Engineers at NASA found out in the test video above, when they assembled these 3D-printed rocket engine injectors, and put them up against a temperature of over 6,000º F and 20,000 pounds of thrust.
If you're trying to turn a propane nozzle into an actual rocket engine, chances are you are going to run into more than a few problems. If you're trying to use it as a practical effect, on the other hand, to make something that looks like a convincing rocket thruster, you're barking up the right tree.
That's a picture of XCOR Aerospace's new liquid methane and liquid oxygen powered engine, a prototype of what could be launching future rockets to the Moon and Mars. The private space firm created the engine, which is about 20% more efficient than traditional hypergol engines that power trips today, with funding from…