Prediction Of Forces And Moments For Flight Vehicle Control Effectors Part 2 An Analysis Of Delta Wing Aerodynamic Control Effectiveness In Ground Effect

Scientific and Technical Aerospace Reports

Aeronautical Engineering: A Cumulative Index to a Continuing Bibliography (supplement 261)

Prediction of Forces and Moments for Flight Vehicle Control Effectors. Part 2: an Analysis of Delta Wing Aerodynamic Control Effectiveness in Ground Effect

Many types of hypersonic aircraft configurations are currently being studied for feasibility of future development. Since the control of the hypersonic configurations throughout the speed range has a major impact on acceptable designs, it must be considered in the conceptual design stage. Here, an investigation of the aerodynamic control effectiveness of highly swept delta planforms operating in ground effect is presented. A vortex-lattice computer program incorporating a free wake is developed as a tool to calculate aerodynamic stability and control derivatives. Data generated using this program are compared to experimental data and to data from other vortex-lattice programs. Results show that an elevon deflection produces greater increments in C sub L and C sub M in ground effect than the same deflection produces out of ground effect and that the free wake is indeed necessary for good predictions near the ground. Maughmer, Mark D. and Ozoroski, L. and Ozoroski, T. and Straussfogel, D. Unspecified Center AERODYNAMIC STABILITY; AERODYNAMICS; COMPUTER PROGRAMS; CONTROL EQUIPMENT; DELTA WINGS; GROUND EFFECT (AERODYNAMICS); HYPERSONIC AIRCRAFT; PLANFORMS; AIRCRAFT CONFIGURATIONS; CONTROLLABILITY; DEFLECTION; DERIVATION; ELEVONS; WAKES...