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What Is a Helicopter Swashplate? How a Helicopter Swashplate Works
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- เผยแพร่เมื่อ 15 ส.ค. 2024
- This video describes what a helicopter swashplate is and how the swashplate transfers control input to the rotor disk, using R44 and R22 helicopters as examples. APOLOGIES for the SHAKEY camera work!
See notes, tips, related videos & links below.
▬▬▬| Video Content |▬▬▬
00:00 START
00:13 Introduction
00:39 Looking at the swashplate components on a helicopter
01:55 How the swashplate moved by the controls
03:00 More Information
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Thank you, explanations were clearly understandable and video showing the actual swashplate in motion by the cyclic and collective made for a superb video and thorough understanding of this part.
Thank you - glad it helped.
Have an exam on a helicopter's flight dynamics in just under a month so I thought it would be very useful to see a vid of the swashplate, or "piatto oscillante" as we say in Italy. Great video
Glad it was helpful! How did the exam go?
Wou keren sir helikopter canggih !
Thank you
Fascinating. And our lives depends on that these tiny rods will manage to withstand the forces when changing the attack angle of the rotor blades several times per second!
LOL yep!
Thank you for this very informative video.
You are very welcome
thank you for the video !
You are welcome!
This video is so useful as i am a modern babft player
Although people build boats
The pro player community Refuses to build boats including me.
I also like helicopters
LOL Ok
Thank you for all of these.
You are welcome
Thanks, it just clicked.
Glad to have helped!
VERY informative. I agree with Mr. Leonard in that the cameraman either needs a drink or should see a doctor about his Parkinsons.
LOL yes unfortunately that was without a tripod or stabilized camera
great video man!!
Glad you liked it!
Hi I am from India Amazing video
Thank you so much.
An idea I've had even for your other videos is it could be helpful if a slit screen between the inner part of the helicopter and the outer part of the helicopter. So we can see the swash plate tilt as you move the cyclic.
Worth considering . . . .
Oh yes! Version 2.0!
Thanks a lot
Most welcome
Well explained sir
Thanks and welcome
Huh. So that's how helicopters control their movement. That's fairly brilliant
I agree!
It motivated me..........
Good - go take a demo flight
Very good
Thank you
I wonder what would happen if a helicopter is running on the ground, collective full down and keep it down, you move the cyclic forward, back, left and right, will the aircraft tip over?
No, if there is not enough lift being generated
I'm you are big fan
Thank you
If you take a ruller and balance on your finger then tilt it one side it replicate a cyclic input
Hmmm, I can't picture it
Can someone help me out here. If you push forward on the cyclic, the 12 oclock position becomes lowest pitch position, and the 6 oclock becomes highest pitch (correct me if i'm wrong). So with gyroscopic precession, wouldn't that mean that the biggest angle of attack being at 6 oclock, the resultant force is 90 degrees away at the 9 oclock ... meaning it would tilt the rotor disc left? What am i missing here?
Close, but 90 degrees off. :-) Push the cyclic control forward and the blade position with the lowest pitch will be about 90 degrees BEFORE the front of the helicopter (so left or right side, depending on direction of main rotor rotation) and the force will be 'felt' about 90 degrees later, causing the front of the main rotor disc to move down, tilting the lift to the front, causing the helicopter to move forward... This is a simplified version, but you get the idea I hope?
very good
gyroscopic forces is e.g. to the front with cyclic it tells the rotor 90 degrees before. sovwhat it means going forward e.g. the blade gets the instruction from swashplate 90degree before its to the front.
Yeah
Nice
Thank you
Show gostei mesmo abraço. manda mais vídeos falando sobre o rotor principal.
OK
This video fails to point out that irrespective of the number of rotor blades on the head, the lower fixed part of the swash plate always has three control rods from the collective and cyclic control rods. This is because only three points in space are required to define a plane, i.e the angle of the swash plate. It is normally the case that fore and aft movement of the cyclic stick controls the single rod at the front of the swash plate, moving it up and down, whilst the two rods at the side remain stationary. Lateral movement of the cyclic control leaves the front rod stationary, whilst moving the side rods up and down in opposition, causing the swash plate to tilt to the left or right. There is some displacement of the input control rods from the true front and side positions to allow for gyroscopic precession effect, but it is not 90 degrees. It is less than 20 degrees, and varies on different aircraft. The swashplate is the most common method of transferring the control inputs to the rotating head, but there are other systems in use. The Westland (now Leonardo) designed Lynx and all its derivatives use a system known as an internal spider system, inside the hollow main rotor shaft. This was originally used on the Saunders Roe Skeeter in the 1950’s. The earlier Bristol Sycamore and Belvedere had a similar system with the spider above the rotor head, controlled by a linkage in the hollow rotor shaft. The Piasecki “ Flying Banana” had a different system again. Examples of all these can be seen at The Helicopter Museum at Weston Super Mare in North Somerset, England.
Thank you Alan - great information
Helicopter Training Videos Thanks for your response to my earlier reply. I spent many years of my working life in helicopter engineering, holding multi trade CAA licences, following military service in the Fleet Air Arm. I now volunteer at the museum at Weston as restoration engineer and tour guide. I am definitely a self confessed helicopter enthusiast, and never tire of taking technical engineering tours of the many aircraft in our great museum, to enlighten visitors in the workings of helicopter rotor and flight control systems. Keep burning and turning.
@@alanwhitfield1907
very good information we learn
Good
what type of bearing is used which allows the axial inclination
Not 100% sure what you mean
Thanks a million times.
You are welcome
It was Useful. Thanks
The swash plate is a device that allows vertical motion to be transferred to rotary motion... The cyclic and collective controls activate the lower portion (non-revolving) of the swash plate and the second part of the swash plate (rotating upper part) is connected by push/pull rods to the blades, allowing them to move the leading edge up or down thereby increasing angle of attack (like a fixed wing aircraft rotating at take-off speed) and transition from weight on skids to weight on airfoil. The cyclic dictates the "tip path plane" or shallow "dish" that has materialized from "flat" because of no weight on the airfoils to a shallow dish, because of "coning"... That happens because the tips of the blades are bending up like the wing tips of a Boeing or Airbus wing tips as the aircraft rotates, switching from weight-on-wheels to weight-on-wings. (Next time you fly, look out the window on take-off to visually understand...). At any rate, the helicopter hangs vertically, and at right angles to horizontal in a no wind condition because of gravity, below the turning disk... To transition to forward flight, side or aft flight, the tip-path--plane, through use of the cyclic, will dictate which angle from perpendicular you wish to go.... Hope this clears the waters a little.... Good flight...!
i knew it is not that simple !!! xD
what do you mean. Is this video an oversimplification?
Was this filmed during an earthquake?
Yep, and the cameraman had Parkinson's... Yeah next version will fix this!
Alright, it is understood the operation of swashplate but can you tell how much angle will be changed of the blade when cyclic is 2degree forward. Thanks
Sorry I do not know that. And unless you are a Robinson Helicopter Engineer, not sure anyone else will either...
And i thought flybarless was just an rc helicopter thing. It's pretty cool to see a real one.
What is flybarless?
Flybarless is just a scaled-down replica of the mechanical system you showed in this video. The alternative, a flybar, is a mechanical stability aid used on RC-Scale helis. Generally as you scale down in size you have an effective acceleration in maneuvering dynamics, and without either electronic or mechanical stability aids the scale sized helis are extremely difficult to maintain control of.@@HelicopterTrainingVideos
A failure in the swashplate is catastrophic?
Most likely. Important preflight item.
@@HelicopterTrainingVideos
Any idea how often does it require to be disassembled and fully examined? (ex: ultrasound inspection)
thanks. Sr
fief
So with the collective all the way up and the cyclic all the way forward ypu would get max speed I presume, bc it's increased the pitch to max level and the swashplate is pulling g you forward at its highest potential
Unfortunately you would run out of power and the RPM would decay, but I see your idea.
so it is not rigged to compensate for gyroscopic procession?
The movement of the swashplate follows the controls - forward cyclic tilts the swashplate forward. The upper swashplate connects to the pitch link rods and it is how those rods connect to the blade pitch horns that puts that 90 degree compensation in.
***** I apologize for being 'that guy', but...it's precession. Thx.
7055460151
spf
Late reply but yes it actually is. When the blades are 90° to the helicopter (sideways like an airplane) and you push the cyclic forward, it will seem like one blade on the aeleron (roll axis) gains more lift while the other side loses lift. Without gyroscopic precession this would cause the helicopter to roll. However due to the 90° delay in a force applied to a gyroscope (the rotor itself in this case) the heli will tilt forward and in fact the cyclic will respond exactly as you'd expect though the swash acts 90° early. 😉
good job
great
very interesting, pity the poor quality 'wild' sound and the eyeball hurting brutal camera work. other than that showing how the blades move via controls was great.
Yes I hear you - one I would like to redo.
0:58 what happens if a pitch link fails during flight? - what is the effect?
Loss of control and probably a fatal crash. See this example: aerossurance.com/helicopters/pitch-link-fatal-r44-accident/#:~:text=The%20National%20Transportation%20Safety%20Board,a%20subsequent%20loss%20of%20control.
Death
i finally get it!
Safi sana
Awesome!
what is actuator in helicopter and his job
and i am a big fan of u
Thank you!
Helicapter moving up and down
Yep
yes
please use a tripod when zooming in....great videos but zooming in made me cross- eyed! 😨😲😩
Yeah it makes me wince to see and hear the equipment I was using back then...
impressão ou a parada ali esta amarrado com arame?
Tied with wire?
I got seasick watching this vid laying in my bed.
Yeah sorry...
I have a dream to invite a small helicopter for farmers the helicopter must able to pick 50liters of water and a man.. please give me an idea or how to manufacturer it plz
I'm sorry but I don't know how to build a helicopter from scratch.
IGUALSINHO O MEU AEROMODELO, BRASIL OK.
Sorry?
Sir... Please can ur help me? Sr
Sure, what's up?
sir Marko helicopter banana h my help
Chairanji Saini hahahahahha. Ye sahunk pehle se tha ya ye video dekh k jaaga 😂😂😂😂😂😂😂😂😂😂
Helicopter banana?
If just one of those tiny pitch links comes out of joint, your heli will turn upside down and you can kiss the world goodbye. There's no backup link. That's what I don't like about helicopters. All those joints must be working for you to remain in the air, wheras in a plane, you can glide to some extent if something goes wrong so you have some hope.
+robaxa A helicopter is not going to flip upside down from a failed pitch link.
"Flip upside down" is just an exaggerated term. I really mean you will lose control of the helicopter in all three rotational axes because you can't control the pitch of one blade during each cycle anymore.so you can't balance the helicopter in the air.
+robaxa There are periodic inspections of all the bearings on the main rotor head to ensure that the joints won't come loose, and before they even come close to being a danger they are replaced with new ones.
how many bangladesh price six silinder air engine... please talk me bro..
No idea. I don't sell engines.
Hello sir
Hello
Sir can ur give me what's up number pleass
@@vysakhanvysakhan6609 Sorry matey, but I don't give my number out to people on TH-cam who I haven't met. If you want help with flight training in the US - try contacting one of the flight schools, like Leading Edge Aviation in Bend Oregon.
Sir. I'm Trying to make a 1 copeter but i was something duts.... can ur clearing? Plss
i whant hilicopter engin who mene dolar ?
I want a helicopter engine. How many dollars?
Depends on the size and the performance of the engine. Still I don't recommend you buying an engine. Engines are heavy, loud and potentially dangerous to use, especially for undereducated children.
md asgas ansaru
Sorry?
For goodness sake, a brilliant video ruined by a crap camera, I do camera work, and you have to remember that your actions with the camera must reflect that which the human eye sees
I completely agree - one of the videos I would love to redo when I have time (and a tripod!).