Ghatak Stealth Unmanned Combat Drone Programme Reaches New Milestone; DRDO Lab Hands Over Landing Gear  by Swarajya Staff - Jan 11, 2021 05:16 AM Separation of store from UCAV. Snapshot DRDOâs Chennai-based lab has handed over the landing gear developed for Indiaâs secretive stealth unmanned drone programme. Indiaâs highly secretive unmanned combat aerial vehicle (UCAV) programme, under which a technology demonstrator called stealth wing flying testbed or SWiFT is being developed, has reached a new milestone. Livefist has reported that the Combat Vehicles Research and Development Establishment, a Chennai-based lab of the Defence Research and Development Organisation, has handed over retractable landing gear systems for SWiFT.