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Meanwhile, in a galaxy far far away on the Slurmthing Affel message boards: "So these hypothetical creatures would just totter around on long meat poles? That would require some kind of extremely sophisticated balancing and movement correction ability to keep from falling over all the time, seems like wheels are a lot easier."
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Oct 16, 2020 17:51
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How in the goddamn gently caress would it turn the wheels
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Oct 16, 2020 17:55
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with its arms, like a wheelchair that or it rolls through jet propulsion. or sails
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Oct 16, 2020 18:00
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have it be a round bone thing that is almost entirely wrapped by the creature's body. kinda like this: inside the wheels' arches are tons of flagella-like muscles that can steer the sphere of course the creature's brain has to be insanely well developed to be able to control tens of thousands of muscles with incredible precision, and the flagella also have to be super strong so that the sphere doesn't actually ride against the main body but yeah planes
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Oct 16, 2020 18:06
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Philip Pullman invented roller-blading animals in His Dark Materials, they just basically use a sort of coconut held between two claws as a wheel. It's exceedingly goofy, not that the rest of the work is in any way serious. But organically, the best thing I can see being theoretically possible would be to have "wheel feet" that do however many turns the tissue can manage to allow (it's not gonna be much), then you raise it, pivot it 180 degrees, so now it can do turns in the other direction, and repeat the process, pivoting the other way around, doing some more turns, and so on. Would that be more energy efficient than just walking? How would such a system evolve? Can't really imagine the answers to that.
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Oct 16, 2020 18:21
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It's a bit off to the side, but there is such a thing as naturally-occuring gears https://www.smithsonianmag.com/science-nature/this-insect-has-the-only-mechanical-gears-ever-found-in-nature-6480908/ Of course, there's only one example we know about. (Also kinda cursed that the first examples I found when I searched for this were either from the JWs or Answers In Genesis. A God that would invent biological gears and only use them on one crappy little bug isn't a designer worthy of our praise, fellas.)
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Oct 16, 2020 19:02
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Wouldn't the animal wheels suck before there were roads?
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Oct 16, 2020 19:03
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Ola posted:Wouldn't the animal wheels suck before there were roads? Maybe they evolved on vast, flat lava plains where resources are scarce and low-friction rolling is the best means of locomotion 
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Oct 16, 2020 19:11
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E - dammit
Warbird fucked around with this message at 19:15 on Oct 16, 2020 |
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Oct 16, 2020 19:12
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Safety Dance posted:Maybe they evolved on vast, flat lava plains where resources are scarce and low-friction rolling is the best means of locomotion in that situation I feel like there would be no real evolutionary advantage to having wheels instead of just being a big tough leather ball, maybe with retractable feet. a spherical turtle.
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Oct 16, 2020 19:15
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Wheels suck feet suck wings cool
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Oct 16, 2020 19:58
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Sagebrush posted:in that situation I feel like there would be no real evolutionary advantage to having wheels instead of just being a big tough leather ball, maybe with retractable feet. a spherical turtle. Or an armadillo on a hill or something. A tumbleweed is actually the closest in nature I guess.
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Oct 16, 2020 20:03
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No I’m pretty sure it’s this spider that morph balls its rear end out of the danger zone: https://www.youtube.com/watch?v=brh8Fv7Lw9M
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Oct 16, 2020 21:08
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i own every Bionicle posted:No I’m pretty sure it’s this spider that morph balls its rear end out of the danger zone: Presumably it escapes because its predators stop to admire, applaud and hold up score cards with 9.0 9.5 10 10 9.5
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Oct 16, 2020 21:14
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Sagebrush posted:in that situation I feel like there would be no real evolutionary advantage to having wheels instead of just being a big tough leather ball, maybe with retractable feet. a spherical turtle. I mean yeah, but we're basically writing science fiction at this point.
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Oct 17, 2020 00:48
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Safety Dance posted:I mean yeah, but we're basically writing science fiction at this point. Specifically, David Brin's Uplift series. https://uplift.fandom.com/wiki/G%27Kek
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Oct 17, 2020 03:06
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i own every Bionicle posted:No I’m pretty sure it’s this spider that morph balls its rear end out of the danger zone: One of my favorite science youtube channels recently did a whole video about rolling animals: https://www.youtube.com/watch?v=KIE7iET7yBo
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Oct 17, 2020 03:46
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Wheeled animals would fart themselves along jet turbine style
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Oct 17, 2020 04:08
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pulsejet beetle propulsion when
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Oct 17, 2020 04:11
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Platystemon posted:pulsejet beetle propulsion when Almost there.
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Oct 17, 2020 05:02
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https://www.youtube.com/watch?v=olBTZId5dlY&t=1m0s
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Oct 17, 2020 05:33
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The Australian built Mirage III's did have some cracks on them
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Oct 17, 2020 07:14
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https://www.youtube.com/watch?v=gtvCnZqZnxc
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Oct 17, 2020 08:51
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Cojawfee posted:When does the bird go into gimbal lock? It was a joke about birds having to grow slip rings and brushed contacts in it's vertebrae more than anything else so we shouldn't try and look too deeply at it. But it's not really gimbal lock so much as the bird has some significant limits on the 3 DoF rotational movement of the head in relation to the path of travel before it has to pivot the whole outer frame of it's body around to allow free movement again.
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Oct 17, 2020 16:05
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Ola posted:Wouldn't the animal wheels suck before there were roads? Well, we've been sticking roads around the world for a few thousand years now. Maybe, if we can manage not to kill ourselves off and keep some form of road around for some indefinite period longer we could see animals start to evolve to take advantage of them.
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Oct 17, 2020 16:09
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https://www.youtube.com/watch?v=hI2cvaAx8j4
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Oct 21, 2020 00:50
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I've been following this now that you guys brought it back to my attention, and the dude is concerning. My father-in-law mentioned this plane to me a while back but I never looked into it too closely as it just seemed like a Velocity ripoff. Now it's like a train-wreck I follow out of some morbid curiosity, just waiting for the day his family posts a video in memoriam. He somehow managed to get this thing to weight 1,000lbs more than a Cirrus! It's 3600 lbs with what appears to be the wing-area of a lounge chair. https://www.youtube.com/watch?v=7K7UjOnWcRU
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Oct 21, 2020 03:55
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charliemonster42 posted:I've been following this now that you guys brought it back to my attention, and the dude is concerning. My father-in-law mentioned this plane to me a while back but I never looked into it too closely as it just seemed like a Velocity ripoff. "removing fuel from the tanks in order to have that as not a CG problem" Careful there buddy, don't remove it all!
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Oct 21, 2020 12:40
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Humphreys posted:"removing fuel from the tanks in order to have that as not a CG problem" Removing all the fuel is the simplest way to make the aircraft safe.
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Oct 21, 2020 12:53
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Cat Mattress posted:Removing all the fuel is the simplest way to make the aircraft safe. I think that depends on your phase of flight.
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Oct 21, 2020 14:50
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Humphreys posted:"removing fuel from the tanks in order to have that as not a CG problem" There isn’t a lot of attention paid to a bunch of details that affect the weight. Brackets, tanks, baffles, etc are all built brick shithouse style. It adds up.
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Oct 21, 2020 14:56
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Murgos posted:It was a joke about birds having to grow slip rings and brushed contacts in it's vertebrae more than anything else so we shouldn't try and look too deeply at it. But it's not really gimbal lock so much as the bird has some significant limits on the 3 DoF rotational movement of the head in relation to the path of travel before it has to pivot the whole outer frame of it's body around to allow free movement again. ooo that would be a lot easier if it only needed 3 or 4 conductors instead of millions, maybe the real missing link is a biological serialized data bus
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Oct 21, 2020 16:59
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I Watch it so You Don't Have To: Song of the Clouds (1957) https://www.youtube.com/watch?v=EP-vZIKQVAk
Nebakenezzer fucked around with this message at 17:38 on Oct 21, 2020 |
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Oct 21, 2020 17:12
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Before satellites the only way to know what the weather was doing was to observe it and radio someone. Once transatlantic aviation really took off it was worth staffing a meteorological observation network so planes could avoid flying into bad stuff.
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Oct 21, 2020 17:47
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Nebakenezzer posted:I Watch it so You Don't Have To: Song of the Clouds (1957) The turboprop at 6:10-and-a-bit is a Viscount - RR Darts and the big oval windows are unmistakeable. And they did have a network of weather ships in the Atlantic until automated buoys and satellites came along to provide the same info. France and the USCG both used ships to provide forward-observation of weather systems in the 1930s, and the Allies formed a very substantial Atlantic weather-reporting network in WW2 using a combination of reports sent by ships moving back and forth across the ocean on other business and dedicated reporting ships which would stay in pre-determined positions and were equipped with more sophisticated and wide-ranging meteological equipment. The benefits were such that ICAO oversaw the creation of an international pool of weather ships in the Atlantic and the Pacific in the late 1940s, using a combination of hired merchant ships, tasked naval/coast guard ships and specially-designed vessels. As well as meteological and oceanographic readings, the ships served as radio relays, nav aids and SAR units. The network lasted until the mid-1980s.  Years ago I went round a preserved 1950s French weather ship (which they designated a 'meteo-frigate', which sounds like something from a steampunk novel) in La Rochelle: https://www.weatherships.com/the-ships/france-i-ii Edit: In a similar vein, I'm always rather partial to this 1959 NATO publicity/propaganda film, 'High Journey', narrated in fine form by Orson Welles as a disembodied camera drifting over Europe, intercepted/escorted by the fighter aircraft of the various NATO air forces. Some good classic jetliner footage near the beginning, too. https://www.youtube.com/watch?v=9ZaLL-vQ58s BalloonFish fucked around with this message at 18:43 on Oct 21, 2020 |
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Oct 21, 2020 18:38
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Nebakenezzer posted:[*]32:20 - WHAT HATH MAN WROUGHT Tag yourselves, I'm the pencil mustachioed treaty signet
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Oct 21, 2020 19:01
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charliemonster42 posted:I've been following this now that you guys brought it back to my attention, and the dude is concerning. My father-in-law mentioned this plane to me a while back but I never looked into it too closely as it just seemed like a Velocity ripoff. Man, you sent me back down this rabbit hole, and what a ride it was. As you say it appears to be a mod of the Velocity XL, down to reusing parts as-is. https://www.velocityaircraft.com/xl https://www.youtube.com/watch?v=QF024xnfzAU So all that stuff where he was declaring the instability was just turbulence in the giant empty wheel wells when the gear is down? The Velocity XL has the same gear and same wheel well, but doesn't wobble around the pattern. Based on pictures of the Velocity XL and Raptor, he's tweaked the aerodynamic configuration of airfoils, control surfaces, and body shape. With it being overweight, there's probably also weight and balance issues. So he's ripped off a working design and made it look cooler and redesigned it around a theoretically cheaper engine, but it's not stable because he's not an aeronautical engineer and apparently canard configurations are always a bit tricky. Also sounds like he had some of the same issues with the scale RC model. Instead of fixing and testing in a cycle until everything was resolved, he just kind of guessed what was happening and made changes to the full size aircraft without doing enough work to validate them on the scale model. But that's just the first few feet of the hole... He had THESE FUCKIN' GUYS running his flight test program https://www.wasabiaero.com/contact-us-ii Literal (ex-)Scaled Composites motherfuckers. Steely eyed test pilot / engineer types. Flew cross country several times to help him make the Raptor into a real airplane. https://www.youtube.com/watch?v=5gnEknj242M He fired them shortly after the session documented in that video, then took the airplane up without resolving all the things they identified. It seems clear they got the boot because they were telling him things he didn't want to hear. They're being very restrained about criticizing him, because they had to walk on eggshells just to get him to fix the issues they identified in inspection and test. I think they don't want to burn all bridges and cut off any chance of changing his mind, since it's clear he's a super high risk to kill himself and others. But god drat, that video is just a nonstop whirlwind tour of red flags. (I recommend watching it all the way through. It's a little rough in parts because they had a technical issue with wifi interference causing mic clicks, but it's so fascinating and information dense.) Apparently Wasabi is the second set of real test pilots he's fired from the project. I haven't gone that far down the hole, would love it if someone who has can give any pointers.
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Oct 21, 2020 22:34
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lmao holy poo poo
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Oct 21, 2020 22:41
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BobHoward posted:(I recommend watching it all the way through. It's a little rough in parts because they had a technical issue with wifi interference causing mic clicks, but it's so fascinating and information dense.) This is a pro watch, I know nothing about designing airplanes and you don't need to, the thing is hideously badly designed in just about every way possible.
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Oct 21, 2020 23:19
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Thanks for turning me on to Raptor Aircraft. After seeing the test flight video, I had to go back to see how it was designed and started binging every video on the channel from the beginning. So far it's been 90% CNC machining of foam and 10% me thinking "that's a future AD." I don't know a lot about planes, but I know enough to know he doesn't either.
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Oct 21, 2020 23:54
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