WORLD'S FASTEST HELICOPTER!!!!!!!!!!!!

[turbo]

My link

 

there you go fast guys. there is always someone faster.

[GmeisteR]

Wow, that is just awesome....one question though....Whats it use for anti-torque? the back rotors are facing the rear?

[Scarab]

With twin rotors there is no need for anti torque (tail rotor) The rear prop is a pusher prop to assist forward speed. I want one!

[Auto-Rotation-Nation]

With twin rotors there is no need for anti torque (tail rotor) The rear prop is a pusher prop to assist forward speed. I want one!

 

I'm afraid I have a nack for bringing back older threads but I found this to be related to the thread that I was about to start.

Here is my question:

I understand the lack for a tail rotor with the dual rotor design, but I want to know how this chopper that I have seen around the web appears to have no anti-torque system in place, but it still is most surely flying.

 

Here it is:

[Shaun]

 

I understand the lack for a tail rotor with the dual rotor design, but I want to know how this chopper that I have seen around the web appears to have no anti-torque system in place

 

 

The fan has a rudder behind it that directs air off to the side, like a swamp boat turning.

[crashed_05]

I'm afraid I have a nack for bringing back older threads but I found this to be related to the thread that I was about to start.

Here is my question:

I understand the lack for a tail rotor with the dual rotor design, but I want to know how this chopper that I have seen around the web appears to have no anti-torque system in place, but it still is most surely flying.

 

Here it is:

The thrust produced by the tail prop is vectored to the left by use of the ducting around it. The air being pushed left has an equal and opposite reation of the tail being pushed right.

[crashed_05]

Shaun, you beat me to it.

[X-filer]

Look at this big flap right behind the tail prop. Once the helicopter takes off torque turns the body to the right,but that big flap as you can see turned to the left a bit, so the air going from the prop pushes it so as the the whole tail to right stabilizing helicopter.... Hopefully I've written it understandable

 

...damn..we all wrote it the same minute...

Edited December 24, 2010 by X-filer

[palmfish]

I'm afraid I have a nack for bringing back older threads but I found this to be related to the thread that I was about to start.

Here is my question:

I understand the lack for a tail rotor with the dual rotor design, but I want to know how this chopper that I have seen around the web appears to have no anti-torque system in place, but it still is most surely flying.

 

Here it is:

 

It does have an anti-torque system. Look at the shroud behind the tail fan - it directs thrust to the side. Similar in concept to the MD 520N NOTAR...

 

[Wally]

If you listen, it's in a dive after 250 kts to hit 260.

How did Sikorsky beat the vibration problem encountered with this configuration previously?

Edited December 26, 2010 by Wally

[crashed_05]

If you listen, it's in a dive after 250 kts to hit 260.

How did Sikorsky beat the vibration problem encountered with this configuration previously?

I don't know, but I know the main rotor RPM actually slows down as the aircraft flies faster to reduce retreating blade stall.

 

Supposedly, the military already has their order in. Can't wait to see what this aircraft is capable of.

[AngelFire_91]

I don't know, but I know the main rotor RPM actually slows down as the aircraft flies faster to reduce retreating blade stall.

Huh?? How does slowing the M/R RPM reduce retreating blade stall? I thought that was the purpose of the "Wings" attatched to it. The blades probably are stalled but the "Wings" are keeping it flying and from rolling, and that's why they were running into vibration problems because the blades we flapping too much. Or maybe I'm wrong.. but I thought that's what it was.

[crashed_05]

Huh?? How does slowing the M/R RPM reduce retreating blade stall? I thought that was the purpose of the "Wings" attatched to it. The blades probably are stalled but the "Wings" are keeping it flying and from rolling, and that's why they were running into vibration problems because the blades we flapping too much. Or maybe I'm wrong.. but I thought that's what it was.

lol...well now that I think about it it doesn't make sense, does it? Here's an articl about it...

http://www.wired.co.uk/news/archive/2010-05/24/sikorsky-x2-helicopter-aims-at-record-speed

 

What does make sense though is having the M/R RPM slow down as airspeed increases to keep the advancing blade tips from reaching a supersonic relative airspeed.

Edited December 27, 2010 by crashed_05

[AngelFire_91]

What does make sense though is having the M/R RPM slow down as airspeed increases to keep the advancing blade tips from reaching a supersonic relative airspeed.

Touche! Lol, didn't think about that.