Reference Unit -
Key features

Specifications, designed to meet payload/range requirements of the drone market. The BEE reference unit complies with all critical requirements for the VTOL/UAV market:

series hybrid power
gas turbine generator
operating range > 2 hours
mtow 250 kg
payload 71 kg
autonomous operation in designated flight zones
Low noise emission 62 dB @ 240 ft only
assisted operation automated routing, state-of-the-art avionics
Competitive operating costs compared to Helicopters

All elements of the vehicle are based on pre-assembled system components that have been developed by established companies. These companies are currently delivering samples for pilot production.

The leading Edge of autonomous VTOL transportation

Series Hybrid Multirotor VTOL compatible with components from the aviation industry.
High commonality, convergence with available vendor products.

  • Lightweight
    optimized carbon airframe
  • Compact
    small landing footprint
  • Streamlined
    highly efficient shrouded fans
  • Electric
    series hybrid powertrain (bridge technology copes with limited accumulator-capacity)
  • Responsive / reliable
    PID controller tethered to state-of-the-art Autopilot
  • Safe and easy to operate
    redundant system architectur
  • Inexpensive
    low maintenance costs, no special infrastructure needed

Concept - system layout objectives

Multicopters - not Helicopters - are the appropriate platforms for “Autonomous Flying Systems”

  • No surplus, complex electro-mechanic-actuators needed
  • Most integrated mechatronic VTOL system

Electrifying a Multirotor, not a Helicopter

  • Heli.: High-torque-drive-train necessary: heavy, complex, expensive
  • Multi.: low torque, light weight, simple, inexpensive

Purposive 6 Rotors

  • It is the lowest number of identical rotors, which establishes a system redundancy providing safety in case of failure of a fan
  • Utmost cost effective and safe VTOL system

Shrouded Fans

  • Shrouded fans have proven as the most efficient propelling systems
  • Low noise emission
  • Preferable ratio: size / lift
  • Safe, cladded rotors, no radial ejection