Design and Evaluation of a Side Force Generator Modification for the XBQM-106,Remotely Piloted Vehicle.

摘要

Wingtip and fuselage mounted side force generator (SFG) surfaces were designed and installed on the XBQM-106 remotely piloted vehicle (RPV) to enhance its lateral terminal response characteristics. These surfaces were sized and positioned in an attempt to keep the net rolling and yawing moments about the CG unchanged when the aircraft was side slipping. The FLEXSTAB digital computer system in conjunction with traditional hand calculated method were used to evaluate the RPV's stability, control, and time response characteristics. The time history responses to rudder, aileron, rudder/aileron, and wind gust inputs were generated and plotted by the FLEXSTAB program. From these plots it was determined that the SFG modification increased the yaw rate response 10.6% while decreasing the roll rate 10.7% and the side slip angle response 25.1%. The dutch roll damping was increased 4% and the DR period decreased 8%. The roll mode time to half amplitude increased 16.7% and the spiral stability increased for the modified vehicle. The longitudinal stability suffered a slight decrease due to the SFG. (Author)