Ash Wyllie
January 14th 07, 01:33 AM
Richard Riley opined
>I've been working with a conventionally configured helicopter for a
>few months and this suddenly started eating my brain.
>In a 2 rotor helicopter you are countering the torque of one rotor
>with the other rotor. But how do you do a pedal turn? In a coaxial
>I'd think you'd increase the pitch of once set of blades and decrease
>the other. But what do you do in a tandem, like a CH-46? Increase
>the pitch, you get more torque, but you also get more lift, so the
>aircraft would move forward or backward -
>Any helo pilots out there that can set me straight?
Differential roll ;).
You tilt (say) the front rotor disk to the left, and the other to the right. The
helo then pivots counter-clockwise.
-ash
Cthulhu in 2007!
Why wait for nature?
>I've been working with a conventionally configured helicopter for a
>few months and this suddenly started eating my brain.
>In a 2 rotor helicopter you are countering the torque of one rotor
>with the other rotor. But how do you do a pedal turn? In a coaxial
>I'd think you'd increase the pitch of once set of blades and decrease
>the other. But what do you do in a tandem, like a CH-46? Increase
>the pitch, you get more torque, but you also get more lift, so the
>aircraft would move forward or backward -
>Any helo pilots out there that can set me straight?
Differential roll ;).
You tilt (say) the front rotor disk to the left, and the other to the right. The
helo then pivots counter-clockwise.
-ash
Cthulhu in 2007!
Why wait for nature?