The　purpose　of　the　present　investigation　is　to　reveal　the　saturation　phenomena　and　the　primary　resonance　of　a　rotating　pretwisted　laminated　composite　blade　subjected　to　a　subsonic　airflow　excitation　in　the　case　of　1:2　internal　resonance.　The　flexible　compressor　blade　is　treated　as　a　rotating　laminated　composite　cantilever　rectangular　plate　clamped　on　the　rigid　disk　with　the　pretwisted　and　the　preset　angles.　The　subsonic　air　flow　is　regarded　as　the　transverse　excitation　around　the　finite　length　of　the　plate.　The　subsonic　air　force　is　derived　by　using　Vortex　Lattice　method.　The　third-order　shear　deformation　plate　theory,　von　Karman　geometry　nonlinearity　and　Hamilton　principle　are　utilized　to　derive　the　nonlinear　partial　differential　governing　equations　of　motion　for　the　rotating　plate　subjected　to　the　subsonic　aerodynamic　force.　Chebyshev-Ritz　method　is　used　to　obtain　the　natural　frequencies　of　the　composite　cantilever　plate　with　varying　rotating　speed.　Using　Galerkin　method,　the　partial　differential　governing　equations　of　motion　is　discretized　into　a　two-degree-of-freedom　nonlinear　system.　The　nonlinear　torsional-bending　coupled　vibrations　with　1:2　internal　response　are　investigated　by　the　method　of　multiple　scales.　The　saturation　and　the　jumping　phenomena　between　the　torsional　vibration　mode　and　the　bending　vibration　mode　are　investigated　for　the　rotating　cantilever　plate.　Numerical　simulations　demonstrate　that　the　rotating　plate　exhibits　the　complicated　nonlinear　dynamic　behaviors　under　the　effect　of　the　excitation　detuning　parameter,　damping　parameter　and　stiffness　coupling　coefficients.　The　energy　transfer　phenomenon　is　observed　for　the　composite　cantilever　plate　under　the　subsonic　air　flow　force.　(C)　2020　Elsevier　Ltd.　All　rights　reserved.