VNE when torque is greater than 83%?

VNE when torque is greater than 83%?

• A. 60 kts
• B. 65 kts
• C. 70 kts
• D. 75 kts

Answer: (B)

When the engine is working hard, the rotor and drivetrain are under heavier load, so the safe airspeed limit must be lowered to prevent over-torque and loss of control. In this case, once torque exceeds 83%, the published envelope sets the maximum safe speed at 65 knots. Going faster than that would push you beyond the redline for that power level. The other speeds don’t match the required limit: 70 and 75 would exceed the allowed VNE at this torque, while 60 is within the limit but not the maximum safe speed specified for that condition.

When the engine is working hard, the rotor and drivetrain are under heavier load, so the safe airspeed limit must be lowered to prevent over-torque and loss of control. In this case, once torque exceeds 83%, the published envelope sets the maximum safe speed at 65 knots. Going faster than that would push you beyond the redline for that power level. The other speeds don’t match the required limit: 70 and 75 would exceed the allowed VNE at this torque, while 60 is within the limit but not the maximum safe speed specified for that condition.