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SpaceX’s Pad 2 at Starbase is constant to refine its preparations for the return of Booster 19, with deluge testing and even load testing the Ship Fast Disconnect (SQD) arm.
This time, Flight 12’s booster might be sporting its full complement of 33 engines, with the following Static Hearth check the most important milestone for the pad forward of launch in Might.
Groups have centered on reinforcing key elements of the tower and launch mount, incorporating design classes from Pad 1 to help sooner turnaround occasions between flights.
On the tower, work has progressed on the Ship Fast Disconnect (SQD) arm, which connects to the Starship higher stage for propellant loading.
This week, technicians added metal reinforcements to the decrease aspect of the arm’s shoulder part. These additions are believed to strengthen the construction whereas enabling the arm to retract extra shortly throughout launch.
A sooner swing-out reduces the chance of injury from the extraordinary exhaust plume of Tremendous Heavy’s 33 Raptor engines at liftoff. This enchancment ought to reduce post-launch refurbishment and contribute to a better launch cadence.
The core work on the SQD arm itself seems largely full, and scaffolding might quickly be eliminated as closing preparations proceed.
Curiously, the water luggage made one other look on Tuesday in relation to the SQD arm. Usually, these luggage are used for load testing on the chopsticks.
It’s potential they’re getting used to simulate downward forces on the arm, equivalent to the load of prop flowing by means of the pipework, or the forces of thrust from the rocket pushing down on the arm throughout launch and catch.
Elsewhere on the tower, set up of a brand new roof construction is visually full. The roof section was lately lifted into place and is being welded securely.
Its major perform is to protect the higher part of the tower from the exhaust of Starship’s three Raptor 3 engines throughout catch-and-recovery operations.
Ship’s catch is completely different from the Booster, with the “flip and burn” method. In a tower catch, the returning Starship approaches from behind the construction earlier than reorienting and sliding between the “chopsticks” (Mechazilla arms).
Extra safety comes within the type of exterior panels being put in alongside the highest section. These encase and safeguard important {hardware}, together with elements of the drawworks system that powers the chopsticks. Sustaining the integrity of this mechanism is important to forestall any failure that might compromise future catch makes an attempt.
Consideration has additionally turned to the Orbital Launch Mount (OLM) on Pad 2. With Booster 19 now again in Mega Bay 1 for engine set up, scaffolding has reappeared across the two Booster Fast Disconnects (BQDs) — one for liquid oxygen and one for liquid methane.
On high of the BQDs, proximity sensors have been put in to help with the exact alignment of the booster’s aft part as it’s lowered onto the mount.
Not like the sooner alignment pin system used at Pad 1 — which required guide elimination, welding the holes to guard towards launch harm, and reinstallation for every subsequent booster — the brand new sensor-based method on Pad 2 guarantees a extra streamlined course of.
The twin BQDs present a number of reference factors for measuring distance and making advantageous changes in place, rotation, and lateral motion. This eliminates the inefficiencies of the single-point system on Pad 1, the place sensors contained in the mount would solely develop into helpful after the booster was already partially lowered.
Notably, the sensors had been initially positioned on high of the BQDs, an space uncovered throughout launches and landings. SpaceX is now relocating them into protecting hoods on the BQDs to make sure they survive repeated operations and help speedy reusability.
In associated exercise on the OLM, alignment hemispheres had been quickly eliminated for unspecified modifications or inspections, probably knowledgeable by information from hold-down arm retraction assessments. They had been later reinstalled, adopted by additional testing of the hold-down arms to confirm efficiency.
The pad’s deluge system has additionally seen latest activation, together with a distinguished check coinciding with NASA’s SLS/Artemis 2 actions.
Very spectacular high deck deluge check at present on Pad 2!
📹 @NASASpaceflight pic.twitter.com/jln5cY0Zaq
— Colleen (@colleenliedtke) April 5, 2026
Throughout one such check, the chopsticks demonstrated noticeable motion. The actuators controlling the arms have been upgraded from a hydraulic to an electrical system, displaying spectacular pace even in preliminary post-swap operations.
This variation is anticipated to enhance responsiveness and reliability throughout booster and ship catches.
These incremental however purposeful modifications at Pad 2 replicate SpaceX’s iterative method to refining Starship infrastructure and supply a template for the brand new pads at 39A and 37 on the East Coast.
By addressing potential factors of wear and tear, bettering alignment precision, and enhancing protecting options, the corporate goals to make each the launch mount and tower extra strong and environment friendly — key steps towards attaining the high-frequency, totally reusable operations envisioned for the Starship program.
Additional testing, together with potential static fires with Booster 19, is anticipated within the coming weeks as Pad 2 nears operational readiness.
It’s understood that each the Booster and the Ship for Flight 12 have all their engines put in, pointing to twin Static Hearth flows at Pad 2 and Massey’s, respectively, within the coming week or so.
(Lead Picture through Colleen Liedtke for NSF).
