TANDEM HELICOPTER LONGITUDINAL STABILITY AND CONTROL Open PDF Document Details Document Type Technical Report Publication Date Jun 01, 1953 Accession Number AD0015832 Entities People John G. Gebhard Organizations Princeton University Tags DTIC Thesaurus Topics Aeronautical Engineering Aircrafts Analog Computers Blades Boundaries Coefficients Control Sticks Differential Equations Equations Equations Of Motion Flight Flight Paths Helicopters Level Flight Sea Level Steady State Transfer Functions