Johnson Aeronautics offers engineering services to the aerospace industry, specializing in analysis of helicopters, tiltrotors, and rotorcraft.
CAMRAD II is the principal
software product of Johnson Aeronautics. CAMRAD II can calculate
the performance, loads, vibration, response, and stability of
rotorcraft, including helicopters and tiltrotors; as well as wind
turbines, propellers, and fixed wing aircraft.
Rotorcraft Aeromechanics by Wayne Johnson: Errata