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5 votes
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I hacked into my own car
7 votes -
Animals are using Utah’s largest wildlife overpass earlier than expected
11 votes -
Train passengers sing "Over the Rainbow"
3 votes -
Norway pioneered electric ferries – now it's making them self-driving
8 votes -
Alberta officials warn drivers not to let moose lick their cars
13 votes -
The new $45 billion metro system under construction beneath Paris
12 votes -
Wallenius Marine is developing a ship called Oceanbird, which could transport 7,000 cars and trucks across the Atlantic propelled only by the wind
7 votes -
How did traffic law come to be?
5 votes -
Norwegian Air said it is facing a “very uncertain future” after the government of Norway refused to grant further financial assistance to the airline
6 votes -
Saved by the whale: Dutch train runs off elevated tracks, is caught by statue's tail
9 votes -
This plane tried to do the impossible: The Caproni Transaereo
4 votes -
Are Europe's night trains back in fashion – sleeper trains were making a slow comeback in Europe before the pandemic, but will Covid-19 help or hinder a renaissance?
6 votes -
Clear signs that the Grímsvötn volcano on Iceland is getting ready to erupt again – authorities have recently raised the threat level for the volcano
9 votes -
Helicron propeller driven car (1932)
3 votes -
Any motorcyclists here?
I live in Colorado and I love cycling along twisty mountain roads. The experience of being on a bike rather than in a car is a completely different way of experiencing the state. I'm always going...
I live in Colorado and I love cycling along twisty mountain roads. The experience of being on a bike rather than in a car is a completely different way of experiencing the state.
I'm always going like 40 mph slower than the cars that pass me though, and I can only go so far before I'm completely exhausted, so I'm considering getting a motorcycle (It seems like I'd actually be safer, since at least I'm going the same speed as the people trying to kill me now). I'm signed up for an MSF class next week to get my endorsement.
I'd love to hear people's opinions on first motorcycles if anyone has them. I don't think the type of motorcycles people normally recommend (Suzuki TU250X etc) will work for me because of the large amount of steep road riding I'm planning to do, so I think I need something with a bit more torque. Something like the Triumph Street Scrambler seems like a good idea!
I'm also looking for advice about whether it's completely insane to store such a bike outside. I don't have a garage, but I do have a driveway behind my house in an alley where mostly only the residents of the block ever go. I can also block my bike in with my car when I'm not using it. Is this situation plus a disc brake and a cover enough to keep my motorcycle safe-ish from theft?
6 votes -
The farmer that lives in the middle of Tokyo Narita Airport
4 votes -
Sweden, Finland and Estonia to look at new evidence on MS Estonia sinking in 1994 – ferry sank with the loss of 852 lives, in one of Europe's worst peacetime maritime disasters
7 votes -
Environmentalists have held protests outside a court that is deciding on a tunnel link between Germany and Denmark – they say the project is flawed on many levels
6 votes -
Cities without people
5 votes -
RV life booms during the pandemic
9 votes -
A proposal for a purely electric-powered commercial airline industry
Around 3-5 years ago, Elon Musk was teasing that he thought he had a clever idea for how to make electric-powered aircraft viable/profitable with, basically, current technology ... and he was...
Around 3-5 years ago, Elon Musk was teasing that he thought he had a clever idea for how to make electric-powered aircraft viable/profitable with, basically, current technology ... and he was basically daring people to guess it.
Regardless of what he actually did or didn't know, it got me thinking, and I came up with an idea. I thought I'd run it past the Tildes Team, see if it passes muster.
My idea, in a nutshell, is to build airplanes with only 25%-50% of the battery capacity required for their flight (making them much lighter, with much more capacity for people/cargo) ... combined with, I'll call them Maser Cells on the undersides of the wings ... coupled with low-intensity maser beam emitters at all the major airports.
Airplanes use a ridiculous amount of energy gaining altitude. For short flights, it can be upwards of 50% of their fuel spent just getting from takeoff to cruising altitude. My basic idea is for planes to get up to cruising altitude in large circles over the airport, powered by a combination of battery power and maser energy beamed up from the airport below. Then stay in a taxi-ing circle over the airport until the batteries are fully charged, before departing. Longer flights can plan their route to include one or more detours to pass over other major airports (or other recharging hubs, like the Tesla Supercharging network, but for airplanes) to recharge the batteries along the way.
Trans-oceanic flights would be more challenging, perhaps requiring some kind of recharging hubs located midway in the oceans.
To clarify, my "Maser Cells" are similar to traditional solar-electric power cells, except they are optimized to convert either laser or maser beamed energy into electricity. These things already exist (I forget what they're called), although getting them to a high-efficiency commercial-airline level of production, that would take some effort.
There is, potentially, a lot of inefficiency in the conversion rates, from ground-generated electricity to ground-generated laser/maser, then on the plane, maser converted back to electricity into battery, then from battery into electric engines ... perhaps there are ways to reduce the amount of conversions necessary, or to increase the efficiency of the conversions. Or perhaps this is what kills the idea.
Similarly, if this were actually implemented large-scale, to largely replace fossil-fuel-driven planes, we would be talking about a LOT of electricity requirements, a lot of laser/maser emitters at every airport, and a massive redesign of flight traffic management, to allow for hundreds of planes routinely in hours-long recharging flights over every airport, all the time ... potential choke-points at various recharging hubs (again, similar to what Tesla sees at overly-popular Supercharging stations on the ground) ... and doubtless lots of other issues I'm not thinking of.
Anyway, though, that's the notion.
ETA: This idea could be extrapolated to an extreme degree, with on-board batteries almost completely eliminated.
With clearly defined flight corridors, and ground-based maser power stations located every 10-20 miles along, planes could fly their entire route on power beamed up to them, with only 20-30 minute battery capacity for emergencies.
ETA #2: A person who owned his/her own rocket company might also consider putting the maser cells on the tops of the planes, and launching a bunch of solar-power-generating satellites, with maser emitters shooting power down onto them.
I guess my main point is, if this maser-energy delivery system is even remotely feasible at a commercial level, there's a lot of potential.
10 votes -
Safety lessons from the morgue
6 votes -
Adding a 3D printer to the garage might finally make sense
8 votes -
What made the Viking longship so terrifyingly effective?
7 votes -
Check in but never leave: Taiwan offers fake flights for travel-starved tourists
5 votes -
Architecture studio Cobe and engineering firm Arup have designed the Orienktaj and Nordhavn Metro stations as part of a docklands development in Copenhagen
5 votes -
Indonesia’s tricked out Vespas
9 votes -
Archaeologists in Norway have begun the first excavation of a Viking longship in more than a century
6 votes -
London Tube map made from a working circuit board
8 votes -
Australian airline coronavirus (COVID-19) rules: We flew the Sydney-Melbourne route under new hygiene rules
5 votes -
Windshield phenomenon
14 votes -
Traffic sounds - 3D binaural recording of the M60 motorway, UK
5 votes -
Utrecht: Planning for people and bikes, not for cars
11 votes -
Coal fired steam bike
7 votes -
Used-car prices bounce back after giving US industry a scare
9 votes -
Andy Byford to be commissioner of Transport for London
6 votes -
Roadliners - A short documentary
6 votes -
Pakistan plane crash survivor: 'All I could see was fire'
6 votes -
Microsimulation of traffic control: Onramp
8 votes -
RIP Captain Jen Casey -RCAF Snowbirds Public Affairs Officer that perished in crash today
7 votes -
New Tesla "million mile" battery in development that relies on little to no cobalt, poised to reshape auto economics
7 votes -
The real Lord of the Flies: What happened when six boys were shipwrecked for fifteen months
32 votes -
What's so special about Viking ships? | Jan Bill
7 votes -
Paris has a plan to keep cars out after lockdown
20 votes -
Tesla 2020 Q1 financial update
4 votes -
I sing the airplane electric—Until now, an airplane was never a cheap date
6 votes -
Why the An-225 Mriya is such a badass plane
7 votes -
Sweden could soon be within easy reach of London by overnight sleeper train under proposals drawn up by the country's rail planners
12 votes -
New York City aims to open up 100 miles of streets to pedestrians during crisis
4 votes