Three spacecraft components Honeywell Aerospace is developing for use on the next-generation GPS 3 satellites Lockheed Martin is building for the U.S. Air Force completed critical design review, the Phoenix, Ariz.-based company said Aug. 18.

Honeywell is building the on-board computer, reaction wheel assembly and inertial measurement unit for the GPS 3 satellites for Denver-based Lockheed Martin Space Systems under a roughly $106 million contract.

Lockheed Martin is expected to build 12 of the next-generation timing and navigation satellites, the first of which is slated to launch in 2014.