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WTF? Why? As long as signal latency you get is within design limits, there should be no reason why you would need a ground station. What is the point of SATCOM if you end up needing a ground station anyway? Maybe I am misuderstanding you, but that is not how SATCOM drones work. American drone...

Well, this article says MQ-9B has a mission radius of 2,200 km with on-station time of 8 hours. https://www.flightglobal.com/military-uavs/general-atomics-demos-mq-9s-anti-submarine-tracking-capability/142032.article...

This 250 km range was with LOS comms. With SATCOM, no official range figure has been published, but going by endurance and cruise speed estimates, we should be able to get a figure of around 1000 km. EDIT: 1000 km figure is based on cruise speed of around 125 kmph and an endurance of 8 hours...

Ferry range should be much larger than 350 km. 350 km sounds like the combat operations radius with a large time on station.

The following links say Rustom has already flown in SATCOM mode. Restricting the drone to fly only at Chitradurga and not a Bangalore-Delhi flight might have to do with safety reasons. The drone crashing over populated areas could be a problem. Its still under development, after all...

Wasn't there some scheme allowing private sector enterprises to access DRDO facilities for R&D? Access to a runway for MALE UAVs should be no problem for private sector, given that scheme. The problem seems to be corporate risk assessment deems such projects unviable due to the amount of R&D...

In all fairness, one design engineer from the Tapas/Rustom project did accept his mistake of trying to go with a twin-engine configuration for Rustom which, he says, caused the entire system to become chronically overweight thereby delaying the project. I don't like those who criticize DRDO...