Groen Brothers Aviation, Inc. operates in the Aircraft sector. Groen Brothers Aviation, Inc. (GBA) is engaged in developing, manufacturing and marketing the gyroplane. The Company's products include GBA Hawk 4 Gyroplane, GBA ArrowHawk Gyroplane and SparrowHawk Gyroplane and Derivatives. The GBA Hawk 4 Gyroplane incorporates rotor blades optimized for autorotative flight and its rotor head with infinitely variable collective pitch control. This enables the pilot to optimize the rotor blade pitch to the existing conditions and attain a smoothly controlled ultra-short ground roll for both take-off and landing. The Company designs gyroplanes that benefit from the use of composite materials that in conjunction with advanced aerodynamic analytical techniques permit both substantially lower aircraft weights and reduced drag. GBA offers a airfoil design for its rotor blades. The Company introduced its improved SparrowHawk model, the SparrowHawk II. In our complete report available for purchase the company is compared to: Moller International, Inc., Phoenix International Ventures, Incorporation and Enviro Voraxial Technology, Inc..