The　present　work　primarily　aims　to　study　the　dynamic　characteristics　of　the　rotating　beam　bundles　(RBB)　launch　system　under　the　action　of　intermittent　moving　loads.　Based　on　the　three-dimensional　first-order　shear　deformation　beam　theory　(3D-FSDBT)　and　Hamilton＇s　principle,　the　governing　equations　of　the　RBB　are　established,　while　the　coordinate　transformations,　wave　numbers　recombination,　and　artificial　virtual　coupling　techniques　are　introduced　to　enable　the　parallel　coupling　of　any　number　of　beams　to　match　the　method　of　reverberation-ray　matrix　(MRRM)　formulations.　Then,　the　motion　excitation　dependent　on　rotational　velocity　is　precisely　segmented　into　a　time-varying　square　wave　shock　function　with　discrete　characteristics　to　simulate　the　uninterrupted　loading　mechanism.　The　transient　displacements　of　the　system　under　the　coupling　of　centrifugal　effect　and　moving　excitation　are　computed　from　the　superposition　of　inhomogeneous　terms　and　Fourier　series　expansion,　which　achieves　an　analytical　dynamic　analysis　for　the　RBB　system.　Also,　the　predictive　accuracy　of　the　present　method　is　compared　with　the　finite　element　simulations　by　means　of　a　series　of　proposed　numerical　cases.　Finally,　the　effects　of　multiple　system　parameters　on　the　dynamic　responses　are　investigated　by　enumerating　different　loading　patterns,　rotational　velocities,　and　structural　forms.　©　2025　Elsevier　Ltd