Space Launch Complex 40

Space Launch Complex 40 is a launch site for orbital rockets located on the Cape Canaveral Space Force Station in Florida. Originally built for the United States Air Force's Titan rocket program, the complex was extensively rebuilt in the 21st century to support the Falcon 9 and Falcon Heavy launch vehicles operated by the private aerospace company SpaceX. It has been the departure point for numerous critical missions, including resupply flights to the International Space Station and the launch of the Dragon spacecraft.

History

Construction of the complex began in 1963 as part of the Integral Launch and Reentry Vehicle program to support the new Titan III family of heavy-lift rockets. The first launch from the pad was a Titan IIIC vehicle on 18 June 1965, carrying a Transit navigation satellite. For decades, SLC-40 served as a primary site for Department of Defense and National Reconnaissance Office payloads, launching variants like the Titan IIID, the Titan IIIE with its Centaur upper stage, and finally the Titan IV. The pad was heavily damaged in a 1998 Titan IV explosion that destroyed a classified satellite, but it was repaired and returned to service. Following the retirement of the Titan fleet, the site was leased to SpaceX in 2007, which initiated a major demolition and reconstruction project to adapt it for the Falcon 9.

Facilities and infrastructure

The original Titan-era infrastructure included a massive Mobile Service Tower and a fixed Launch Umbilical Tower with swing arms for vehicle servicing. Following the 2007 agreement with the Space Force, SpaceX demolished these structures to create a clean-pad design. The current complex features a flat pad surface with a flame duct and a strongback-style Transporter erector launcher that raises the rocket vertically. Support facilities include a Hangar for horizontal integration of the Falcon 9 and payload, a propellant storage area for RP-1 and liquid oxygen, and a Blockhouse for launch control. The site is distinct from the nearby Space Launch Complex 41, which launches the Atlas V and Vulcan Centaur rockets for United Launch Alliance.

Launch history

From 1965 to 2005, the complex hosted 55 launches, primarily of the Titan III and Titan IV rockets for military and intelligence agencies like the National Reconnaissance Office. The first SpaceX launch from the refurbished pad was the maiden flight of the Falcon 9 v1.0 in June 2010, carrying a Dragon Spacecraft Qualification Unit. The site then became the workhorse for SpaceX's orbital missions, supporting dozens of launches for NASA, commercial customers, and the United States Space Force. A significant anomaly occurred in September 2016 when a Falcon 9 and its Amos-6 satellite payload were destroyed during a pre-launch static fire test, causing substantial pad damage and a lengthy stand-down. After repairs and upgrades, launches resumed in December 2017.

Notable missions

SLC-40 has been the origin for many historic flights. The Titan IIIE launched the Viking 1 and Viking 2 orbiters and landers to Mars in 1975. In the SpaceX era, it launched the first commercial spacecraft, the Dragon capsule, to berth with the International Space Station in 2012. It has been the primary launch site for numerous NASA Commercial Resupply Services missions to the station. The complex also supported the first flight of the upgraded Falcon 9 Block 5 in 2018 and launches of the GPS Block III satellites for the United States Space Force. While Falcon Heavy cores are integrated at the nearby Launch Complex 39A, side boosters that have flown from SLC-40 are often used in its configurations.

Future use and developments

The complex is expected to remain a high-tempo launch site for the Falcon 9 for the foreseeable future, supporting Starlink satellite constellations, ongoing NASA missions, and national security launches for the Space Force under the National Security Space Launch program. SpaceX has implemented upgrades to increase launch cadence, including improved propellant loading systems and rapid turnaround capabilities. While the company's next-generation Starship vehicle will launch from Starbase in Texas and LC-39A, SLC-40 will continue as a dedicated facility for the workhorse Falcon 9, ensuring continued access to orbit from the Cape Canaveral range.

Category:Rocket launch sites in the United States Category:Cape Canaveral Space Force Station Category:SpaceX facilities