Watch the WS15 turbofan engine model come together piece by piece. Explore the details behind this impressive J20 fighter jet ...

Rim-driven thrusters turn the normal propeller-motor arrangement inside out; rather than mounting the motor at the center of the propeller, they use a large hollow motor, with the blades attached to ...

Everybody knows about Lego sets, but not everyone can afford them. Thankfully, there are other brands that also produce high-quality building sets. For instance, this Mould King model engine kit is ...