The University of Maryland Graduate Team has designed Elysium hybrid electric twin rotor to meet all of the vehicle and operational requirements specified in the Request for Proposals for the 2017 AHS International Student Design Competition, to design a 24 Hour Hovering Machine. Elysium is designed to maximize hover efficiency while ensuring superior reliability with superb gust tolerance, all with in a 5 year design, build, and test timeline. • Advanced blade aerodynamics allow for hover optimized rotor that achieves a figure of merit of 0.847 • The hybrid-electric propulsion drive train provides system redundancy, minimum fuel weight and a platform for all future electric aviation technology to be implemented • Innovative half-cyclic Fly-By-Wire controls allow for full control authority with minimum weight • Novel semi-articulated hub design provides unprecedented mechanically compact and maintenance free hub design.