NASA STI Repository (National Aeronautics and Space Administration) · 1974 · 24 citations · 3 references
Open access
EngineeringAerospace EngineeringMechanical EngineeringFlight DynamicsFlight MechanicsStructural DynamicsAircraft ControlAircraft StabilityControl TheoryStabilityStability CriteriaSuspension SystemsControl Law DesignFinsFlight StabilityLinear ControlLoad Sling DesignRotorcraft ControlRotorcraft Flight DynamicsRotorcraft Stability
The effect of geometric and aerodynamic characteristics on the stability of the lateral degrees of freedom of a typical helicopter sling load is examined. The feasibility of stabilizing the suspended load by controllable fins was also studied. Linear control theory was applied to the design of a simple control law that stabilized the load over a wide range of helicopter airspeeds.
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