Takeoff and Landing Performance[PDF]
Helicopters have the unique ability to take-off and land almost anywhere. It is the responsibility of the pilot to determine if a safe take-off and landing is possible and the availability of sufficient power.
In this chapter, the most common and basic methods are explained to create a general understanding.
Basic take-off performance calculation of a helicopter can be done in three steps.
Step-1: Cross-check actual and maximum allowable IGE/OGE gross weight.
Step-2: Cross-check predicted IGE/OGE hover torque and maximum torque available.
Step-3: Cross-check actual IGE hover torque and predicted IGE hover torque(in flight).
Landing calculations are not much different than take-off calculations. The same procedure is applied for the arrival airport conditions.
Step-1: Cross-check actual and maximum allowable IGE/OGE gross weight for landing aerodrome.
Step-2: Cross-check predicted IGE/OGE hover torque and maximum torque available for landing aerodrome.
Step-3: Apply a power check procedure in straight-and level for maximum torque available.
Conditions at take-off and landing sites may differ from what has been used for rotorcraft flight manual performance calculations. The power check will tell you if you have sufficient power to do the approach or take-off.
Power Check Prior to Take-Off
The initial power check prior to take-off is executed in hover. The calculated IGE hover power is compared with real hover power and the margin between calculated and real power is evaluated by pilots.
Power Check Prior to landing
Prior landing power check is executed in straight and level flight. Smooth collective is applied until reaching maximum power and the margin between calculated and real maximum power is evaluated by pilots.
- VID 522050 - <Creation>
DATE OF SUBMISSION
- 12:43, 23 February 2021
- This documentation is copyrighted as part of the intellectual property of the International Virtual Aviation Organisation.
- The content of this documentation is intended for aviation simulation only and must not be used for real aviation operations.