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ART Projects by GSA Contract SIN #

SIN 871-3 System Design, Engineering and Integration

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SIN 871-4 Test and Evaluation

GSA Schedule Labor Rates

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Project 5: Aeroelastic Modeling of a Long Endurance Fixed Wing UAV

Summary of Services Performed: Use ART modeling and analysis tool RCAS to design and simulate a Long Endurance Fixed Wing UAV

ART was awarded a contract to support the development of an aeroelastic model for a long endurance fixed-wing UAV. In this project RCAS was extended to compute wing airloads as a function of angle of attack and Reynolds number as opposed to angle of attack and Mach number. Wing vortex wake, Von Karman/Dryden gust models and nonlinear unsteady Leishman-Beddos airloads option for wing flaps, aileron and tail elevator were also added. This model is currently being used for flutter analysis.

ART has also supported the modeling of the Comanche Bearingless Main Rotor (BMR). This involved enhancing components and utilities to facilitate analysis of the Comanche Regressing Lag Mode (RLM) phenomena. In addition, ART has supported modeling of the CH-47 Improved Cargo Helicopter (ICH) in RCAS.