bittesh pandey’s scientific contributions

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Publications (1)


Effect of Ground Proximity on the Regressive Lag Mode during Ground Resonance : An Experimental Study
  • Conference Paper

May 2019

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70 Reads

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1 Citation

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This paper studies aerodynamic effects of ground on regressive lag mode damping during ground resonance. The experimental investigation is performed on a scaled helicopter model built to simulate the ground resonance scenario. The study involves both stationary as well as dynamic (oscillating) ground conditions. Experiments are conducted by measuring lead-lag damping at different rotor speeds (in the ground resonance regime) for different collective inputs. Results show that ground and its dynamics have a significant effect on regressive lead-lag mode damping during ground resonance.

Citations (1)


... An experimental analysis on scaled down model of a helicopter with fuselage roll, pitch degrees of freedom and blade lead-lag degree of freedom was performed in laboratory environment. The schematic of the setup is shown in Fig. 3 and further details are given in Nair et al. (2019). The primary aim of the paper (Nair et al., 2019) was to understand effect of ground proximity on RLM damping and Fig. 3. Schematic of the experiment setup hence does not refer to observation of LCO. ...

Reference:

Ground resonance: nonlinear modeling and analysis
Effect of Ground Proximity on the Regressive Lag Mode during Ground Resonance : An Experimental Study
  • Citing Conference Paper
  • May 2019