Rotomotion’s Unmanned Aerial System (UAS) was the only UAS to conduct operations at the
DSEi conference, successfully completing all ten flights using its SR20 Unmanned Aerial Vehicle (UAV). Over 26,000 people attended DSEi 2009, including Prince Michael of Kent and the Minister of Defense.

In spite of strong winds during the event, ASM Europe LTD conducted multiple flights daily during the four-day event. Attendees either watched live from the pier or viewed the streaming MPEG4 video feed from the SR20 UAV projected onto the large event screens located inside the venue. The images relayed by the UAV in real-time were extremely clear and steady. The reliability and stability of the SR20 UAV to take-off, fly various patterns and land without any human intervention is due to Rotomotion’s sophisticated, patent-pending Autonomous Flight Control System (AFCS). The video footage will soon be available on ASM Europe’s website (
The SR20 is the industry’s most affordable short endurance electric engine UAV, powered by Lithium Polymer batteries and housing one to two cameras in a pan and tilt mount. The system can track objects of interest even when the helicopter nose is pointing away from the object. While capable of fully autonomous flight, Rotomotion’s UAVs support in-flight switching between manual and autonomous modes, provided by a 2.4 MHz safety controller. The SR20 is Rotomotion’s smallest of four model sizes available; it weighs in at just under 7 kg and measures 1540 mm x 355 mm x 570 mm. All Rotomotion UAVs use the same control system, incorporating an AFCS, a GPS and a ground control system (GCS), with larger, gas powered, UAVs available for longer flight times and heavier payloads.
Codenamed Operation Vision, the demonstration provided DESi attendees intimate, in-depth understanding of the financially beneficial alternative to traditional helicopters for a variety of circumstances. The SR20 maintained stability despite flying with 20 knot winds on certain days and the audience watching from the Royal Dock’s pier was also impressed by the electric SR20’s almost silent operation, well below the level of the noise generated by the boats along the London Docklands.

Rotormotion SR20
Rotormotion SR20

By Gary Mortimer

Founder and Editor of sUAS News | Gary Mortimer has been a commercial balloon pilot for 25 years and also flies full-size helicopters. Prior to that, he made tea and coffee in air traffic control towers across the UK as a member of the Royal Air Force.