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When Apple releases a new iPhone, it’s usually a new color, a slightly better camera, maybe a small tweak here and there. But when SpaceX rolls out a new Starship, say from V2 to V3, it’s a full-on leap, we get closer to making life multi-planetary. THIS is what real innovation looks like. Just look at what Starship V3 brings to the table from V2.
STRUCTURAL UPGRADES
• Integrated vented interstage/forward dome on the booster, reducing complexity and mass.
• Reduced from four to three grid fins on boosters, with fins 1.5 times larger, positioned lower, and integrated with catch points to reduce heat during separation.
• Different tile design for the heat shield on ships.
• Increased internal reinforcements in the nosecone, including more stringers.
• Forward flaps redesigned to be thinner and angled at 140 degrees, reducing heating and pitch-up during reentry.
• Addition of a secondary ablative layer under the primary heat shield on flaps, and "crunch wrap" felt between tile gaps to prevent heat seepage.
• Metallic heat shield tiles added to the updated aft dome on boosters.
• Four aerodynamic chines on the oxygen tank for lift during descent, housing batteries, COPVs, and CO2 tanks for fire suppression.
• Elliptical common dome (vs. conical in earlier versions), altering propellant capacity slightly.
• Redesigned fuel transfer tube in Super Heavy booster, enabling faster and more reliable flip maneuvers and simultaneous engine startup.
• Taller and heavier design overall for improved performance.
ENGINE UPGRADES
• Use of Raptor 3 engines, increasing thrust (booster to 80.8 MN, ship to up to 26.48 MN in later blocks).
• Removal of most engine shielding due to Raptor 3 design.
• Switch from hydraulic to electric gimbal actuators on engines.
• Upgraded fire suppression system using gaseous nitrogen (ship) and CO2 (booster).
• Subcooled propellants for improved performance and density.
• Ships feature six engines (three sea-level and three vacuum-optimized RVacs), with potential for more in future blocks.
• Reinforced thrust puck with conical steel structure to support inner engines.
• Larger transfer tube connecting engines and methane tank on boosters.
• Two quick disconnects on boosters (one for LOX, one for methane) vs. single in earlier versions.
• Additional header tanks for increased landing burn capacity.
• Added filters in aft region to address fuel contamination.
• LOX supplied by header tank during landing burn for inner engines.
PERFORMANCE UPGRADES
• Increased payload capacity to 100 t to LEO (up from 35 t in Block 2).
• Booster propellant mass increased to 4,050 t (up from 3,650 t).
• Ship propellant mass increased to 1,600 t (up from 1,500 t).
• Total vehicle height increased to 124.4 m (up from 123.3 m).
• Boostback burn thrust increased to 10,000 tf.
• Ship initial thrust increased to 1,600 tf (up from 1,400 tf).
• Hot staging with three center engines during separation, increasing payload to LEO by 10%.
• Interstage jettisoned after boostback to reduce descent mass (integrated in V3).
• Overall booster thrust increased from 73.5 MN to 80.8 MN.
• Vacuum-jacketed propellant lines on tanks to reduce boiloff in orbit.
FEATURE UPGRADES
• Hardware for in-orbit refueling, including docking ports and redesigned quick disconnect.
• Redesigned avionics.
• Two raceways added.
• PEZ dispenser for Starlink satellite deployment.
• Additional vents for control during unpowered flight.
• Static wicks on flaps for electricity discharge.
• Cameras in flap hinges and tank walls.
• Enhanced heat shield with sealed tiles for better re-entry protection.
• Upgraded flaps and aft skirt for maneuverability and stress testing.
• Improved engine testing and static fire processes for reliability.
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