Rotor blade design provides for aeroelastic layout and eigenfrequency spectrum that ensures low alternating loads (blade deformation).[^1] Rotor blade aeroelastic design must provide for a low level of alternating loads.[^1] Mass elastic configurations of cross-sections can be used to predict the eigenvalues of the loads and the flutter boundaries.[^1] The blade root is the part of the blade that is attached to the rotor head.[^2] The placement of the flapping hinge offset affects the agility of the helicopter.[^3]
Adjusting the number of blades can affect the vibration level.[^3] 5-bladed propellers have a 70% reduction in air loads due to the shifting of the essential frequencies from 3,4,5/rev with 4-bladed rotors to 4,5,6/rev with 5-blades.[^3] The placement of the 2nd flap bending mode and the 2nd drive train mode is less critical.[^3] Humans are less sensitive to the increased frequency of the 5-bladed rotors.[^3]
[[Kamov Helicopters]] – created rotor blades for helicopters
[[TSAGI]] – advanced rotor blade design
[[Ka-50 Blade Design]]
[[Retreating Blade Stall]]
[[Elastic Blade Equations of Motion]]
[[H145 Rotor Blades]]
[[Delamination]] – can cause an imbalance in the rotor system
[[Bearingless Main Rotor]]
- KamovCompositeBlades[^1]
- AIRRESCUEHow[^2]
- emmerlingH145BEARINGLESSMAIN2019[^3]