![]() According to ULA, "The Centaur forward adapter provides structural mountings for the fault-tolerant avionics system and electrical interfaces with the spacecraft."Īlso along for the ride is a booster that is 12.5-ft (3.8 m) in diameter and 106.5-ft (32.5 m) in length. It is powered by an RL10C-1 engine that produces 22,900 lbs (101.8 kilo-Newtons) of thrust. Both the Centaur and the satellite are encapsulated in the two-piece shell of the PLF.Ī Centaur second stage, which is 10 ft (3 m) in diameter and 41.5 ft (12.6 m) in length, is a cryogenic vehicle that is fueled with liquid nitrogen and liquid oxygen. The PLF is constructed with a vented aluminum-honeycomb core and graphite-epoxy face sheets. Making up part of the launch vehicle for today's flight is a payload fairing (PLF) 17 ft (5 m) in diameter. You can view the scheduled 2pm launch below via livestream. The 511 is the last of the not-yet-flown configurations in the Atlas family, according to a mission description from ULA. The mission will also include the maiden voyage of the Atlas V 511 configuration, and the only planned flight for it. Data that is collected from the GSSAP will provide unique timely and accurate orbital predictions, and will enhance the ability to warn a spacecraft owner/operator if there is impending danger of another object approaching too closely. ![]() The two satellites will serve as a neighborhood watch service that will improve flight safety for all spacefaring nations operating in the same orbit. Today's launch will include two identical Geosynchronous Space Situational Awareness Program (GSSAP) satellites (GSSAP-5 and GSSAP-6), directly to a near-geosynchronous orbit approximately 22,300 miles (36,000 km) above the equator. The mission is set to launch from Cape Canaveral Space Force Station in Florida at 2pm EST. Space Force's Space Systems Command (SSC). The United Launch Alliance (ULA) is set to launch its USSF-8 mission today for the U.S.
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