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)

Interim CEO: John Elbon Founded: 2006 Successes: 174 Failures: 0 Pending: 37

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 64
Success
2 hours, 41 minutes ago
Amazon Leo (LE-03)
Ariane Launch Area 4 - Guiana Space Centre, French Guiana

Amazon Leo, formerly known as Project Kuiper, is a mega constellation of satellites in Low Earth Orbit that will offer broadband internet access, thi…


Falcon 9
Success
8 hours, 23 minutes ago
BlueBird Block 2 #3-5
Space Launch Complex 40 - Cape Canaveral SFS, FL, USA

AST SpaceMobile’s Block 2 BlueBird satellites are designed to deliver up to 10 times the bandwidth capacity of the BlueBird Block 1 satellites, requi…


Kuaizhou 11
Go
11 hours, 22 minutes ago
Unknown Payload
Launch Area 95A - Jiuquan Satellite Launch Center, People's Republic of China

Details TBD.


Long March 12
Success
12 hours, 18 minutes ago
SatNet LEO Group 22
Commercial LC-2 - Wenchang Space Launch Site, People's Republic of China

A batch of 9 Low Earth Orbit communication satellites for the Chinese state owned SatNet constellation operated by the China Satellite Network Group.…


Long March 3B/E
Success
1 day, 5 hours ago
Shijian 31
Launch Complex 2 (LC-2) - Xichang Satellite Launch Center, People's Republic of China

Classified experimental Chinese satellite of unknown purposes (officially described for "spatial environment detection" purposes).


Falcon 9
Success
1 day, 23 hours ago
Starlink Group 17-54
Space Launch Complex 4E - Vandenberg SFB, CA, USA

A batch of 24 satellites for the Starlink mega-constellation - SpaceX's project for space-based Internet communication system.


Kinetica 1
Success
2 days, 11 hours ago
8 x Jilin-1
Launch Area 130 - Jiuquan Satellite Launch Center, People's Republic of China

8 Earth observation satellites for the Jilin-1 commercial Earth observation satellites constellation: * High Resolution-04D 01-02 * High Resoluti…


Falcon 9
Success
5 days, 2 hours ago
Starlink Group 10-54
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.


H3-30
Success
5 days, 14 hours ago
H3-30 Test Flight
Yoshinobu Launch Complex LP-2 - Tanegashima Space Center, Japan

Test flight of the H3-30 variant of the H3 launch vehicle with 3 LE-9 engines in the first stage and no SRBs. The flight will carry a dummy main payl…


Falcon 9
Success
5 days, 23 hours ago
Starlink Group 17-44
Space Launch Complex 4E - Vandenberg SFB, CA, USA

A batch of 24 satellites for the Starlink mega-constellation - SpaceX's project for space-based Internet communication system.