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: 168 Failures: 0 Pending: 43

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


Ariane 62
Success
18 hours, 13 minutes ago
Sentinel-1D
Ariane Launch Area 4 - Guiana Space Centre, French Guiana

Sentinel-1D carries an advanced radar technology to provide an all-weather, day-and-night supply of imagery of Earth’s surface as part of the Sentine…


Long March 7A
Success
2 days, 11 hours ago
Yaogan 46
201 - Wenchang Space Launch Site, People's Republic of China

Classified Earth observation satellite officially reported as for "national resources/hydrology/meteorology surveying & disaster management" purposes.


LVM-3 (GSLV Mk III)
Success
3 days, 3 hours ago
CMS-03 (GSAT-7R)
Satish Dhawan Space Centre Second Launch Pad - Satish Dhawan Space Centre, India

Communications Satellite for the Indian Navy, replacing GSAT-7 for secure real-time links between Indian warships, submarines, aircraft, and shore-ba…


Falcon 9
Success
3 days, 10 hours ago
Bandwagon 4 (Dedicated Mid-Inclination Rideshare)
Space Launch Complex 40 - Cape Canaveral SFS, FL, USA

Dedicated rideshare flight to a mid-inclination orbit with dozens of small microsatellites and nanosatellites for commercial and government customers.


Falcon 9
Success
4 days, 18 hours ago
Starlink Group 11-23
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.


Long March 2
Success
4 days, 23 hours ago
Shenzhou 21
Launch Area 4 (SLS-1 / 921) - Jiuquan Satellite Launch Center, People's Republic of China

Tenth crewed flight to the Chinese space station.


Falcon 9
Success
6 days, 22 hours ago
Starlink Group 10-37
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.


Falcon 9
Success
1 week, 1 day ago
Starlink Group 11-21
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
1 week, 3 days ago
Starlink Group 10-21
Space Launch Complex 40 - Cape Canaveral SFS, FL, USA

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


Long March 3
Success
1 week, 3 days ago
Gaofen-14 02
Launch Complex 3 (LC-3/LA-1) - Xichang Satellite Launch Center, People's Republic of China

Gaofen is a series of civilian Earth observation satellites developed and launched for the China High-definition Earth Observation System (CHEOS), a …