he specifics behind the design of the legs is open to speculation, although they are clearly based on the prototype leg system, photos of which were recently published by SpaceX, from its position on the factory floor at Hawthorne.
These legs will be stowed on the aft of the first stage during the ride uphill, prior to deploying via pneumatic cylinders driven by compressed helium once the stage is on the final part of its powered descent.
SpaceX Chief Designer and CEO Elon Musk had already noted the design is a nested, telescoping piston using high pressure helium, given the requirement the system needs to be ultra light.
Should SpaceX provide additional details on the leg system and test plan, another article will follow.
Model S was built Electric from the ground up. Model III is being built Electric and Autonomous from the ground up. Did y'all enjoy last night's launch? I certainly did. I like being a witness to history being made. Merry Christmas!