Pros and opportunities

Dark factories offer a number of benefits.

• First among them is increased efficiency and productivity. Dark factories are favourable on classic efficiency drivers such as production output, for example, offering 24/7 capacity beyond traditional shift hours – and they are unaffected by the human need for breaks, vacations, or sick days. And a secondary benefit is that dark factories do not need to be located near a labor pool – which means they can be set up in other areas, exploiting opportunities like cheaper land prices or more attractive surroundings.
• This also makes them more sustainable. Dark factories can be designed to be more energy-efficient and environmentally friendly than traditional ones; an obvious example of this is that they can do away with lighting and central heating.
• All of that means decreased operating costs, due to a reduction in non-added value tasks and staff numbers, a benefit which is especially prominent in high labor cost areas.
• It also improves worker safety. Fewer workers present means reduced risk of accidents and injuries in the workplace, a significant challenge in hazardous environments. Moreover, repetitive and physical tasks can be monitored (and assisted) to avoid safety issues or future physical disablement.  
• Finally all this can lead to improved quality as well as performance. Highly specialised machines monitored by a new generation of integrated industrial information systems work with the kind of efficiency that a human cannot match. They can also provide relevant recommendations to the operator, to avoid mistakes or support decisions (eg. to recycle the product or anticipate corrective actions).

Cons and challenges

There are, of course, some shortcomings.

• Whether retrofitting an existing brownfield facility or building a greenfield one from scratch, the CAPEX required to create a dark factory is considerable – new infrastructure is required and existing infrastructure may require modification. As is obvious, there are a number of technological barriers to overcome also, for example – AI, ML, 5G, robotics and system integration. These questions should be addressed with a clear vision of the future industrial platform and/or footprint, in order to avoid any “techno push” (a risky approach in which new products and services are driven by new technology and not validated by existing market needs).
• Additionally, dark factories will necessitate new training and staffing requirements.It’s clear that new specialist skills will be required in order to design, install, maintain and operate the systems that will run these plants.
• Suitability, scalability and over-specialization form another issue. Humans are still better at many tasks, and not all processes can be automated (yet). It may be a long time before dark factories are suitable for certain types of manufacturing. For example, it’s more difficult to build generalized (as opposed to specialized) automated systems and processes. This may limit a manufacturer’s ability to quickly respond to changes in production requirements. Here, we require AI sophisticated enough for generalized problem-solving (without human aid). For example, the automation of quality control is a particular challenge.
• Technological dependence is another issue that must be planned for. Cyber-driven industrial espionage is already a serious problem in conventional factories. The sheer connectivity of dark factories creates security vulnerabilities that could be exploited by malicious actors. This could result in data breaches, production disruptions, or worse. In addition, any non-malicious technical failures could result in major production delays without rapid human intervention.

The new human structure of the Dark Factory

How might humans fit in this new environment?

Lean manufacturing taught us that we could cut out much of middle management and improve the efficiency of operations. A dark factory could cut the bureaucracy further. Broadly speaking, the dark factory means fewer people in total, but more added value per person.

Consider the ’enhanced operator’ – which could be an XR-equipped human who makes periodic visits to the facility. Instead of a person with specialist skills on one part of an assembly line, this enhanced operator would be a generalist, with a very broad understanding of the factory’s E2E processes and systems.

Headcount may reduce, but collaboration will still be key. First – collaboration between teams to understand systems, engineering, impacts on manufacturing, impacts on operations and how to handle complex situations. Second – collaboration between robots and humans, to perform complex tasks requiring both capabilities.  

Darkening the factory: what now?

Implementing a dark factory (either from scratch or by retrofitting an existing facility) will not be easy. And, the pace of transformation is sector dependent. For example, it is easier to completely automate simple and repetitive tasks, ones in which every step in the end-to-end process is understood, down to the movement and the millimeter. But not all kinds of manufacturing are quite so straightforward. As companies progress the concept, here are some steps to consider.

A transformation roadmap and change management plan

Identify the steps you need for your transformation roadmap. Is now the right time? Transitioning to (or constructing) a dark factory requires a significant investment of time, resources, and capital. It’s important to carefully evaluate the potential benefits and risks of this transition before making any decisions.

Conduct a thorough analysis of the existing manufacturing processes to determine which ones can be automated and which cannot. Is it still worth it, in light of this?

If so, you may need to work with a recognized specialist company to determine which technologies will be most effective for your specific manufacturing process. The transition could also be phased – for example, a partially automated factory could run a ’dark shift’ overnight, which could provide a test or proof of concept.

And of course – build cyber security into the plan, not as an ‘afterthought’. The dark factory’s level of connectivity (and potential vulnerabilities that result) requires it.

Consider the human implications

How can we keep humans safe in this new (mostly) non-human environment? What safety measures are required – for example, can you create areas that are safe for people to traverse? And how must people behave in a space built primarily for robots, not humans? 

Anticipate and prepare for workforce transformation: think about recruiting for the skills needed for tomorrow. What will be done about those who may lose their job to a robot – can they be retrained and retained?

Consider future operations: flexibility and scalability

As previously mentioned, people are more flexible than robots and machinery. As such, forward planning must consider how the infrastructure will flex and scale, in order to meet future market needs. Detailed monitoring and analytics can help here, identifying what systems can be optimized or replaced.

Dark factories, bright future?

The fragility of global supply chains has become increasingly apparent in recent years – Russia’s 2022 invasion of Ukraine, and the COVID-19 pandemic, in particular, have demonstrated the need to ‘onshore’ (bring back) manufacturing, so as not to be dependent on foreign sources of vital goods.

But manufacturing was, of course, originally ‘offshored’ because it was cheaper to do the work abroad. Dark factories could be an equalising force – bringing down costs so goods can be produced back at home.

It’s also important to consider that fully automated factories have been tried previously, with varying degrees of success. There are a few cautionary tales; IBM tried its own in the 1980s, but closed it because it wasn’t able to respond to changing market needs. Apple also built such a plant in the 1980s, but closed it in the early 90s – likely because the plant was unable to deal with increasingly smaller components. More recently, Tesla walked back some of the automation at its Fremont CA facility, when machines failed to meet its ambitious manufacturing targets. This shows us the importance of flexibility and forward planning.

That said, successful dark factories do exist today. In perhaps the best example, robotics manufacturer, FANUC (Fuji Automatic NUmerical Control), operates a lights out facility in Japan. Here, complex robots assemble other complex robots, with zero human involvement in the manufacturing process.

As the previous examples demonstrate, success with a dark factory can be difficult – but is possible. Dark factories offer transformative benefits in terms of cost efficiency, sustainability, safety, and supply chain resilience. They also offer a considerable competitive advantage to those who ‘get there first’, who get it right and, returning to Philip K Dick’s Autofac, keep control in human hands.