
COLORADO SPRINGS, Colo.—A little over a year after winning a Space Development Agency (SDA) contract to provide satellites for a low-Earth orbit mesh communications network, Northrop Grumman [NOC] recently completed the critical design review (CDR), paving the way to begin building its spacecraft for the Tranche 1 Transport Layer (T1TL), the company said on Tuesday. Northrop Grumman’s contract calls for launch of the first of 21 of 42 T1TL satellites by September 2024, 32 months after contract award. The remaining…