This engine below is something we make with college engineering students in their propulsion lab. They make small Pulse Jet Engine using a small metal container with a tight-fitting plastic lid. Inside the can, we drop the propellant and submerge the can in an ice bath to help keep the propellant in liquid form (which also makes the engine burn longer). These types of engines are very simple, as they have no moving parts, and they totally sound like a huge farting party. They’ve been used on scram jet engines and other types of supersonic craft. Here’s a video of a working pulse jet engine:
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Note: Please don’t try to make one of these pulse jets! There are videos that will show you how, and not one of them I’ve found is safe to do without a supervising instructor… in fact, they are highly dangerous because of the types of containers and fuels people have chosen to try. The container must be able to withstand high thermal differentials and pressure changes, and the propellant chosen must not burn too hot or you’ll explode the container.
A rocket has a few parts different from an airplane. One of the main differences is the absence of wings. Rockets utilize fins, which help steer the rocket, while airplanes use wings to generate lift. Rocket fins are more like the rudder of an airplane than the wings.
A fighter plane is like a cross between a rocket and an airplane, because of the high amount of thrust generated by the engines. This video below is a real model of a F-14 tomcat using two small turbine jet engines – it’s one of my favorite videos!
This is a real working space shuttle model… can you figure out how it works? How does it fly?