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https://i.imgur.com/EDKNTeI.mp4ekuNNN posted:
This has to be an art installation or something. In thumbnail it def looks likes a transformer
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Feb 26, 2018 01:38
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isn't that from Man of Steel?
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Feb 26, 2018 01:39
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Feb 26, 2018 01:44
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Don't gently caress with Ents.
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Feb 26, 2018 01:54
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Fortunately, its a movie set. https://www.youtube.com/watch?v=anEPwUKa4v0
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Feb 26, 2018 02:19
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ekuNNN posted:
Isn't that from Man of Steel?
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Feb 26, 2018 02:29
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There's no way he heated that on that fire.
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Feb 26, 2018 02:55
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The Lone Badger posted:There's no way he heated that on that fire. Why not? It's charcoal with a blower.
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Feb 26, 2018 02:59
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FatCow posted:Why not? It's charcoal with a blower. which has heated an inch square steel railroad spike to malleable while leaving the
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Feb 26, 2018 03:19
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shame on an IGA posted:which has heated an inch square steel railroad spike to malleable while leaving the Railroad spikes are poo poo metal that is easy to bend and work with. That is why they are used by hobbyist blacksmiths. Also I doubt the chair is unscathed but you can't actually see it since the fire is on top of it.
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Feb 26, 2018 03:23
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Cold starting a KA 26 is certainly something Something smoky Something (potentially) choppy
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Feb 26, 2018 03:31
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The whole thing is coals dripping through your unscathed chair
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Feb 26, 2018 03:32
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and finally age 18
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Feb 26, 2018 03:33
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The Lone Badger posted:There's no way he heated that on that fire. --- Just getting back to choppers for a tic, ask an Australian what a Erickson S-64 Skycrane and most would have no idea. Ask them what Elvis is, and you'd get a good number saying helicopter. quote:On December 27, 2001 "Elvis", which had arrived in Melbourne, was immediately deployed to Bankstown, New South Wales to help with fire fighting efforts in the Sydney region and was lauded for its role in helping to save almost 300 homes. It was also credited with helping save the lives of 14 firemen in the Burragorang Valley in New South Wales. 
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Feb 26, 2018 03:34
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https://www.youtube.com/watch?v=9XO1rE7v44g its this thing.
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Feb 26, 2018 03:35
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Potential BFF posted:Cold starting a KA 26 is certainly something That thing rules.
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Feb 26, 2018 03:36
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Potential BFF posted:Cold starting a KA 26 is certainly something i'm the perfect smoke ring at 0:34
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Feb 26, 2018 03:45
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Potential BFF posted:Cold starting a KA 26 is certainly something I was expecting the sound of a turbine, not a rotary. neat.
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Feb 26, 2018 03:55
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Wall Balls posted:and finally age 18 
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Feb 26, 2018 04:16
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Potential BFF posted:Cold starting a KA 26 is certainly something 1) How long was that thing parked there? 2) I had no idea one could Seafoam aircraft engines
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Feb 26, 2018 05:01
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I think it was parked there for the winter?
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Feb 26, 2018 05:04
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Why is directly in front "caution"?
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Feb 26, 2018 05:09
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because it's a helicopter and helicopters want everyone around them including the pilots dead
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Feb 26, 2018 05:12
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The blades are generally angled lower in the front a little to provide forward momentum along with lift. That, and if the chopper suddenly starts moving, it's most likely going to start moving forward.
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Feb 26, 2018 05:13
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Apparently that particular helicopter sat for a few months in early summer and they oiled up the engines prior to letting them sit, hence the smoke. I looked it up and the KA 26 runs on two 9 cylinder radial gasoline engines and the compressed air tanks are part of the standard starting procedure. I feel slightly more qualified to dust crops.
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Feb 26, 2018 05:26
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FuturePastNow posted:Why is directly in front "caution"? Because a lot of helicopters have what are called droop-stops to keep the very flexible blades in a plane at low startup speeds, but the stops are centrifugally deactivated at high speeds. If a droop stop fails at low speed, the stuff in the front is hosed. Most main rotors at center cyclic (basically the at-rest position of the stick) are canted forward, thus the lowest point of a main rotor blade's entire point of rotation (in relation to the ground) is the very nose of the aircraft. Thus when approaching a helo at speed get the operators attention, maintain the attention, and approach from the side.
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Feb 26, 2018 05:54
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Feb 26, 2018 09:34
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SelenicMartian posted:Don't you run out of knives all the time? Subscribe & Save.
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Feb 26, 2018 09:40
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Cable Guy posted:Anvil seemingly of a pillar design made from wood topped with a railway base-plate... checks out. Those things are legit fuckoff huge even when hovering over an oval 300 mtrs from your house. I’ve seen chinooks and other military stuff fairly close but a couple of years ago they where putting a fire out nearby and refilling the skycrane at a local oval. All you could see from the street was the helicopter filing a gap in the trees as it hovered. They bring the plane sized airbombers out here these days as well cause they can cover the state within an hour and have a 3 hr turn around. They don’t bother refilling them on the fly cause most of the dams close to the city are in pretty tight valleys so they fly them to an air force base in western Sydney instead.
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Feb 26, 2018 11:53
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http://www.latimes.com/local/lanow/la-me-sailor-killed-20180225-story.html I couldn't find the beginning of helicopterchat. If this story is what sparked it, ignore me. If not, I agree that helicopters lust for murder. Volcott fucked around with this message at 13:41 on Feb 26, 2018 |
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Feb 26, 2018 13:39
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https://i.imgur.com/uOww22f.mp4
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Feb 26, 2018 14:34
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Feb 26, 2018 16:24
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It's staring into my soul.
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Feb 26, 2018 17:21
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Potential BFF posted:Cold starting a KA 26 is certainly something How does a helicopter like this yaw?
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Feb 26, 2018 17:43
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Noted gun-idiot FPSRussia also managed the same thing a few times: https://i.imgur.com/jSx1EB9.mp4 And one time he also managed to have a piece of shrapnel slam into his cameraman's leg (note its trail down the center of the screen): https://i.imgur.com/8iQfUuq.mp4
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Feb 26, 2018 17:52
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Ah yes, the fake Russian dude from Georgia, USA.
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Feb 26, 2018 17:54
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-Zydeco- posted:Dual rotors add mechanical complexity by adding a second rotor, but lose the tail rotor which also gets rid of some complexity. Having two rotors also allows for mo lifting force without have to add larger diameter or more rotor blades on each spindle which might be advantageous. Tail rotors are also parasitic (NOTAR, too). It takes engine power to turn them, but they provide no lift, only countertorque. Dual rotor systems are using both rotors for lift. You also get some aerodynamic advantages. With a helicopter in hover, the advancing blade and the retreating blade both have the same airspeed, and lift is symmetric across the rotor disc. In forward flight, the advancing blade has a higher airspeed and the retreating blade has a lower one, so if the blade was rigid you'd have a marked dissymetry of lift at any forward speed. Articulated rotors allow the blades to move, so the advancing blade can assume a lower angle of attack (producing less lift) and the retreating blade a higher AoA (producing more) so that this tendency is canceled out. But that only works up to a point, eventually the retreating blade hits its critical AoA and stalls, which is potentially dangerous and makes the helicopter want to pitch up and roll towards the side of the retreating blade. Coaxial or intermeshing rotors have two rotor discs rotating in opposite directions, so an imbalance of lift is avoided; any loss/gain of lift from the advancing blade on one rotor is countered by the same thing from the advancing blade on the other rotor. The downside with intermeshing ones is that the lift vector isn't vertical, so they're not as efficient as coaxials or tandems. FuturePastNow posted:Why is directly in front "caution"? Just geometry. As the blades slow down they droop, and on a number of helicopters the closest the blade tips get to the ground is in the front. Here's a Chinook on the ground:  A 47's blades at full RPM aren't going to come low enough to hit you, but while they're spinning down or up that's a bad place to be. Phanatic fucked around with this message at 18:16 on Feb 26, 2018 |
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Feb 26, 2018 18:09
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haveblue posted:How does a helicopter like this yaw? You increase the blade pitch/angle of attack on one of the rotors, dropping the rotational balance and causing the helicopter to rotate in the direction you want.
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Feb 26, 2018 18:17
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Ornamental Dingbat posted:The only way to defeat Optimus Prime's vampire form 
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Feb 26, 2018 18:18
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C.M. Kruger posted:You increase the blade pitch/angle of attack on one of the rotors, dropping the rotational balance and causing the helicopter to rotate in the direction you want. This, but note rotational *speed* doesn't change. Rotor rpm is constant for both blades, it's torque that is no longer balanced between them because of the pitch change, so the aircraft yaws as the result of the torque differential.
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Feb 26, 2018 18:23
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