Not long ago, most rockets relied on RP-1, also known as kerosene, for their first stages. Now, methane has taken center stage in rocket fuel discussions. So, what changed? In a recent video, Eager Space dives into this shift.
At first glance, the differences between kerosene-oxygen (kerolox) and methane-oxygen (metholox) seem minor. Their performance metrics are similar. However, a combination of small advantages makes methane a more appealing choice for modern rockets.
One significant benefit of methane is that it turns to gas when it warms up. Rocket engines are typically hot. This trait means injectors don’t have to deal with thick liquids, making it easier to mix fuel and oxidizer. Eager Space even describes RP-1 as a “soup,” while methane’s straightforward combustion process simplifies engine simulations.
Additionally, methane’s temperature is closer to that of liquid oxygen (LOX), which helps with efficiency. Surprisingly, it’s also less expensive than RP-1, making it a cost-effective option for manufacturers. According to a study by the International Rocketry Association, nearly 30% of new rocket designs now incorporate methane, indicating a significant trend in the industry.
Rockets powered by methane are not just a theory. In fact, SpaceX’s Raptor engines are leading the way in this revolution. They showcase how effective methalox can be, pushing the boundaries of space technology.
As we explore the world of rocketry, it’s fascinating to see how these fuel choices evolve. Whether you’re a hobbyist or a professional, there’s always something new happening in this field. Got a rocket project in the works? We’d love to hear about it!