Add an in-flight refueling probe. Sadly, this is just an inert probe, fitted to a Calspan Aerospace-operated Learjet acting as a surrogate for a US Navy unmanned combat aircraft to demonstrate autonomous aerial refueling.
Photo: CTSi, via Navair
The flight tests were completed on September 6 in Niagara Falls as part of the Navy's unmanned combat air system demonstrator (UCAS-D) program. UCAS-D includes a pair of Northrop Grumman X-47B demonstrators, one of which made the first unmanned carrier take-offs and landings earlier this year.
For the latest tests, the inert probe and X-47B command, control and navigation hardware and software were installed on Calpan's Learjet in-flight simulator, which then flew autonomously behind an Omega K-707 tanker trailing a refueling drigue. Dry plug-in are planned for later this year, again using the Learjet.