SpaceX has announced that next Tuesday, the world's most powerful rocket will take to the skies once again in an attempt to recover the Ship part of the rocket, a feat that has never been achieved.
That rocket is Starship, and when the 400-foot-tall rocket takes to the skies next Tuesday, it will mark the ninth launch of the megarocket. SpaceX's goal for this launch is to fly the upper stage or Ship part of the rocket halfway around Earth and land it in the Indian Ocean. Unfortunately, this has never been achieved by SpaceX as the upper stage always burns up upon reentry into the atmosphere.
Elon Musk elaborated on this problem during an appearance on the Joe Rogan Podcast. He explained that the problem is the heat shield not being sufficient and that recovering the upper stage so engineers can examine it may provide the answers to designing an appropriate heat shield that prevents the stages' destruction. Until then, SpaceX engineers just have to try different designs and configurations of the heat shield tiles and implement what data they can acquire throughout the re-entry process.

Another first for Starship will be its payload deployment, which will be mock-ups of its Starlink internet satellites. These mock Starlink satellites are expected to burn up in the atmosphere upon reentry.
"The flight test includes several experiments focused on enabling Starship's upper stage to return to the launch site. A significant number of tiles have been removed from Starship to stress-test vulnerable areas across the vehicle during reentry. Multiple metallic tile options, including one with active cooling, will test alternative materials for protecting Starship during reentry.
On the sides of the vehicle, functional catch fittings are installed and will test the fittings' thermal and structural performance. The entire ship's tile line also received a smoothed and tapered edge to address hot spots observed during reentry on Starship's sixth flight test. Starship's reentry profile is designed to intentionally stress the structural limits of the upper stage's rear flaps while at the point of maximum entry dynamic pressure," writes SpaceX



