DRDO to make sun-powered UAVs (Drones) that can fly for 15 days
After launching development of stealth UCAVs (unmanned combat aerial vehicles), India is now also looking at designing solar-powered spy drones which can cruise in the sky for several days at a time. The high-altitude, long endurance (HALE) solar-powered UAV will not just reduce Indian military's carbon footprint but more importantly provide a cost-effective and flexible 24x7 ISTAR (intelligence, surveillance, target acquisition and reconnaissance) platform akin to "a pseudo-satellite" orbiting closer to the ground. "Yes, Army and IAF have asked us to develop the solar-powered HALE UAV. Initial work is in progress for such a drone which can undertake a 15-day continuous flight over 30,000-feet,'' DRDO's chief controller R&D (aeronautics) Dr Prahlada told TOI. The drone will harvest solar energy during the day, storing it in fuel cells to provide power for electric motors for night flying. "Solar efficiency is low but we are looking at a pay...