Aeronautics Defense Systems' PoziDrone subsidiary is conducting flight tests using a trio of quadcopter designs, having opted to develop such systems to fulfil military and civilian applications.

Dany Eshchar, Aeronautics' chief executive, says the current testing effort involves multirotor designs with maximum take-off weights of 15kg (33lb), 30kg and 120kg.

The Israeli company, which has previously concentrated on developing UAVs and on converting light manned aircraft for unmanned operation, is expanding its product line to meet growing demand for small quadcopters.

Israel's armed forces are looking to acquire a number of multirotor drone types to support special missions, while other security organisations in the nation are keen to introduce more advanced systems than the off-the-shelf models currently employed.