Single Main Rotor Helicopter Animation

Animation of a single main rotor and tail rotor helicopter showing swashplate control of the rotors and the reduction gearing from the two turboshaft engines

[CharlesHuse]

Part of what they are not showing here is that at the coupling between each gas turbine engine and the drivetrain is a device referred to as a 1-way bearing. It looks like a slightly modified roller bearing. When rotational force is applied in one direction the rollers grab and rotate the drive train. When that rotational force is removed, the drive train continues to function. This is what give a turbine helicopter the ability to autorotate in the event of an engine loss. This is also how a multi-engine helicopter of the design shown can start each engine independently and not destroy the other engine or the drivetrain in the process. The 1-way bearing is at least how Airbus/Aerospatiale solves the problem. I'm pretty sure this is what Bell, Sikorsky and others do as well. On multi-engine Airbus helicopters, there is a control on the dash that once both engines are up and running, the pilot turns a knob and balances the N1 and N2 outputs (Engine 1 and Engine 2) which helps synchronize everything to the R1 speed (rotor). For those who don't know, most helicopters have a gauge on the dash with needles labeled N and R. N indicates engine speed, R indicated rotor speed. On a single engine helo, turbine or reciprocating (in the case of a Bell 47 or an R22/R44) when the 2 needles line up, then the engine and rotore speeds are synchronized and the aircraft is ready for takeoff.

[skauffman]

Absolutely beautiful animation; thank you for sharing it.

[akilabandara]

i searched those topic in my childhood, but it found today...thankyou mr.bzig❤

[alexopweg]

Unbelievable how clearly is explained ❤❤❤❤❤

[sky]

I'm curious of why there is a planetary gear box. Maybe for main shaft stability? I don't see any other purpose. Great animation. Thanks for sharing.

[brodricj]

The sun/planet gear mechanism in the main gear box (as shown in this video animation) is very cleaver engineering.

[eduardooliver]

Obrigado pelo vídeo! Deu pra entender bem como funciona o movimento das asas rotativas e do rotor de calda!

[Good_BorisAV]

_Thanks!_
_Very interesting and informative!_ 🇷🇺

[dash]

Just look at all those single point failure opportunities.
Been flying fixed for 38 years, but I will not get in any kind of traditional rotory wing.
However, I’d consider a Jetson One if it has a BRS.

[samspade]

Outstanding video! It would be good to highlight the swashplate and name control inputs like FORWARD, HOVER, LEFT, ect. Good job otherwise.

[learnengineeringinurdu]

I understand all its systems but one thing I don't understand is that its wings are what they are but how they are neutralized while the engine is running and often we see that the wings are standing still. but engine starts

[buditarigangersang]

Yea wou nice technisi gearbog whasplate and blades kreatif keren sir!

[moisescrespo]

Muy bueno. No entiendo como puede soportar tanta velocidad tantos engranajes.

[leiag]

Helicopters are the coolest flying machines ever invented

[mehmetkirisci]

süper eğitici kim yaptıysa ellerine sağlık

[WebberAerialImaging]

Great animation but ought not the tail rotor be on the other side to counteract that particular main rotor direction?
This design would be more suspectable to LTE.

[pintchigawza]

What i dont understand is I hear the engine starts but rotor doesn't rotate only after a while. How that can be possible?

[nguyenminh]

Loại động cơ này sao không dùng cho siêu xe ???

[WhyAreYouMakingMeSad]

Это красиво и страшно одновременно.
It's beautiful and scary at the same time

[lil----lil]

Is it possible to calculate HOW MUCH power is lost through all that gears? Say a _direct drive_ is 100% power (shaft straight to blade) but reduced everytime when paired with a gear. Anyone?