Starship-based test articles Liquid Oxygen Header Test Tank (LOX HTT) was based on the
LOX Header tank, as well as surrounding parts of the nosecone. On January 24, 2020, the tank underwent a pressurization test which lasted several hours. The following day it was tested to destruction. It was moved around the Sanchez site on August 8, 2025.
SN7 was a pathfinder test article for the switch to type
304L stainless steel. The bulkhead came apart at a pressure of in ullage and at base. On January 26, 2021, SN7.2 passed a cryogenic proof test. On February 4, during a pressurize to failure test, the tank developed a leak.
S24.1 was a test article design to test the redesigned aft section present on Block 1 ships after S24. It conducted a single test on the can-crusher on October 7, 2022. After this test failed, it received modifications before completing two tests on December 5 and 6.
S26.1 was a test tank designed to test the aft section of Block 1 ships after S24.1's failure. It conducted two tests on the can-crusher, before being moved off in July 2023. On September 21, 2023, it was tested to destruction.
S24.2 was a test article designed to test the payload bay of Starlink dispenser vehicles. On September 28, 2023, it was moved to the Massey's test site. It performed two tests before subsequently being scrapped.
TT16 is a test tank designed for testing the Block 2 ship aft section, consisting of an aft section and a small common dome section. Its official designation is not yet known. followed by another test on September 6, 2024. It was returned to the production site in early October for scrapping. In January 2025, it was moved into Starfactory, potentially to test modifications made to S34. On February 4, it rolled to Masseys for additional testing,
Test Tank 2 (TT2) was another subscale test tank similar to TT1. On January 27, 2020, TT2 underwent an ambient temperature pressure test where it reached a pressure of before a leak occurred. Two days later, it underwent a cryogenic proof test to destruction, bursting at .
GSE 4.1 was first spotted in August 2021 and was the first ground support equipment (GSE) test tank built, made from parts of GSE 4. It was rolled back to the launch site in November 2021, where it underwent an apparent cryogenic proof test to failure on January 18, 2022, where it burst at an unknown pressure.
EDOME was a test tank created to test flatter domes, possibly used on future Starship prototypes. It was moved to the launch site in July 2022, and then back to the production site the next month, after undergoing no tests. It was later moved from the production site to the Massey's test site in late September 2022, where it was damaged during a cryogenic pressure test to failure. == See also ==