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Forum:Commercial Space - Military Space
Topic:ULA: Complex 41 commercial crew modifications
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Robert PearlmanBoeing photo release
CST-100 Tiers 1 and 2 will be complete this week and stacked by the end of the summer before installation on Complex 41.
daboltonSo they are going to stack the tier 1 and 2 and move it to complex 41 as a whole?
Robert PearlmanYes, and those are only the first two tiers. Five more will be assembled, stacked and then moved to LC-41 to be stacked atop the other tiers.
Boeing and ULA designed the metal latticework structure to be modular such that large sections of the tower will be constructed away from the pad and then trucked in and stacked, allowing assembly to be completed between on-going Atlas V unmanned launches. It is expected to take about 18 months to erect the structure.
Robert PearlmanBoeing's Chris Ferguson on Twitter:
Good times roll... a big, and completely different payload rolls to the Atlas V pad... Commercial Crew access tower.
Jim Behling
Originally posted by dabolton:
So they are going to stack the tier 1 and 2 and move it to complex 41 as a whole?
They will stack each tier separately at the pad.
Robert PearlmanNASA release
Crew Access Tower Stacking Begins

The first new Crew Access Tower at Cape Canaveral Air Force Station in Florida since the Apollo era will take shape at Space Launch Complex-41 in the coming days as workers moved the first two tiers from a nearby construction yard to the pad surface. The tiers will be lifted into place atop each other at the foot of the launch pad starting next week.

Boeing and United Launch Alliance are building the tower which is a critical element for the launch pad as it is converted from a pad that serves only uncrewed missions to a complex that can safely accommodate the needs of flight crews along with their ground support teams for CST-100 Starliner missions. The Starliner is under development in partnership with NASA's Commercial Crew Program, along with the SpaceX Crew Dragon, to take astronauts to the International Space Station from Florida's Space Coast.

Designed with modern data systems, communications and power networks integrated and protected from blast and vibration, plus an elevator, the Crew Access Tower has been built with several features only a fully suited astronaut could appreciate, such as wider walkways, snag-free railings and corners that are easy to navigate without running into someone. The tower will also be equipped with slide wire baskets for emergency evacuation to a staged blast-resistant vehicle.

The segments were assembled about four miles away from the launch pad so workers wouldn't be idled by launch preps for United Launch Alliance Atlas V rockets. The tower will be stacked just to the side of the hard stand at SLC-41 where the boosters lift off. It will take seven tiers to complete the more than 200-foot-tall tower. A swing-out walkway bridge will be added later to connect the tower to the hatch of the Starliner so astronauts can climb aboard the ship as it stands at the pad before launch.

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