Wind energy usually means elaborate set up with wind turbines stretching along the horizon. But Usha-Urja, a humble device indigenously developed by Indian Air Force harvests wind energy almost out of nothing, an officer said. Jostling for space among the Aero India 2025's eye-catching innovations, this humble contraption may not be worth a second glance for many. But this equipment creates electricity at high altitudes and extreme cold weather conditions when plugged into a generator that sits compactly in a military-edition suitcase. Usha-Urja's 'wind turbine' makes use of what looks like two split open PVC pipes twisted into an awkward shape onto a base that can be expanded. This is part of the indigenous innovations of IAF being displayed at Aero India 2025 show on till February 14 at Yelahanka Airforce Base, Bengaluru. Usha-Urja is a life-saving device for the military in areas where environmental conditions degrade performance of battery-operated generators or the conventiona