III.D.17. Advanced Rotorcraft Aeromechanics Technologies (ARCAT). By FY00, develop and demonstrate critical technologies in rotorcraft aeromechanics to contribute to enhanced warfighting needs for fielded and next generation systems. Conduct research and development to achieve technical objectives by increasing maximum blade loading 15 percent, increasing rotor aerodynamic efficiency 5 percent, reducing aerodynamic adverse forces by 10 percent, reducing aircraft loads and vibration loads by 33 percent, reducing acoustic radiation by 4db, increasing inherent rotor lag damping 50 percent, and increasing rotorcraft aeromechanics predictive effectiveness to 74 percent. By FY97, exploit concepts for smart materials active on-blade aerodynamic controls. By FY98, simulate high-lift, low-energy, periodic-blowing airfoil design; evaluate practical Navier-Stokes CFD solver for rotorcraft interaction aerodynamics; and demonstrate model-scale, on-blade active control rotor concepts for reduced vibration and noise. By FY99, demonstrate integrated CFD/finite-element structures rotorcraft modeling. By FY00, demonstrate concepts towards elimination of conventional rotor lag dampers through the application of smart structures. Achievement of aeromechanics technology objectives will contribute to rotorcraft system payoffs in range, payload, cruise speed, maneuverability/agility, reliability, maintainability, and reduced RDT&E, procurement, and O&S costs. Results will be achieved by addressing technical barriers of airfoil stall, high unsteady airloads, blade-vortex interaction, highly interacting aerodynamics phenomena, complex aeroelastic and structural dynamics characteristics, and limited analytical prediction methods and design tools. Concepts include application of on-blade active control to increase rotor performance and aerodynamic efficiency, reduce BVI noise, blade loads, and vehicle vibration at the source; optimizing the configuration geometry of the rotor blade and introducing advanced airfoil concepts to increase aerodynamic efficiency, and maximum blade loading; and vigorously integrating and validating advanced analytical tools such as CFD, finite element structural models, and advanced computational solution techniques to effectively advance rotorcraft aeromechanics technology.
Supports: RAH-66, AH-64, and Fielded System Upgrades, Next Generation Cargo Vehicles (Joint Transport Rotorcraft), collaborative technologies, and Battle Lab OCRs for EELS, CSS, D&SA, DBS, and MTD Battle Labs. Contributes to RWV TDA objective, goals, and payoffs.
|STO Manager:||TSO:||TRADOC POC:|
|Wayne Mantay||Drew Orlino||Glenn Harrison|
|ATCOM/AFDD||SARD-TT||U.S. Army Aviation|