Morgans[_2_]
January 12th 07, 07:04 AM
"Richard Riley" > wrote in message
...
> 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?
Increase pitch for the portion of the rotation that the direction of blade
travel would "drag" the assembly sideways.
--
Jim in NC
...
> 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?
Increase pitch for the portion of the rotation that the direction of blade
travel would "drag" the assembly sideways.
--
Jim in NC