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WonderingMindfully
Приєднався 16 гру 2008
Helicopter controls - swashplate motion
Just a little demonstration of the effects of helicopter control movement on swashplate position.
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Відео
Skeletal Muscle Demo
Переглядів 45 тис.14 років тому
Demonstration of some of the biochemical mechanisms involved in skeletal muscle contraction. Calcium ions bind to troponin causing a change in shape of tropomyosin. This exposes myosin binding protein on actin. If a nearby myosin head is already cocked, binding to the myosin binding molecule triggers contraction of the myosin head, pulling the actin molecule. ATP binding to the contracted myosi...
New Swashplate Demo
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This movie is an update of the older swashplate movie I shared. The view from the rotortip is new!
Helicopter swashplate function
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Animation demonstrating swashplate function in most helicopters. No narration (yet). For the uninitiated, the swashplate is the mechanical device that transfers the pilots input (the cyclic stick) to the spinning rotor. It's tricky because the cyclic stick doesn't usually directly tilt the rotor mast, but causes the rotor disk to fly to the desired tilt. That's why, in the animation, when there...
Handwork
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I suppose there's a story behind this one. Perhaps someone will write it.....
White-sided dolphin earbone (periotic) structures
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This animation demonstrates the interior structure of the earbone (periotic bone) of a Pacific White-sided dolphin. Although this animation gives the illusion that the bone is merely a hollow shell, it is actually very hard solid bone (with a density similar to teeth) containing the hollow tubular structures shown (cochlea, semicircular canals, various ducts and vestibules). This digital recons...
IgeOgeHover
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Just a little effort to show the changing airflows occuring in In Ground Effect (IGE) and Out of Ground Effect (OGE) hovering in helicopters.
LowGDoom
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Simple illustration of possible consequence of low G pushover followed by mast bumping and destruction of helicopter.
Dynamic Rollover Demo
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A work in progress demonstrating some of the factors leading to dynamic rollover in helicopters.
This is actual footage of my dads crash. Rip
That's why it's important to slowly get light on the skids, do your hover checks n then lift off. Regardless of how the dynamic roll over is created, be quick to lower the collective. That is what will save your ass and the helicopter. Ground resonance is a totally different animal. To recover from that you quickly raise the collective to lift off before the helicopter self destructs n disintegrates...😳
Бред . Вынос рычага поворота лопасти с опережением в 90 градусов ! Это шутка ?
Two words... Gyroscopic precession
@@WonderingMindfully Именно этот несущий винт не прецессирует . Он управляется аэродинамически посредством циклического изменения угла установки лопастей . Это видно из схемы расположения рычагов на которые воздействует тарелка автомата перекоса через вертикальные толкатели .
why is it so cute though?
Thank you
ua-cam.com/video/Zx_51w6G_jo/v-deo.html
HELIKOPTER HELIKOPTER
Good explanation. Always a sad outcome.
Very educative… thanks …….. if there’s another animation of LTE…. 🙏🚁🚁🙏
Very educative… thanks …….. if there’s another animation of LTE…. 🙏🚁🚁🙏
cyclic and collective
i have video for you to understand this a bit more clear
Ho Lee Phuc
Wi Tu Lo
it was "Sum Dum Ho" that said it.
Thanks!
Thank you...it's makes me to understand about swash Plate...keep doing like this
هلو
هلو
هلو
Now I know more about cyclic and collective 👍
Thank you people for good teaching.
thanks. very helpful.
send mor
I like it
Ok
интересная штука.
nice
Sourove Das not nice
@@abdollahebady1578 nice
Wear are shopping helicopter fane
My contri india
nice
Gevmi All fetygns Vedio
You didn't compensate for gyroscopic precession though
If you look a bit closer, you'll see that the pitch horns in this animation are designed so that the pitch input to the rotor blade from the swash plate occurs 90 degrees in advance of the blade position, allowing for the effects of gyroscopic precession.
Oh, I see it now, my bad.
Thanks for this video, super helpful in explaining the concept.
this seems to happen a lot on my RC Blade helicopters ...I have learned to pop them up into the air quicker.....I guess it's not the same with the real ones.....
This is one of the many reasons that coaxial rotor heads are better.
What software did you use to simulate this?
Blender3D
+WonderingMindfully Thanks! So, you did not use any physics engine here, right?
Right.
I like your video. Thank you.
share in fb helicopter safety
Much muscle! Such skeleton! 10/10 would watch again
Thank you so much for sharing. I just started taking lessons in an R-22. The Robinson R-22 controls are VERY touchy. I see lots of Dynamic roll overs, But this sums it up Very clearly!
thanks for this video, especially w/o air resistance. It threw me off the other day when I saw an Enstrom hovering with rotors tilting left to counteract Tail Rotor drift. Thought it would be pitching the nose backwards, but this video helps put the swashplate functions of a rotor system in relation to aerodynamics. Retreating brain stall throws simple understandings out.
What's the deal with E.T.
Oops. My comment a few months ago about not showing the gyroscopic precession bit was in error. A case of thinking I was wrong, then discovering I was mistaken. Wish that happened more often. The pitch arms transfer swash plate tilt 90 degrees in advance of where the swash plate is tilting. So the swash plate and rotor disk tilt, in air,i n parallel.
It's not gyroscopic precession. When you apply cyclic to the rotor, it can't instantly apply lift so the lift gets applied out of phase of the pitch change. If you read actual textbooks on rotor wing design, they will tell you this (yes it is repeated all over that it's gyroscopic precession but it is wrong). The actual offset varies between around 70 degrees to 90 degrees depending on a bunch of factors (this proves that it's not gyroscopic precession because gyroscopic precession is always exactly 90 degrees and the phase offset of a helicopter rotor varies). Also the rotor does not "tilt", or rather, tilting is not what cases direction change, the difference in lift across the rotor disk from cyclic pitch control is what causes it to move in a particular direction. The aircraft leaning in the direction of flight is a symptom of this, it is not the cause of the directional control.
One thing that this simple video doesn't show is very important and I may modify the video to show it. It is gyroscopic precession. Because of gyroscopic precession, forces applied to the spinning rotor result in movement 90 degrees later in the rotation. So in reality, pushing the cyclic forward tips the swashplate to the right, increasing pitch on the rotor to the left of the aircraft and decreasing it to the right. The increase lifting force to the left of the aircraft is expressed in tipping the rotor plane forward. Helicopters are rigged to take this into account so when you press the cyclic in any direction, the rotor disk flies into a position with a tilt in that direction. I hope this makes sense.
surely that 90 degrees is a product of the mechanics/aerodynamics of the blades than any gyroscopic procession. Because the direction of blade movement is not in phase with the pitch of the blades.
The pitch arm from the blade is attached to the swashplate 90 degrees ahead. So if you push the cyclic forward the swashplate will tilt forward and the blade pitch is increased on the left side. So the tip path plane will tilt forward and your thrust vector will tilt forward.Otherwise it would be weird, why would you engineer controls that are not intuitive. Source: "Helicopter Performance, Stability and Control" R.W. Prouty PS: Trust me I'm an engineer :D
You're right. I though my animation was built wrong, but I was mistaken. But if you look around at the variety of swash plate designs out there, you'll see that there are some pretty non-intuitive setups. I tried to make mine as simple as possible.
thankyou! 5 am and i finally get it through my thick skull!
good to know:-D
Beautifulness. Thank You.
It was just proving that space ships are not affected by OGE. Probably proving the point that, while Martians exist, they tend to avoid those helicopters which are in the process of operating IGE.
yOooYoOOO LOLLLLLL
Yo yo... Amazing video clip. My good friend was once obese. He went from 279 lbs of fat into 205lbs of genuine muscle. Everybody was in shock. I just registered myself as I wanna beef up. He made use of the Muscle Building Bible (Search on Google)...
A little late, but if you hold the space bar, the video plays sorta in slow motion
The animations(s) were build with Blender 3D and knitted together side by side using Quicktime 7 Pro on a Mac
WonderingMindfully 998
Μιχαήλ Παπαδημητρίου Hi
Μιχαήλ Παπαδημητρίου hi
What do you use to create your animations?
Aaron Baker nothing man
nice eeeeeee dro