Helicopter Lessons in 10 Minutes or Less: Dynamic Rollover Part 2
Introduction
- Presenter: Jacob
- Topic: Dynamic Rollover - Part 2
- Recommendation: Watch Part 1 for an understanding of static and dynamic rollover.
Key Concepts
- Dynamic Rollover: A potentially dangerous condition in helicopters that is easy to encounter.
Causes of Dynamic Rollover
- Pre-flight Check Issues
- Overlooked tie downs causing pivot points.
- Skid or Wheel Contact with Ground Objects
- Contact with obstacles (e.g., ground lights, fences, etc.) creating a pivot.
- Stuck Landing Gear
- Occurs in ice/mud causing a pivot point.
- Improper Takeoff and Landing Techniques
- Especially on slopes, can exceed critical angle.
- Cyclic Limits
- Using all cyclic input before landing can cause rollover.
Factors Affecting Dynamic Rollover
Physical Factors
- Rotor Thrust
- Main and tail rotor thrust, control inputs affect dynamics.
- Center of Gravity (CG)
- Affects thrust adjustments during takeoff/landing.
- Crosswind Component
- Influences rotor thrust, hitting cyclic stops.
- Ground Surface Conditions
- Loose gravel, sand, or slope can induce rollover.
Human Factors
- Inattentiveness
- Overlooking pre-flight checks and obstacles.
- Inexperience
- Not identifying the onset of rollover conditions.
- Incorrect Corrective Inputs
- Pulling collective during a rolling motion worsens the situation.
- Slow Inputs
- Delayed correction can result in continued roll.
- Loss of Visual Reference Points
- Misfocus leading to missed dynamic conditions.
Avoiding Dynamic Rollover
- Focus and Slow Down
- Treat all takeoffs and landings with caution.
- Count Landing Gear
- Verify all gear is clear during movements.
- Lower Collective in Suspected Rollover
- Most effective correction to decrease rolling motion.
Conclusion
- Recommendation: Always focus on the potential for dynamic rollover.
- Action: Lower collective as a primary corrective measure.
Note: Be attentive during flight, ensure proper technique, and respect environmental conditions to minimize risk.
- Ending Remarks: Thank you for watching. Hit like and subscribe for more lessons.
Safe Flying!