SV9 Aerospace is an aerospace deep-tech startup developing next-generation Hybrid High Altitude Platform Systems (HAPS) for persistent aerial surveillance, communication, disaster management, environmental monitoring, and defense applications. The company is focused on indigenous development of long-endurance unmanned aerial systems capable of operating in the stratosphere (18–22 km altitude). Its flagship innovation combines lighter-than-air buoyancy, Heavier-than-air, buoyancy aerodynamic lift, and solar-electric propulsion to achieve extended endurance with significantly lower operating costs than conventional aircraft or satellites. The startup aims to contribute to India's self-reliance initiatives in aerospace and defence technologies.