Advanced Inertial Reference Sphere inertial navigation system that provided its navigation. It also built inertial navigation systems for the fleet of ballistic missile submarines. In addition to the manufacture of nuclear missiles and bombers, Rockwell also produced key components of the bombs they carried, including plutonium triggers at the Rocky Flats Plant in Colorado. Rockwell ran the weapons plant from 1975 to 1990, and was the one of the subjects of the investigation of Special Grand Jury 89-2 into mismanagement of the plant. In 1990, a group of Colorado homeowners filed a lawsuit against Rockwell and the Dow Chemical Company, accusing the operators of reducing the value of their properties as a result of plutonium releases from the plant. A $375 million settlement was reached in 2016. Rockwell built heavy-duty truck axles and drive-trains in the U.S., along with power windows, seats, and locks. The Rockwell Tripmaster trip recording system for commercial vehicles was released along with the Logtrak module for DOT log recording for fleets who successfully petitioned the DOT for paper logbook exemptions. Rockwell also built yachts and business jets and owned large amounts of real estate. It was also involved in providing custom electronic intelligence equipment to the Imperial Iranian Air Force as part of Project Ibex and paid bribes to the Shah of Iran in order to secure contracts there. Products Aircraft Fuji/Rockwell Commander 700 North American Rockwell OV-10 Bronco North American Sabreliner Rockwell B-1 Lancer Rockwell Commander 112 Rockwell Ranger 2000 Rockwell X-30 Rockwell XFV-12 Rockwell-MBB X-31 Crewed spacecraft Apollo Command and Service Module (initially under North American Aviation, then North American Rockwell) Space Shuttle orbiter (initially under North American Rockwell) Rocket propulsion (Rocketdyne division) H-1 (Saturn I, I-B) J-2 (Saturn I-B, V) F-1 (Saturn V) RS-25 (Space Shuttle) For a more extensive list, see Rocketdyne engines. Missiles AGM-53 Condor AGM-114 Hellfire Unmanned aerial vehicles Rockwell HiMAT Research laboratory Rockwell International had a major research laboratory complex in Thousand Oaks, Ventura County, California. It was founded and built by North American Aviation in 1962, as the North American Science Center. In 1973 it became the Rockwell International Science Center. The laboratory did independent contract research for the U.S. Government, and also provided research services for the company's business units. It was famous for its research in: advanced materials, particularly ceramics; for its infrared imagers; for its research in liquid-crystal displays; and for its high-speed electronics.