ELI5: Explain Like I'm 5

Walter HWK 109-507

Okay, so imagine you want to make a really fast car, but instead of using gas, you want to use something else to power it. That's where the Walter HWK 109-507 comes in.

The Walter HWK 109-507 is actually an engine that's used in airplanes. It's a special kind of engine called a "rocket engine" which means that it uses really hot gases shooting out of the back to propel the airplane forward really fast.

Here's how it works: the engine has a special container called a combustion chamber that's filled with a mixture of fuel and oxygen. The fuel is usually a liquid called "hydrazine" which is really, really flammable. When you combine that with the oxygen and set it on fire, it creates a bunch of really hot gases, which shoot out of the back of the engine like a giant flame.

Now, here's where things get a little confusing: normally in an engine, you need something called "air" to burn fuel. But in a rocket engine like the Walter HWK 109-507, there's no air up in the sky where airplanes fly, so the engine has to bring its own oxygen with it.

To do this, the Walter HWK 109-507 has special tanks filled with something called "liquid oxygen." This liquid oxygen is really cold, about -297 degrees Fahrenheit, and extremely flammable. When the engine needs oxygen to burn the hydrazine fuel, it pumps this liquid oxygen into the combustion chamber, where it explodes with the hydrazine to create the hot gases that shoot out the back of the engine.

It's kind of like lighting a giant bottle rocket, but instead of shooting it into the sky, you're using all that flame to power an airplane. The Walter HWK 109-507 is especially powerful, which makes it ideal for certain types of airplanes that need to go really fast, like fighter jets or high-speed aircraft.