Flight investigation of a V/STOL transport model with four pod-mounted lift fans /

"The investigation consisted of free-flight model tests in hovering and forward flight through the transition speed range up to the point where conversation would be made to wing-borne flight. Dynamic stability characteristics of the model were also calculated for correction with flight results. Because of a small static margin and speed instability, artificial damping in pitch was needed to obtain satisfactory pitch characteristics. No problem was experienced with roll or yaw through the transition speed range."--P. [i]."L-7469.""NASA TN D-6129.""February 1971."Includes bibliographical references (p. 17)."The investigation consisted of free-flight model tests in hovering and forward flight through the transition speed range up to the point where conversation would be made to wing-borne flight. Dynamic stability characteristics of the model were also calculated for correction with flight results. Because of a small static margin and speed instability, artificial damping in pitch was needed to obtain satisfactory pitch characteristics. No problem was experienced with roll or yaw through the transition speed range."--P. [i].Sponsored by the National Aeronautics and Space Administration (NASA); performed by the NASA Langley Research Center under work unit no. 721-01-11-06.Mode of access: Internet