Science - Boeing Starliner launch from CC

impressive, remove the friction and significantly decrease the required energy. working prototype in testing

IronLev's Groundbreaking Passive Maglev Tests Could Revolutionize Rail Transport on Existing Tracks (msn.com)

IronLev’s system represents a significant departure from traditional maglev technology, which relies on an active electromagnetic cushion that can be costly to maintain and requires specialized infrastructure. As co-founder Luca Cesaretti put it, “Thanks to the features of our technology and to low and speed independent frictions, we can move a 10-ton wagon with the same force that is needed to lift a 22-lb backpack.” This innovative approach seeks to democratize maglev transit by making it compatible with the over 1.5 million kilometers of existing iron railways around the world.

The recent tests on the Adria-Mestre route in the Veneto region of Italy are a testament to the adaptability of IronLev’s system. A prototype weighing a ton reached speeds of 70 km/h (43.5 mph) with motors situated at each skid, without requiring any modifications to the existing tracks. Cesaretti highlighted the potential cost savings, aiming to “cut the infrastructure costs tenfold with respect to existing systems.”

In fact, while traditional maglev networks require significant investment in new infrastructure, the concept here aims to utilize over 1.5 million kilometers of pre-existing iron railway tracks worldwide. Presently, the team has successfully conducted a trial run on a 2-km (1.2-mile) section of rail track along the Adria-Mestre route, in collaboration with the Veneto Region of Italy. Aside from passenger transportation, the IronLev system’s applications are vast, with potential benefits for industrial sectors such as automated parking systems, roller coasters, and even seismic base isolation systems, due to the lack of wear and friction traditionally associated with wheels.

The IronLev venture is not only a step forward in transport innovation but also an illustration of the versatility of passive maglev technology. With the team dedicated to refining the system for commercial deployment, the potential to repurpose existing rail infrastructure into a high-speed, energy-efficient network without the significant capital investment previously required for maglev systems could disrupt rail transportation as we know it. As we move towards a future where fast, quiet, and efficient transportation is in high demand, IronLev’s recent test on conventional tracks offers a tantalizing glimpse of what could become the new normal for rail travel.

 

I'm not smart enough to understand what is written here, let alone begin to imagine the implications this could have down range when advanced with greater focus by more people. If we can learn to manipulate and stop light, can we be far from manipulating time? If we can stop light, do we create a claok of invisibility or a black hole or a shining light?

the materials advances that are forthcoming over the next decade + are going to launch a major revolution to either propel humans or destroy them. I suspect that 20 years from now this will be considered a golden age of science.

Quantum leap: Scientists make light waves ‘stand still’ (msn.com)
A team of researchers from AMOLF, in collaboration with Delft University of Technology, has successfully brought light waves to a halt by deforming the two-dimensional photonic crystal that contains them. The researchers demonstrate that even a subtle deformation can have a substantial effect on photons in the crystal, resembling the effect that a magnetic field has on electrons.

"This principle offers a new approach to slow down light fields and thereby enhance their strength. Realizing this on a chip is particularly important for many applications," says AMOLF-group leader Ewold Verhagen.
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The group of Verhagen, in collaboration with Kobus Kuipers of Delft University of Technology, demonstrated a similar effect for light in a photonic crystal. "A photonic crystal normally consists of a regular -- two dimensional -- pattern of holes in a silicon layer. Light can move freely in this material, just like electrons in graphene," says first author René Barczyk, who successfully defended his Ph.D. thesis on this topic in 2023.

"Breaking this regularity in exactly the right manner will deform the array and consequently lock the photons. This is how we create Landau levels for photons," Barczyk concluded. In Landau levels, light waves no longer move; they stand still instead of flowing through the crystal. The researchers succeeded in demonstrating this, showing that the deformation of the crystal array has a similar effect on photons as a magnetic field on electrons.

 

New propeller concept increases propulsion efficiency by over 20% using electric motors and

Photos: Super maneuverable Swiss marine propeller offers 85% efficiency (msn.com)

An independent study performed by OSK-ShipTech A/S revealed that a passenger vessel design equipped with different propulsion solutions saves on energy consumption by up to 22 percent compared to conventional shaftline configuration. The Dynafin concept is fully compatible with zero-emission battery and fuel cell technologies.

Initially available in the power range of 1–4 MW per unit, the new propulsion concept will particularly be effective for medium-sized and smaller vessels. These include ferries for passengers and vehicles, offshore support vessels operating at wind farms, and yachts. The system improves passenger and crew comfort by reducing vibrations and noise levels. In addition, the concept follows ABB’s proven design philosophy of gearless power transmission, delivering superior maneuverability and positioning performance.

Besides superior maneuverability, ABB is promising instant thrust control and precise dynamic positioning capabilities, aiming for an open-water efficiency of up to 85%. The modular concept can also be optimized for different operator needs, different ship types, and hull types. ABB notes that the concept could be deployed on vessels running electric, fuel-cell, or hybrid systems where large battery banks can take up valuable cargo space. These vessels could operate in “sensitive marine areas.” The motors, housed within the host vessel’s hull for reduced underwater noise, would create less turbulence, combined with the relatively “low-pressure pulses and blade-tip speeds.” The company envisions a 1 to 4 MW per propulsor unit suitable for small and medium-sized passenger or work vessels. Larger vessels, such as cruise ships, could host multiple units.

 

if they can get a 22% bump in propulsion and power it with solid state batteries being recharged by solar cover over the ship that might be worth dealing with the motors. definitely need sealed motors with the best lubricant they can make. getting the heat away from the smaller motors would seem to be a challenge.

here is another prop that claims better fuel mileage. I know a guy that has three of them on a center console with trip 400's and he says he gets between 15 - 25% better mileage depending on how hard he runs them and around 15 mph faster on top end. they are also quieter, never knew props cavitating made that much noise with an outboard. hopefully they come down in price over time. Time's best invention of 2023.

Sharrow Marine - The Propulsion Revolution is Here

 

more on the sharrow props and how they reduce noise. also applicable for drones, suspect they could do similar for airplanes

MSN