Why did hydrofoils never take off?
Eemm anon are you retarded?Hydrofoils arent made for take offs.They skim above the water and thats it.
>>2044074>loud af>slow afIf we never invented planes or buses they'd be alright
>>2044074because soviets were too good at making them so america had to discredit them as being commie shit not worth pursuingalso they are taking off again>>2042457
>>2044167>68km/hwhyyyyy
One issue is draft, a lot of places need dredging to accommodate them. For public transport the higher speeds are actually probably a negative because you'll only have the biggest of brainlets operating them.
>>2044074Not enough lift, not enough thrust.
>>2044074
>>2044167I think it's more related to operation constraints, the depth you need when not at speed, the safety/stability and the fact that load capacity is often more important than speedIt is cool though>>2044167I hate America right now and they did plenty of fucked up shit in the pastFuck israel too and fuck these ghoulish degenerates that support those crimes against humanity unconditioinallyBut especially in light of the Ukraine invasion by russia and the apologism that followed I am really tired of American diabolism
>>2044099This was funny and I want you to know that I chuckled
Murrica.
>>2045011is that the one that the IDF massacred and the US was like "no worries bro shit happens ha ha"
>>2045054no, that was the USS Liberty, which wasn't even a hydrofoil
>>2045984USS Plainview was decommissioned in 1978. Someone bought it in hopes of scrapping and selling the aluminum hull, but they gave up. For the past 40 years it's been a wreck on the Washington side of the Columbia River. And the Washington ecology department is looking to scrap it themselves to clean up the river.
>>2045985That's a shame, she must have been fun. Noisy vibrating fun but fun nonetheless.
>>2044074Boeing built some. Then sold the design to Kawasaki. Kawasaki supports existing boats and is considering restarting production for the local market (Japan).
>>2044074To put it simply: you get the complexity and the maintenance of a plane with the brutal environment of the sea (plus salt).I absolutely love hydrofoils but the material science just wasn't there at the time. Maybe in a couple of years...
>>2044099Glad to see the joke wasn't lost on you anon.
>>2044099Updoots all around! If I could give you some reddit gold I would.
>>2044167>because soviets were too good at making themlolnothing good has ever come from russia
>>2044074They only really work in dense archipelagoes with a lot of islands. Where going by slowboat is too time consuming, but helicopters/planes are inefficient (and take-off/landing consumes too much time as well given the short distances).
>>2044074Alexeevs, a hydrofoil designer took the next step and lifted the skis out of the water.
>>2044074Hobbled by the same thing as the Concorde: fuel costs. You have to burn a lot of paleozoic plankton to get a ship going fast enough to fly. It's just hard to get enough passenger volume to make it profitable. They also require relatively calm water, so their routes are limited.
>>2044074I remember watching those going to and from Victoria, BC on its way to Seattle in the late 70's/early 80's. It would clear the Inner Harbour and Odgen Point breakwater like a normal ship. Then when it was off Brotchie Ledge you could hear the engines rev up and as it gained speed quickly, it rose up out of the water and was gone! Impressive and fast. Very smooth even in the roughest conditions.>The Island Jetfoil made waves on the Seattle–Victoria route during the summer of 1980. Designed for passenger comfort at speeds over 45 knots (83 km/h). For context, today’s Spirit of British Columbia with BC Ferries cruises steadily at about 20.6 knots, while Hullo’s vessels travel at a swift 38 knots.
>>2046787I think any niche hydrofoils wouldve filled have been taken over by those high speed catamarans which are about 85% as quick with about a tenth the complexity/operating costs/dredging requirements and other hurdles anons have listed ITT All that said, if money and practicality were of no cosequence, for me its the Mountbatten class
>>2048424I always liked this pic of Princess Margaret. That doggie in the foreground is going to get a surprise.
>>2048455What happens if you get run over by one of those?
>>2051794*crunch*Not much different from being run over by a solid hull. The skirting is heavy and not soft and pliable. It'll smash you when it hits you. And the air pressure underneath would be slightly higher than the hull weight on the same area.
>>2047776I wish I could have seen this thing fly like you wouldnt believe.
>>2048424Saw these a lot in the 80s as a kid. Don't think I ever rode in one though. They were impressive.
>>2047789>>2048455>evidence that this civilizational cycle has peaked.They had supersonic passenger travel and men on the moon 50 years ago.How the barbarians must’ve felt looking at the ruined aqueducts of the collapsed empire.
>>2051932Pressure is evenly spread over the whole area under the skirt. You're going to notice being run over by one and it won't be nice but it'll be nothing like being hit by a car.
>>2051932so how did jackie chan survive getting run over one in "rumble in the bronx"
>>2053131because he was in a car, and didn't actually get run over
>>2053115NTA, but you are largely right IMO. That being said, the process of the skirt needing to ride over you is probably going to be a lot rougher than you are estimating it. If the craft needs to "pitch up" to get over top of you, then a lot more pressure is going to be locally present there.Like a book has a certain pressure to it lying flat, but if you prop up one corner, there's now going to be a lot more pressure on that corner and the opposite edge.Even if the hovercraft can, eventually, equalize the pressure across the entire bottom, there's going to be a disequilibrium at the moment when the hull's momentum starts deflecting.
>>2053115The same amount of pressure is needed to support the weight of the craft. Figure out the weight of the ship and devide it for the square inch. You'll have your answer. Mass doesn't magically disappear.
>>2047789>Blocks your path
>>2053304I’ve actually been on one of those. It was incredible and much smoother than I was imagining. Smoother than the usual boat ferries you get today
>>2047608Tetris
>>2053192Agreed. An SRN4 would not pitch up more than if it hit a bug though.
>>2044074I took the JR Beetle hydrofoil from Busan to Fukuoka and it was a pretty good experience. Apparently they replaced it with a slightly slower but larger trimaran now.
