Project Timberwind is a plan to design and build a type of airplane engine that can use a lot less fuel than traditional engines.
Think of an airplane like a bird that needs to flap its wings to fly. The engine of the airplane is like the bird's muscles that make it flap its wings. The current engines in most airplanes use a lot of fuel to make the plane fly.
Project Timberwind wants to make a new type of engine that can fly the airplane without using as much fuel. They will do this by making tiny pieces of metal, called pellets, that will burn very fast inside the engine. This fast burning will make a lot of heat and energy, which will power the engine and make the airplane go.
But making an engine like this is not easy. It will take a lot of smart people working together to design and build a safe and reliable engine. Once they make the engine, they will test it to make sure it works well, and then they will put it on an airplane to see how it flies.
If they succeed, airplanes could use a lot less fuel, which would be good for the environment, and it would also save airlines a lot of money on fuel costs.