HELICOPTER HUB LOADS
With reference to the main rotor hub loads in rotating system and vibratory hub loads in non-rotating system. There seems to be no first cut closed form formulas or empirical in nature but rather elaborate CAMRAD/aeroelastic analysis which requires substantial cost and time. I want to know whether any text book/literature which can give approx/first cut from fundamentals about the nature of hub loads. I have seen quite a few books like harris/Johnson which give some insight into hub loads.
Regards
Jagannath