Danaus is a developer of an ultracompact-ultralight vertical takeoff and landing personal gyrocopter. It offers KOLIBRY, a gyrocopter composed of a spherical shape cabin, electric hub motors, landing wheels that have elastomeric fan blades to absorb a 5G landing impact, a lift-rotor on the top, and a thrust-rotor on the rear. The KOLIBRY is built using acrylic, aluminum, engineered plastics, and carbon fiber composites. It can be used by a single pilot or for heavy package drone delivery.