The Power Behind Rolls-Royce
My post entitled ‘Spirit of Innovation’ Stakes Claim To Be The World’s Fastest All-Electric Vehicle, was based on this press release from Rolls-Royce, which has the same title.
In the post I talk about Rolls-Royce’s experimental electric aircraft; Sprit of Innovation.
- The aircraft set a world record for electric-aircraft of 345.4 mph.
- the aircraft clocked up a maximum speed of 387.4 mph.
- The aircraft was propelled on its record breaking runs by a 400kW electric powertrain.
- Rolls-Royce worked in partnership with aviation energy storage specialist; Electroflight and automotive powertrain supplier; YASA.
For comparison, my Cessna 340A had two 230 kW engines and a maximum speed of 281 mph.
Electroflight, Evolito And YASA
YASA has this description of the company on their home page.
YASA is at the forefront of eMotor innovation and development. Our axial flux technology motors are up to 4x more powerful than those used in nearly all Electric Vehicles on the road today, whilst being around 50% smaller & lighter.
We already feature in some of the best eMotor applications across multiple sectors, and now as part of Mercedes-Benz, with sites in Oxfordshire and Welshpool, we are accelerating development of axial flux eMotors and Control Systems for of the next generation of Electric Vehicles.
Evolito has this description of the company on their About page.
Evolito was spun out in 2021 by YASA, the world-leading pioneer of automotive axial-flux electric motors acquired by Mercedes-Benz in July 2021, to exclusively commercialise YASA’s next-generation electric motor technology and IP for the rapidly-growing aerospace market. Evolito is funded by a portfolio of private investors including B-FLEXION and Oxford Science Enterprises (OSE).
Electroflight has this company story on their About page.
Founded in 2011 to address battery-electric issues in the aerospace market, we are a UK-based innovation engineering company, taking expertise from across the automotive and aerospace sectors, working with leading airframers to develop and supply next-generation battery technology.
In 2019, Electroflight, Rolls-Royce and YASA partnered to design and build the worlds fastest all-electric vehicle – The Spirit of Innovation. 3 years of dedication from the team involved integrating the full powertrain into a NXT aircraft, optimising the system to peak performance and following rigorous testing processes in an emerging market with new regulations; in 2021 the record breaking flight reached a staggering 345.5 mph!
Following the successful spinout of Evolito (YASA’s Aerospace Division) in 2021, Evolito acquired Electroflight in July 2022 to offer a fully optimised powertrain solution for the electric aerospace industry.
It appears that Mercedes-Benz now own YASA’s technology for the the automotive industry and Evolito have the aerospace technology.
Evolito’s Technology
The Evolito web site has a Technology page, which is entitled The World’s Most Advanced Electric Propulsion Solution.
- Their Axial Flux Motors are certainly a revolutionary approach.
- It looks like one of their motors has a peak power of 280 kW, a continuous power of 100 kW and weighs just 35 Kg.
There is also this page, which gives more details about the creation of the Spirit of Innovation, which has this video.
Evolito And Project Fresson
This press release from Cranfield Aerospace Solutions is entitled Cranfield Aerospace Welcomes Ground-Breaking UK Technology Innovator Onboard Project Fresson.
These paragraphs explain the link-up.
Cranfield Aerospace Solutions (CAeS) welcomes Evolito, a ground-breaking UK technology innovator onboard as the motor & inverter supplier for its hydrogen-powered aircraft demonstrator – Project Fresson.
Evolito join Reaction Engines and Ricardo as technology collaborators on Project Fresson, showcasing the UK innovation that is redefining the aviation industry.
Based in Oxfordshire, Evolito is the aerospace spin out of YASA – the world-leading pioneer of automotive axial-flux electric motors.
Producing the world’s most advanced electric propulsion system, Evolito’s motors are smaller, lighter, and typically 4 times more power dense than radial flux solutions, making them ideally suited to the emerging zero-emissions aviation markets.
Evolito’s axial-flux technology requires up to 75% less iron, less copper and fewer permanent magnets than competing radial solutions, making it lighter and more environmentally friendly.
Note.
- Project Fresson is a project to develop an electric propulsion system for Britten-Norman Islanders.
- There are 700 Islander aircraft in service.
A hydrogen propulsion system, would be useful for new aircraft and conversions.
Delivery Drone Flies Medical Supplies To Britain’s Isle of Wight
The title of this post, is the same as that of this article on Reuters.
This is the introductory paragraph.
A new drone service will reduce delivery times for urgent medical supplies to a hospital on the Isle of Wight, which lies about 8 kilometres off the south coast of England.
In some ways the most remarkable thing about this project, was that the drone was developed by Southampton University to deliver medical supplies in remote parts of Africa.
- It is twin-engined.
- It has a range of 100 km.
- It can carry a 100 kg payload.
- It can take off and land on short grass runways.
More details can be found on this page of the Southampton University web site.
This is a video of the first delivery.
Zero Carbon? Not Here! Carbon-Fibre Bogie Frame
When I was at University in the 1960s, the big UK engineering project was the Rolls-Royce RB-211 turbofan engine.
One of the features of the engine was a carbon-fibre fan blade, which saved weight and thus made the engine lighter and more efficient.
However the blades were found to shatter with bird strikes and titanium had to be used instead.
At Liverpool University, we knew something was wrong, as a fellow student on our course was the son of the Manager of Tesco in Derby. What used to happen to Tesco’s out-of-date chickens? They ended up at Rolls-Royce, where they were used to test jet engines for bird-strikes. He told us the story of the failed testing one liquid lunch-time.
That was over fifty years ago and the RB-211 has morphed into the successful Rolls-Royce Trent engine, which first ran in 1990 and is still going strong.
Carbon-fibre has gone its own way and is used in many applications from cars to tennis rackets and golf clubs.
The title of this post is the same as that of this article on Rail Engineer.
The article describes work at Birmingham University to create a carbon-fibre bogie frame.
This paragraph from the article describes the outcome.
A major achievement is that the mass of the frame as built is 350kg, compared to the steel equivalent of 936kg. By the time the metal fittings were installed and paint applied, the mass had increased to 940kg compared with the steel equivalent of 1468kg, a reduction of over half a tonne per bogie.
Lighter bogies mean lower track-access charges.
I will be interesting to see how this project ends, when a prototype has been running in a real train.
The Great Electric Air Race Has Begun
The title of this post is the first sentence of this article in The Independent, which is entitled Electric Planes: Could You Be Flying On A Battery-Powered Aircraft By 2027?.
This is the full first paragraph in an article by respected travel writer; Simon Calder.
The great electric air race has begun. Three European industry heavyweights have teamed up against a US startup and Britain’s biggest budget airline to develop the first commercial electric aircraft.
So is such an aircraft feasible?
When you consider that the three European heavyweights are Airbus, Rolls-Royce and Siemens, I suspect that the proposed project is serious.
It should also be said that the companies are not aiming for an all-electric aircraft, but a hybrid plane with a very efficient on-board generator and a two-tonne battery.
The key to success will probably include.
- Batteries with a very high energy density.
- A highly-efficient and quiet gas turbine, that generates a lot of energy.
- Radical air-frame design to take advantage of the technology.
In my view, the batteries will be the key, but making more efficient batteries with high charge densities will also do the following.
- Improve the range and performance of battery and hybrid road vehicles like buses, cars and trucks.
- Improve the range and performance of trains and trams.
- Transform energy storage, so wind and solar power can be stored and used in times of high demand.
- Allow every house, apartment or office to have its own affordable energy storage.
In all of these applications, the weight of the battery will be less of a problem.
This leads me to the conclusion, that we may see smaller electric plasnes in a few years, but the technology that will make it possible, may well improve other modes of transport so much, that electric planes are never an economic proposition.
It’ll be interesting to see what happens!
I think most travellers and members of the oublic will benefit in some ways.
If Microsoft Built Cars…
There are loads of jokes that start like this and you can find pages on the Internet like this.
But what if Microsoft built planes?
This article on the BBC shows the result.
The plan is to use the Stratolaunch plsne to launch satellites. More is here on Wikipedia.
The idea is not new, The North American X-15 of the 1950s, was a space plane that was launched from under the wing of a B-52 Stratofortress.
Wikipedia says this about the flights of the X-15
During the X-15 program, 13 flights by eight pilots met the Air Force spaceflight criterion by exceeding the altitude of 50 miles (80 km), thus qualifying these pilots as being astronauts.
Not bad for an conventional rocket-powered aeroplane built over half a century ago!
My New All-Purpose Shopping Bag
I bought this stringbag for £2.95 and when I go out, it fits neatly in my shoulder bag or pocket.
My New All-Purpose Shopping Bag
Isn’t a stringbag the most useful of bags? After all it did lend its name to that most mighty of the Royal Navy’s attack aircraft; the Fairey Swordfish, which was called the stringbag on account of its ability to carry virtually anything to its target. Wikipedia has a full explanation.
The Swordfish is almost unique amongst military aircraft for two reasons.
Several aircraft types were built to replace it in service and it out-served them all.
In some attacks, it pressed the attack home successfully, because it flew slower than the low limit of the gun-aiming computer of the ship being attacked. The Germans hadn’t believed that an attacking aircraft would be as slow as a Swordfish.
But this unusual biplane did carry out one of the most unlikely battle successes of the Royal Navy, by attacking the Italian fleet at anchor in the Battle of Taranto. The lesson was not lost on the Japanese, who inspected the port after the attack. But the Americans, who must have known what happened at Taranto, did nothing to change their thinking.
Vapour Trails Over Hackney
I took this picture this morning.
Vapour Trails Over Hackney
They’re not normally this clear, but the sky was very blue at the time.
The Anonymous Widower 