Many people take a week’s holiday at this time in the UK because Monday was the Spring Bank Holiday. We went walking in the Clwydian hills which we can see from our house to the south-west across the rivers Mersey and Dee. However, despite the walking on the wild side [see ‘Take a walk on the wild side‘ on August 26th, 2015], I did not feel particularly creative when I sat down to write this week’s blog post. Together with most of my academic colleagues, I am in the midst of reviewing student dissertations and marking end of year assessments. I have written in the past about the process of marking examinations and the tens of thousands of decisions involved in marking a large pile of scripts [see ‘Depressed by exams‘ on January 31st, 2018]. However, the constraints imposed by the pandemic have changed this process for students and examiners because the whole exercise is conducted on-line. I have set an open-book examination in thermodynamics which the students completed online in a specified time period and submitted electronically. Their scripts were checked automatically for plagiarism during the submission process and now I have to mark about 250 scripts online. At the moment, marking online is a slower process than for hardcopy scripts but perhaps that’s a lack of skill and experience on my part. However, it seems to have same impact on my creativity by using up my mental bandwidth and impeding my ability to write an interesting blog post [see ‘Depressed by exams‘ on January 31st, 2018]!
Cars that run on air might seem like a fairy tale or an April Fools story; but it is possible to use air as a medium for storing energy by compressing it or liquifying it at -196°C. The MDI company in Luxembourg has been developing and building a compressed air engine which powers a small car, or Airpod 2.0 and a new industrial vehicle, the Air‘Volution. When the compressed air is allowed to expand, the energy stored in it is released and can be used to power the vehicle. The Airpod 2.0 weighs only 350 kg, has seats for two people, 400 litres of luggage space and an urban cycle range of 100 to 120 km at a top speed of 80 km/h. So, it is an urban runabout with zero emissions and no requirement for lithium, nickel or cobalt for batteries but a limited range. A couple of years ago I tasked an MSc student with a project to consider the practicalities of a car running on liquid air, based on the premise that it should be possible to store a higher density of energy in liquified air (about 290 kJ/litre) than in compressed air (about 100 kJ/litre). His concept design used a rolling piston engine to power a family car capable of carrying 5 passengers and 346 litres of luggage over a 160 km. So, his design carried a bigger payload for further than the Airpod 2.0; however, like the electric charging system described a few weeks ago [see ‘Innovative design too far ahead of the market’ on May 5th, 2021], the design never the left the drawing board.
While pandemic lockdowns and travel bans are having a severe impact on spontaneity and creativity in research [see ‘Lacking creativity‘ on October 28th, 2020], they have induced a high level of ingenuity to achieve the final objective of the DIMES project, which is to conduct prototype demonstrations and evaluation tests of the DIMES integrated measurement system. We have gone beyond the project brief by developing a remote installation system that allows local engineers at a test site to successfully set-up and run our measurement system. This has saved thousands of airmiles and several tonnes of CO2 emissions as well as hours waiting in airport terminals and sitting in planes. These savings were made by members of our project team working remotely from their bases in Chesterfield, Liverpool, Ulm and Zurich instead of flying to the test site in Toulouse to perform the installation in a section of a fuselage, and then visiting a second time to conduct the evaluation tests. For this first remote installation, we were fortunate to have our collaborator from Airbus available to support us [see ‘Most valued player on performs remote installation‘ on December 2nd, 2020]. We are about to stretch our capabilities further by conducting a remote installation and evaluation test during a full-scale aircraft test at the Aerospace Research Centre of the National Research Council Canada in Ottawa, Canada with a team who have never seen the DIMES system and knew nothing about it until about a month ago. I could claim that this remote installation and test will save another couple of tonnes of CO2; but, in practice, we would probably not be performing a demonstration in Canada if we had not developed the remote installation capability.
The DIMES project has received funding from the Clean Sky 2 Joint Undertaking under the European Union’s Horizon 2020 research and innovation programme under grant agreement No. 820951. The opinions expressed in this blog post reflect only the author’s view and the Clean Sky 2 Joint Undertaking is not responsible for any use that may be made of the information it contains.
Last week, the continuation until at least the end of March of the lockdown, which has been in place in England since the start of the year, was announced. Many people are feeling jaded and worn out by the constraints and hardships imposed by the lockdown and are struggling to maintain their well-being and mental health. While others are trying to cope with the direct impact of the coronavirus on themselves and their family and friends. I have written before about the power of writing to transport me away from the pressures of everyday life [see ‘Feeling extraordinary at ease‘ on January 8th, 2020] and to help me order my thoughts [see ‘Thinking more clearly by writing weekly‘ on May 2nd, 2018]. These posts were inspired by reading books by Natalia Ginzburg and Sylvain Tesson. I have just finished reading ‘A Fly Girl’s Guide to University‘ edited by Odelia Younge in which Suhaiymah Manzoor-Khan writes about ‘times when my mental health was bad…writing became a solace and a friend’. In the context of institutional pressures, racism and exclusion, she describes writing about her feelings to help her to feel and listening to her own voice when nobody else would. I was reading the book to gain an appreciation of the experiences of woman of colour in a university; however, I think Manzoor-Khan’s words are relevant to everyone, especially when we are locked away and can only meet with much of our support networks via our computers and phones. Tim Hayward, in the FT in January 2021, wrote a deeply moving and insightful account of his experience of fighting coronavirus, including ten days on life support, and concludes by reflecting on how writing the article helped him handle the trauma. Of course, you don’t have to write for a newspaper, a book or a blog; although writing for an audience does focus your mind, you can write for yourself or friend and in doing so you can keep learning, take notice of your surroundings, and connect with people which will hit three out of five of the ways to well-being.
Lola Olufemi, Odelia Younge, Waithera Sebatindira & Suhaiymah Manzoor-Khan, A Fly Girl’s Guide to University, Verve Poetry Press, Birmingham, 2019
Tim Hayward, Covid and me: 10 days on life support, FT Magazine, January 22nd, 2021.