Helicopter response to atmospheric turbulenceA new time-domain method for simulating cyclostationary turbulence as seen by a translating and rotating blade element has recently been developed for the case of one-dimensional spectral distribution. This paper extends the simulation method to the cases of two- and three-dimensional spectral distributions and presents validation results for the two-dimensional case. The statistics of an isolated rigid blade flapping response to turbulence are computed using a two-dimensional spectral representation of the von Karman turbulence model, and the results are compared with those obtained using the conventional space-fixed turbulence analysis. The new turbulence simulation method is used for predicting the Black Hawk helicopter response to atmospheric turbulence.
Document ID
19930051990
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Riaz, J. (NASA Ames Research Center Moffett Field, CA, United States)
Prasad, J. V. R. (NASA Ames Research Center Moffett Field, CA, United States)
Schrage, D. P. (Georgia Inst. of Technology Atlanta, United States)
Gaonkar, G. H. (Florida Atlantic Univ. Boca Raton, United States)