Saturday, June 21, 2025

Multi Purposing Space and Military Rockets

The world is heating up. The importance of air defense and ballistic missiles are increasing rapidly. Once the disputes start the inventories dry up quickly. The one that can replenish its inventory faster would have a major advantage over its enemy. Ballistic missiles and space rockets have many common points. My proposition is to develop the largest possible 3d printed liquid rocket engine and mass produce it using 3d printers on demand. Low engine count versions would be utilized as missiles. Large engine count versions would be used on space rockets. Super Heavy has 33 Raptor engines. A Falcon 9 equivalent rocket may be build from 33 small engines as well.

I propose the use of liquid natural gas and liquid oxygen for the rocket and missile propellent. The missiles can be filled with propellent close to the launch site. Many countries have extensive natural gas pipeline network that has storage reserves on various locations. Additionally, natural gas can be synthesized from coal if needed. Therefore, natural gas has less criticality compared to RP1 or similar rocket fuel for oil importing countries.

Unlike solid fuel missiles, the liquid propulsion rockets cannot be stored in ready format. However, they can be manufactured and stored unfueled. They would be fueled on demand using mobile gas liquefier stations distributed around the country. Liquid rockets have the advantage of longer flying time and therefore can deceive the enemy defense system compared fix flight trajectory rockets. They can be designed in multiple stages to extend their range as well.

Space and military expenditures can easily bankrupt an economy. Therefore, multi purposing is very important. Design a rocket engine and architecture. Then, scale it to span your needs from military to space. Reliable mass production capability would allow the country to frequently launch rockets to space in peace time and manufacture missiles during disputes.

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