SDA Tranche 2 Transport Layer B

Overview

Destination: Polar Orbit
Mission: Government/Top Secret

Polar Orbit Space Launch Complex 3E Vandenberg SFB, CA, USA

Classified mission launched by the Space Development Agency (SDA) for Tranche 2 Transport Layer.

Updates

Cosmic_Penguin • April 10, 2025, 5:35 a.m.

NET September 2026.



Vulcan

Family:
Configuration: Vulcan

Vulcan

See Details
Specifications
  • Stages
    2
  • Length
  • Diameter
    5.4 m
  • Fairing Diameter
    5.4 m
  • Launch Mass
  • Thrust
Family
  • Name
    Vulcan
  • Family
  • Variant
    Vulcan
  • Alias
  • Full Name
    Vulcan
Payload Capacity
  • Launch Cost
  • Low Earth Orbit
  • Geostationary Transfer Orbit
  • Direct Geostationary
  • Sun-Synchronous Capacity

United Launch Alliance

United Launch Alliance

(ULA)

CEO: Tory Bruno Founded: 2006 Successes: 169 Failures: 0 Pending: 42

Agency Type:

United Launch Alliance (ULA) is a joint venture of Lockheed Martin Space Systems and Boeing Defense, Space & Security. ULA was formed in December 2006 by combining the teams at these companies which provide spacecraft launch services to the government of the United States. ULA launches from both coasts of the US. They launch their Atlas V vehicle from LC-41 in Cape Canaveral and LC-3E at Vandeberg. Their Delta IV launches from LC-37 at Cape Canaveral and LC-6 at Vandenberg.

INFO WIKI

Vandenberg SFB, CA, USA

Space Launch Complex 3E


Falcon 9
Success
2 days, 8 hours ago
Starlink Group 11-30
Space Launch Complex 4E - Vandenberg SFB, CA, USA

A batch of 28 satellites for the Starlink mega-constellation - SpaceX's project for space-based Internet communication system.


Falcon 9
Success
3 days, 9 hours ago
Starlink Group 6-79
Space Launch Complex 40 - Cape Canaveral SFS, FL, USA

A batch of 29 satellites for the Starlink mega-constellation - SpaceX's project for space-based Internet communication system.


Long March 3
Success
4 days, 6 hours ago
TJSW-21
Launch Complex 2 (LC-2) - Xichang Satellite Launch Center, People's Republic of China

Chinese classified satellite claimed to be for communication technology test purposes. Actual mission not known.


Falcon 9
Success
4 days, 13 hours ago
Starlink Group 6-78
Launch Complex 39A - Kennedy Space Center, FL, USA

A batch of 29 satellites for the Starlink mega-constellation - SpaceX's project for space-based Internet communication system.


Electron
Success
5 days, 4 hours ago
Follow My Speed (BlackSky Gen-3 3)
Rocket Lab Launch Complex 1A - Rocket Lab Launch Complex 1, Mahia Peninsula, New Zealand

Note: Payload and customer identities were not publicly announced. 3rd of the BlackSky Gen-3 high resolution Earth-imaging satellites.


Long March 2
Success
6 days, 13 hours ago
Shijian 30 A-C
Launch Area 4 (SLS-2 / 603) - Jiuquan Satellite Launch Center, People's Republic of China

3 Chinese satellites described as for “Space Environment Measurements” purposes. Actual usage not known.


Falcon 9
Success
6 days, 17 hours ago
Starlink Group 6-94
Space Launch Complex 40 - Cape Canaveral SFS, FL, USA

A batch of 29 satellites for the Starlink mega-constellation - SpaceX's project for space-based Internet communication system.


Electron
Success
1 week ago
Prometheus Run (VAN)
Rocket Lab Launch Complex 2 (Launch Area 0 C) - Wallops Flight Facility, Virginia, USA

Sub-orbital launch under Rocket Lab’s Hypersonic Accelerator Suborbital Test Electron (HASTE) program. This mission was lead by MDA and deployed a…


Falcon 9
Success
1 week, 1 day ago
Sentinel-6B
Space Launch Complex 4E - Vandenberg SFB, CA, USA

The Sentinel-6 Michael Freilich (launched November 2020) and Sentinel-6B make up the Sentinel-6 mission, also known as Jason Continuity of Service (…


Falcon 9
Success
1 week, 3 days ago
Starlink Group 6-85
Space Launch Complex 40 - Cape Canaveral SFS, FL, USA

A batch of 29 satellites for the Starlink mega-constellation - SpaceX's project for space-based Internet communication system.