Seeking Lift Share: Design Tradeoffs for a Winged Single Main Rotor Helicopter

A single main rotor helicopter with a wing is one proposed design for the U.S. Army Future Vertical Lift (FVL) Capability Set 1 (CS-1). While there are many single main rotor aircraft, there are a few with stub wing designs and even fewer with a large wing appropriate for high speed operating conditions expected for FVL. In this work, a flight dynamics model of generic single main rotor helicopter with a wing is designed to meet the FVL CS-1 class of aircraft. The generic design is derived from open literature and well studied UH-60A, Bo-105, and XV-15 aircraft. The design is implemented in a blade element flight dynamics model which is subsequently used to develop a preliminary flight control design. The complete aircraft design approach is detailed and design tradeoffs with respect to trim, flight dynamics, and maneuverability are presented.