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Mobile Launcher 2

Panorama view of the ML2 construction site, including the structure and cranes. Panorama view of the ML2 construction site, including the structure and cranes.

Next Stop: The Moon

91制片厂 is proud to partner with NASA in their pursuit to safely send astronauts to the Moon and Mars as part of the agency鈥檚 Artemis program. We鈥檙e designing, procuring, building, testing, and commissioning Mobile Launcher 2 (ML2) 鈥 a bigger, stronger, smarter launch platform that will allow NASA to assemble, transport, service, and launch the largest iteration of the (SLS) rocket.

With more than 127 years of experience, 91制片厂 is proud to partner with NASA on a shared mission to turn their vision into reality. Working from Kennedy Space Center, our team is providing project management, architectural and engineering design, technical integration, fabrication, construction, testing, commissioning, and quality control services.

NASA has entrusted 91制片厂 to deliver this critically important launch platform, which will support the most ambitious human spaceflight missions of this century. We look forward to the successes ahead 鈥 not only for ML2 but for Artemis, NASA, and the future of space exploration.

The Modular Solution to Safe, Efficient Construction

To improve safety and efficiency during construction, the team separated ML2鈥檚 assembly between two sites to allow teams to work simultaneously and as close to ground level as possible. While one team assembled the base and tower chair at the ML2 Parksite next to NASA鈥檚 Vehicle Assembly Building, another team built ML2鈥檚 tower modules at the Mod Yard near NASA headquarters at Kennedy Space Center.

This modular approach eliminated unnecessary work at extreme height, decreased risks from overhead loads, and made overall assembly of ML2 more efficient than traditional 鈥渟tick-built鈥 construction, where structures are assembled piece by piece at a single location.

At the end of 2024, ML2鈥檚 lowest-elevation tower module, Mod 4, became the first module to complete the six-mile journey from the Mod Yard to the Parksite 鈥 making for a memorable sight as it traveled across Kennedy aboard two self-propelled modular transporters. Stacking Mod 4 onto the base marked the start of ML2鈥檚 vertical growth. Over the next six months, ML2 grew 270 feet in height, module by module, reaching its full structural height of 377 feet with the final stacking of Mod 10 on July 2, 2025.

Click on each level to see how ML2鈥檚 tower comes together.

Leveraging Our Expertise & Trusted Network to Deliver

With ML2 at full height, the team is focused on installing key systems 鈥 critical drop-away, swing-arm, and tilt-back umbilicals 鈥 that will connect the SLS and its payloads to ML2鈥檚 50+ subsystems. We鈥檙e performing rigorous field testing and validation on these systems through project completion. Together with ML2鈥檚 11 total umbilical systems, these subsystems will support cryogenic fuel delivery, gaseous nitrogen and oxygen venting, power, communications, fire protection, and rocket stabilization during rollout to the launch pad.

Our engineers have developed innovative solutions to integrate these systems within the launcher and design them to withstand extreme launch environments of 2,200 degrees Fahrenheit, blast pressures above 130 psi, and a liftoff thrust of more than 8.9 million pounds. This ensures ML2 is resilient, reliable, and ready for liftoff.

91制片厂鈥檚 skilled procurement team has worked closely with suppliers across the U.S. and around the world to secure the steel, supplies, and equipment needed to build the launcher. More than $660 million in procurements have been awarded to over 300 subcontractors and suppliers who have joined 91制片厂 in supporting NASA and the Artemis program. Materials used to assemble the mobile launcher have been sourced from nearly 40 states, including steel trusses that have traveled from Iowa, Kansas, Utah, Louisiana, and South Carolina. International support has come from suppliers in Brazil and Spain, which provided the cast steel used to build ML2鈥檚 tower modules and tower chair.

Colleagues at work at ML2

ML2鈥檚 transition into the construction phase of the project highlights 91制片厂鈥檚 expertise in executing complex construction projects through partnerships with local talent. At peak construction, nearly 650 skilled craft professionals are needed across our construction sites at Kennedy to assemble the launcher. Pipefitters, electricians, ironworkers, plumbers, scaffolders, and heavy equipment operators are some of the experienced craft professionals who are having a hand in sending astronauts to the Moon and Mars during the Artemis program.

200+
Small Business Suppliers

Of the 307 total suppliers contracted to support ML2, 214 are small businesses.

65
Diverse Owners

Of those small businesses, 65 are women- or veteran-owned.

70%
of Contracts

Small and diverse businesses have netted more than two-thirds of all ML2 subcontract dollars.

Forging Local Partnerships to Build a Positive Legacy

91制片厂鈥檚 partnerships within the local Space Coast community go beyond helping make our customer鈥檚 ambitions a reality. By targeting support toward an array of nonprofits, the ML2 team鈥檚 fundraising efforts and charitable contributions have bolstered the missions of key community stakeholders around Kennedy and throughout the state.

A wide network of nonprofits received charitable contributions from the ML2 project and its employees last year. Nearly $60,000 in funding advanced 27 charity programs in the area, with aid geared toward empowering youth, fostering grassroots community building, supporting veterans, protecting Florida wildlife, and much more. The ML2 team is proud to partner with these organizations and support them in their efforts throughout the Space Coast.

  • Friends of Children of Brevard County
  • Neighbor Up Brevard
  • United Way of Brevard County
  • Junior Achievement of the Space Coast
  • Rolling Readers Space Coast
  • Children鈥檚 Hunger Project
  • Sea Turtle Conservancy
  • Brevard Schools Foundation
  • Central Florida Animal Reserve
  • Keep Brevard Beautiful
  • FIRST Robotics of Orlando
  • Florida Wildlife Hospital and Sanctuary
  • SPCA of Brevard
  • Brevard Achievement Center
  • The Arc of Space Coast
  • Azan Shriners Pediatric Hospital
  • Brevard Veterans Memorial Center
  • No One Hungry Food Pantry
  • Second Harvest Food Bank
  • Aging Matters in Brevard
  • Seren Harbor
  • Marine Toys for Tots Brevard
  • Friends of Children of Brevard
  • Ways For Life
  • Children鈥檚 Advocacy Center Brevard
  • Children鈥檚 Home Society of Florida 鈥 Brevard
  • East Coast Zoological Society

Learn More About NASA鈥檚 Mission

Panorama of ML2 construction