Based on the MoD Grand Challenge 2008 entry we have spent the last few years developing, refining and protecting the new HALO Co-Axial Tri-Rotor Unmanned Aerial System for applications in Defence, Security and the Civilian markets.
HALO was the highest scoring system in the recent DARPA UAVForge Challenge.
This unique VTOL aircraft has a maximum take-off mass (MTOM) of 2.5 kg, endurance of 32 min and with six rotors it can develop a thrust of approximately 50 N. Due to its co-axial configuration and detachable arms and legs, it is very compact and easy to transport, making it an ideal platform for short reconaissance missions and local ISTAR up to 5-7 km.
http://www.centaur2.co.uk/emags/theengineer/te-1212/
http://www.youtube.com/watch?v=0jazEML_L9E