A helicopter that is overloaded will result in:
Helicopter performance can be described as the difference the power required and the power available, both of which vary with ambient conditions and all up weight.
Overloading will have serious impact on the helicopter performance possibly leading to fatal consequences. The effects of overloading are:
- Exceedance of structural limitations.
- Take-off and safety speeds will be increased.
- Take-off and landing distances will be increased.
- Reduced: acceleration, Rate of climb, ceiling, range, and endurance.
- Reduced maneuverability, braking and power margins.
- Rotor disc will be overloaded.
- Retreating blade stall will occur at lower IAS.
- Autorotation capability reduced with possible inability to flare.
NOTE:
For questions regarding performance and helicopter loading, it's advised to be familiar with CAP 758. From the performance charts in CAP 758, you can extract most of the information with different Take-Off Masses (TOM), such as Rate Of Climb, Hover performance, Ceiling level.
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