Watch the Launch

Watch the Launch

NROL-91

Overview

Destination: Low Earth Orbit
Mission: Government/Top Secret

Low Earth Orbit Space Launch Complex 6 Vandenberg SFB, CA, USA Probability: 70%

Classified payload for the US National Reconnaissance Office (NRO).

Telemetry

Launch trajectory and telemetry simulations provided by Flight Club - a rocket launch simulator and orbital trajectory visualiser for all things space!

Updates

Cosmic_Penguin • Sept. 25, 2022, 12:53 a.m.

Launch success


Jay • Sept. 24, 2022, 10:25 p.m.

Liftoff of the final Delta IV Heavy from Vandenberg Space Force Base.


Jay • Sept. 24, 2022, 9:37 p.m.

New T-0 of 22:25:30 UTC


Jay • Sept. 24, 2022, 9:34 p.m.

Weather 70% GO


Jay • Sept. 24, 2022, 9:32 p.m.

Webcast live


Delta IV Heavy

Family:
Configuration: Heavy

The Delta IV Heavy (Delta 9250H) is an expendable heavy-lift launch vehicle, the largest type of the Delta IV family, and is the world's second highest-capacity rocket in operation. It is manufactured by United Launch Alliance and was first launched in 2004.

See Details
Specifications
  • Stages
    2
  • Length
    72.0 m
  • Diameter
    5.0 m
  • Fairing Diameter
  • Launch Mass
    733.0 T
  • Thrust
    8674.0 kN
Family
  • Name
    Delta IV Heavy
  • Family
  • Variant
    Heavy
  • Alias
  • Full Name
    Delta IV Heavy
Payload Capacity
  • Launch Cost
    $350000000
  • Low Earth Orbit
    28370.0 kg
  • Geostationary Transfer Orbit
    14210.0 kg
  • Direct Geostationary
    14500.0 kg
  • Sun-Synchronous Capacity

United Launch Alliance

United Launch Alliance

(ULA)

CEO: Mark Peller Founded: 2006 Successes: 175 Failures: 0 Pending: 36

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
Arstechnica

Rocket Report: BE-4 engine breathes fire; Delta IV Heavy puts on a show

"Getting back out there might be a challenge."

Spaceflight Now

Delta 4-Heavy rocket deploys spysat on final planned mission from ‘Slick Six’

United Launch Alliance sent a triple-core Delta 4-Heavy with a top secret U.S. government spy satellite into orbit Saturday from California’s Central Coast, closing out a chapter in the tangled history of a launch pad originally built to s…

Spaceflight Now

Photos: Delta 4-Heavy rocket on the launch pad in California

These views show United Launch Alliance’s 233-foot-tall Delta 4-Heavy rocket standing on Space Launch Complex-6 at Vandenberg Space Force Base in California on the eve of liftoff with a classified spy satellite for the National Reconnaissa…

Spaceflight Now

Historic launch pad faces uncertain future after final West Coast Delta 4 mission

United Launch Alliance will move out of historic Space Launch Complex 6 at Vandenberg Space Force Base in California following the flight of a Delta 4-Heavy rocket set for Saturday, leaving the military to find a new tenant for the launch …

SpaceNews

NRO satellite flies to orbit in Delta 4’s final West Coast launch

ULA launched a classified National Reconnaissance Office spy satellite on a Delta 4 Heavy rocket September 24 at 3:25 p.m. Pacific from Space Launch Complex-6 at Vandenberg Air Force Base, California.

Vandenberg SFB, CA, USA

Space Launch Complex 6


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