The Defence Research and Development Organisation (DRDO) has revealed that India plans to develop solar-powered unmanned flying machines with the capability of remaining airborne for at least a month in all weather conditions.
With specially-designed solar panels to keep it airborne even in nights and cloudy weather conditions the UAV would be capable of providing real-time information and data of the area through a secure data link.
The Rustom-1 UAV, developed by the DRDO, can remain airborne for 24 to 36 hours while Nishant has an endurance of nearly five hours.