import ross as rs
rotor = rs.rotor_example() # ready-to-use rotor for testing
modal = rotor.run_modal(speed=0)
print(modal.wn[:4]) # first 4 natural frequencies (rad/s)Core pattern: Elements → rs.Rotor(shafts, disks, bearings) → rotor.run_*() → Results with .plot_*() methods.
Units: All SI — speeds in rad/s, stiffness in N/m, damping in N·s/m, unbalance in kg·m. Use rs.Q_(value, "unit") to convert.
Analysis methods: run_modal, run_campbell, run_critical_speed, run_static, run_unbalance_response, run_forced_response, run_freq_response, run_time_response, run_ucs, run_level1, run_rubbing, run_crack, run_misalignment.
See CLAUDE.md for the full API reference table, and ross/agent_skills/ross/ for complete analysis recipes. See CLAUDE.md ## Development for build, test, lint, and code conventions.