The project began in 1996 and was canceled in 1999.
The "R" is the Department of Defense designation for reconnaissance; "Q" means unmanned aircraft system. The "6" refers to its being the sixth of a series of purpose-built unmanned aircraft systems.
Specifications
Data from GlobalSecurity.org,[1] UAV Annual Report FY 1996[2]
^"UAV Annual Report FY 1996"(PDF). Office of the Under Secretary of Defense (Acquisition & Technology) Defense Airborne Reconnaissance Office. 6 November 1996. p. 31 (p. 39 in PDF). Archived(PDF) from the original on October 2, 2012.