Successful first campaign of flight tests for Patroller™ long-endurance surveillance UAV

Paris, July 29, 2009

Sagem (Safran group) and Stemme have successfully carried out the first campaign of flight tests for the Patroller™ long-endurance surveillance UAV system, scheduled to be qualified in 2010.

The campaign, which took place from June 10 to June 30, 2009, in Kemijarvi* (Finland), totalled 8 flights, including several endurance ones. A flight longer than 10 hours brought it to an end. The campaign demonstrated the platform's entire range of performances, and in particular its capability to carry out long duration missions. Takeoff, flight control, automatic landing and operation of the image-intelligence payload were also demonstrated.

Patroller™ draws on Sagem's skills in operational UAV systems and Stemme's in high-performance light aircraft. With excellent cost efficiency, it has heightened performance: 30 hours autonomy, operational altitude of 25 000ft, maximum speed of 300 km/h. Patroller™ is modular with tried and tested components, including an image chain based on Sagem's Euroflir 410 gyrostabilized optronic observation system and a Synthetic Aperture Radar pod from OHB. Down the line it will be able to carry other payloads (ie, air relays and maritime radars).

As a new dual-UAV system, Patroller™ is particularly adapted to long-endurance defense and security surveillance missions. Launched from an airstrip, it is interoperable with Sagem's SDTI Sperwer tactical UAV system, with which it shares the same ground station and a large part of its avionics. Its characteristics will allow it to operate in the medium term in civilian airspace to carry out territorial protection, border and coastal surveillance and rescue missions.

* Kemijarvi is the test site for Robonic, a subsidiary of Sagem.


Sagem is a high-tech company in the Safran group. It is a world or European leader in solutions and services in optronics, avionics, electronics and critical software for the civilian and military markets. Sagem is the European No. 1 and worldwide No.3 in INSs for aeronautic, naval and land applications. It is also the worldwide No.1 in helicopter flight controls and the European No.1 in optronic and tactical UAV systems. Present across the globe via the Safran group's international network, Sagem and its subsidiaries employ 6000 people in Europe, South East Asia and North America.

STEMME AG provides high end light aircraft for sports and utility markets. The a/c hold world-records and are in use for UAS-payload/datalink-developments as well as for high altitude turbulence research. Out of this widespread experience in design and in the field STEMME provides airframe and integration for the joint Patroler project. STEMME is located at EDAY airfield close to Berlin, Germany.

Press Contact | Philippe Wodka-Gallien | Tel. : +33 (0)1 58 11 19 49 |

STEMME | Tel : 00 49 3341 3612-0 |

Hit enter to search or ESC to close