Elon Musk just Reveals Starship Raptor 4 with Unbelievable Power to Beat Blue Origin’s New Engine!

Stronger and stronger, the race for rocket engine performance is heating up, with Raptor 3 potentially falling short of expectations Blue Origin's newest engine could emerge as a serious challenger. But Elon Musk is already looking ahead to something even more powerful, Raptor 4. Just how much thrust could it deliver? And is that target achievable? Let's find out on today's episode of Great Space. Let me ask you something. Do you think SpaceX's Raptor engine could ever reach 500 tons of thrust? Well, Musk has just suggested exactly that. In a recent post on X he wrote, It is so tempting to make a 500-ton thrust Raptor IV in place of the 250-ton Raptor III for the outer ring of the Starship booster. 500 tons of thrust. That's approximately 1.1 million pounds of force from a single engine. Just imagine what that could mean for Starship. But before we explore the implications, we need to understand why SpaceX might be considering such an enormous leap in performance. Let's start with the competition. Raptor 1 originally produced around 185 tons of thrust, while Raptor 2 increased that figure to approximately 230 tons. Meanwhile, Blue Origin introduced its own methane and liquid oxygen engine, the BE-4, capable of producing around 250 tons of thrust. Then came Raptor 3. With a radically simplified design, reduced mass, and a target thrust of up to 280 tons, SpaceX appeared to be taking another major step forward, but there is an important distinction between an engine's design target and what it can reliably deliver. Musk recently acknowledged we can only reliably get to around 230 tons of force with Raptor 3. That admission changes the comparison considerably. Despite its higher design target, Raptor 3's reliably achievable thrust remains around Around the same level as Raptor 2. And that puts it below the BE-4's advertised thrust of approximately 250 tons. But Blue Origin isn't standing still. The company has discussed upgrading the BE-4 from 250 tons toward a target of approximately 290 tons, or around 640,000 pounds of thrust. Naturally, SpaceX has ambitions of its own. At the end of October, Musk stated that Raptor 4 could reach 300 tons of sea-level thrust While maintaining approximately the same 1,600 kilogram mass as Raptor 3. That would represent a substantial improvement in thrust to weight ratio. But then Blue Origin introduced another development. A new engine called Northstar. Potentially intended for a future three-stage version of New Glenn. According to the announcement, Northstar is designed to produce approximately 324 tons of thrust or 715,000 pounds. Blue Origin is emphasizing not only performance but also reduced weight, lower manufacturing costs, and greater production efficiency, with additive manufacturing playing an important role in its development. That puts Northstar's announced thrust target above the figures currently associated with Raptor 3 and even Musk's stated target for Raptor 4. And this is where the competition gets interesting. Because Musk's latest 500-ton proposal could take Raptor into an entirely different performance category. But can SpaceX actually make it happen? Let me know what you think in the comments. If SpaceX achieves this target, Raptor 4 could become one of the most powerful rocket engines ever developed. At 500 tons per engine, it would produce nearly twice the thrust of Raptor 3's 280-ton design target and more than twice the approximately 230 tons Musk says the current version can reliably deliver. The implications become even more impressive when we look at the entire Super Heavy booster. Musk specifically mentioned using these engines on the outer ring. That ring contains 20 engines. At 500 tons of thrust apiece, those 20 Raptors alone would generate approximately 10,000 tons of thrust. Now, let's assume the remaining 10 engines across the middle and inner rings retain a thrust level of approximately 230 tons each. That would contribute another 2,300 tons. Combined, the booster would produce approximately 12,300 tons of thrust at liftoff. And that's before accounting for any further improvements to the remaining engines. Of course, these figures are hypothetical. SpaceX has not announced a finalized configuration or confirmed that a 500-ton Raptor 4 will actually be developed. But even as a theoretical exercise, the numbers are extraordinary. Now let's compare this with one of the most powerful rocket engines ever built, NASA's F1. Each F1 engine produced approximately 690 metric tons of sea level at thrust, so even at 500 tons, an individual Raptor 4 would still fall short of the F1. However, there's an important distinction between comparing individual engines and comparing entire launch vehicles. The F1 was an enormous engine designed for the Saturn V. Raptor, on the other hand, follows a very different design philosophy. Its comparatively compact architecture allows SpaceX to install dozens of engines on a single booster. And that's a major advantage. Rather than relying on a handful of enormous engines, Starship can distribute its propulsion across a much larger engine cluster. So why does Starship need so much power? The answer comes down to what SpaceX ultimately hopes to achieve. Starship V4 and future generations are expected to push the limits of vehicle size, payload capacity, and operational performance. Greater engine thrust could help support those ambitions, particularly as SpaceX works toward more capable tanker vehicles and expands Starship's role in deep space transportation. Orbital refueling, lunar missions, and eventually journeys to Mars will all demand enormous amounts of propellant and payload capacity. SpaceX has discussed the possibility of future Starship configurations delivering more than 200 metric tons to low earth orbit. And that's why Raptor 4 matters so much. But how could SpaceX actually build an engine capable of producing 500 tons of thrust? To understand the challenge, we first need to look at how Raptor works. Raptor uses a full flow-staged combustion cycle, burning liquid methane and liquid oxygen. This is an extremely sophisticated propulsion architecture in which both propellants pass through separate pre-burners before entering the main combustion chamber. Across successive generations, SpaceX has worked to increase thrust while reducing engine mass and simplifying the overall design. Raptor 3 represents a major step in that process, but doubling its thrust would require far Far more than a few minor modifications. There are several possible engineering approaches. One would be to increase the overall size of the engine. A larger combustion chamber, throat, and nozzle could accommodate greater propellant flow. For example, if operating pressure remained roughly constant, doubling the relevant flow area would require an increase in diameter of approximately 40%. However, scaling an engine isn't as simple as making every component bigger. The turbopumps, which supply enormous quantities of propellant to the combustion system, would also need to be redesigned. These machines already operate under extreme mechanical and thermal conditions. Increasing their capacity would demand stronger components, improved materials, and careful control of vibration and operating speeds. Another possibility would be to increase combustion chamber pressure, but that approach comes with its own difficulties. Raptor already operates under extraordinarily demanding temperatures and pressures. Pushing those conditions further would place even greater stress on the combustion chamber, injector system, pre-burners, and cooling channels. SpaceX would need to advance its alloys, manufacturing precision, and regenerative cooling technology to prevent critical components from overheating or failing. The injector system and propellant pathways would also require careful redesign. Even small variations in propellant distribution can affect combustion stability, making it essential to maintain consistent operating conditions throughout the engine. There may also be an advantage to the specific configuration Musk described. The outer ring engines on Super Heavy are generally fixed in position, unlike the central engines that provide much of the vehicle's steering and landing capability. That could give SpaceX more freedom to optimize the outer engines for maximum liftoff thrust without having to accommodate all the requirements of a gimbling engine. But the changes won't stop at the engine itself. The booster's propellant distribution systems, plumbing, mounting structures, and load-bearing components would all need to withstand the additional forces. In other words, a 500-ton Raptor wouldn't simply be an upgraded engine, It could require significant changes throughout the entire propulsion and launch system. And even if SpaceX can solve those engineering problems, another question remains. Can it build an engine this powerful while keeping it reliable enough for rapid reuse? Raptor 3 has already demonstrated substantial improvements in simplification, weight reduction, and thrust-to-weight ratio. But several major challenges remain. There's the gap between theoretical and reliable performance. Musk has acknowledged that Raptor 3 currently achieves around 230 tons of thrust reliably, despite its higher design target. Pushing Raptor 4 to 300 tons, let alone 500, will require significantly greater operating margins. Then there is ignition reliability, precise coordination of propellant flows, temperatures, and ignition systems is essential. Then there's ignition reliability. Precise coordination of propellant flows, temperatures, and ignition systems is essential, and even minor inconsistencies can trigger startup failures or unexpected shutdowns. Thermal management presents another challenge. Higher thrust means greater demands on cooling channels, materials, and manufacturing tolerances. SpaceX must also maintain consistent quality as it scales additive manufacturing from individual engines to large production volumes. Finally, there's maintainability. Raptor 3's simplified integrated design reduces components and potential leak points, but welded assemblies can make certain repairs more difficult and time consuming. And that's a critical concern for Starship. Rapid reusability depends not only on recovering the vehicle, but also on inspecting, repairing, and preparing it for another flight as quickly as possible. Ultimately, Raptor 4 must strike the right balance between thrust, reliability, manufacturing efficiency, and maintainability. What we're witnessing is a competition to push the limits of rocket engine performance. SpaceX is working toward a more powerful Raptor. Blue Origin is developing its own next-generation propulsion technology, including Northstar. And both companies are pursuing different approaches to improving thrust. If Musk's 500-ton concept ever becomes reality, it could dramatically increase Starship's total liftoff thrust and help support even more ambitious versions of the vehicle. But enormous power comes with enormous engineering challenges. The materials must withstand higher loads, the cooling systems must handle greater heat, the turbopumps must deliver more propellant, and the engines must remain reliable enough to support the rapid turnaround that makes Starship's reusability strategy possible. So can SpaceX turn this ambitious idea into reality, or will the engineering challenges prove too great? At least for now. We don't have the answer yet, but one thing is certain. The race to build the next generation of rocket engines is far from over. And with that, thank you for tuning in to today's episode. I'm Kevin, and I'll see you in the next one. Until then, keep looking up.