All_In
Gold Supporter
- Joined
- Apr 21, 2008
- Messages
- 16,105
- Location
- San Diego, CA. USA
- Aircraft
- Airgyro AG915 Centurian, Aviomania G1sb
- Total Flight Time
- Gyroplane 70Hrs, not sure over 10,000+ logged FW, 260+ ultralights, sailplane, hang-gliders
Yo Dan
Just so happens I writing the Coriolis effect in PRA's new gyro pilot course.
This may help explain it.
Coriolis Effect, which is sometimes referred to as con-servation of angular momentum, might be compared to spinning skaters. When they extend their arms, their rotation slows down because the center of mass moves farther from the axis of rotation. When their arms are retracted, the rotation speeds up because the center of mass moves closer to the axis of rotation.
When a rotor blade flaps upward, the center of mass of that blade moves closer to the axis of rotation and blade acceleration takes place in order to conserve angular momentum. Conversely, when that blade flaps down-ward, its center of mass moves further from the axis of rotation and blade deceleration takes place. [Figure 3-5] Keep in mind that due to coning, a rotor blade will not flap below a plane passing through the rotor hub and perpendicular to the axis of rotation. The acceleration and deceleration actions of the rotor blades are absorbed by either dampers or the blade structure itself, depend-ing upon the design of the rotor system.
Just so happens I writing the Coriolis effect in PRA's new gyro pilot course.
This may help explain it.
Coriolis Effect, which is sometimes referred to as con-servation of angular momentum, might be compared to spinning skaters. When they extend their arms, their rotation slows down because the center of mass moves farther from the axis of rotation. When their arms are retracted, the rotation speeds up because the center of mass moves closer to the axis of rotation.
When a rotor blade flaps upward, the center of mass of that blade moves closer to the axis of rotation and blade acceleration takes place in order to conserve angular momentum. Conversely, when that blade flaps down-ward, its center of mass moves further from the axis of rotation and blade deceleration takes place. [Figure 3-5] Keep in mind that due to coning, a rotor blade will not flap below a plane passing through the rotor hub and perpendicular to the axis of rotation. The acceleration and deceleration actions of the rotor blades are absorbed by either dampers or the blade structure itself, depend-ing upon the design of the rotor system.