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BEGIN:VEVENT
SUMMARY:Falcon 9 B5 • PWSA 50–70
DTSTART;VALUE=DATE-TIME:20251014T231200Z
DTEND;VALUE=DATE-TIME:20251014T231200Z
UID:293488645871
DESCRIPTION:A SpaceX Falcon 9 Block 5 rocket will launch 21 operational s
 atellites for the U.S. military’s Space Development Agency PWSA (Prolife
 rated Warfighter Space Architecture) constellation. The Tranche 1 satellit
 es (codenamed Wildfire) on this flight are for the Transport Layer and wer
 e built by Lockheed Martin on a Terran Orbital bus. The mission is designa
 ted as SDA-T1TL-C and the Falcon 9 booster is B1093.7 for this flight. The
  2nd stage is equipped with a Mission Extension Kit. Comprising a gray ban
 d on the RP-1 tank\, extra helium bottles & batteries\, this kit extends t
 he life of the stage in-orbit\, allowing it to deploy the payload directly
  into its operational orbit.\n-\nOnce fully operational\, the SDA Transpor
 t Layer will consist of a proliferated heterogeneous constellation of data
  relay space vehicles (SVs) that provide persistent global coverage throug
 h a mesh network comprised of communication satellites that connect to one
  another and to other space vehicles and ground stations via optical inter
 satellite links (OISLs). By nature of the mesh network spanning the globe\
 , the Transport satellites will also be able to transmit precise position\
 , navigation and timing (PNT) data to enhance GPS. A-class satellites have
  at least four optical cross-links\, that is so they can talk to satellite
 s that are in plane with one another as they're traveling and they also ca
 n talk to satellites that are cross-plane or in completely different orbit
 s. So they can maintain those four lines of communication simultaneously. 
 The B-class satellites will connect directly to the warfighters via the Li
 nk-16 military communications system. They have two optical cross-links ea
 ch\, so that allows them to maintain constant communication with the other
  transport satellites in plane. The two other nodes will be Link-16 transm
 itters. Link-16 is an existing tactical communication system used across t
 he services primarily for air and ground systems to share low latency data
 .The first phase of SDA’s Proliferated Warfighter Space Architecture con
 sists of 28 satellites (Tranche 0 including 20 communications payloads mad
 e by Lockheed Martin and York Space\, and eight missile-tracking infrared 
 sensor satellites made by SpaceX and Leidos) as a proof of concept for the
  missile tracking and data relay network\, followed by more than 150 addit
 ional satellites to provide an initial operational capability. In total\, 
 Tranche 1 will consist of 154 operational satellites: 126 in the transport
  layer developed by York\, Northrop Grumman\, and Lockheed Martin\, and 28
  focused on missile warning and tracking developed by Northrop Grumman and
  L3Harris. Combining conventional tactical radio links\, laser inter-satel
 lite communications\, and wide-view infrared sensors\, hundreds more SDA s
 pacecraft could launch later as the Pentagon ramps up efforts and integrat
 es new capabilities.\n-\nDelayed from Q4 2024\, Q1 and Q2.\n\nWebcast: htt
 ps://x.com/i/broadcasts/1dRKZaDygPrxB\nhttps://www.spacex.com/launches/sda
 -t1tl-c\nhttps://spaceflightnow.com\nhttps://www.youtube.com/live/IkEeUdH4
 pMM
LOCATION:Vandenberg AFB Space Launch Complex 4\, Lompoc\, Kalifornien 9343
 6\, USA
END:VEVENT
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