We just learned about the De Laval Nozzle.
Another part of rocket history is the La Prieur Rocket.
During World War I, a French scientist came up with the idea to shoot rockets from an airplane.
He made some rockets that were a lot like the old Fire Arrows, just a tube filled with gunpowder strapped to a stick.
Usually they would only go straight for a little over 100 yards.
People were worried that this would start the airplane on fire, so he tested it by strapping an airplane to a car and driving around, and shooting the arrows from the airplane on top of the car.
It worked, so they started putting them on airplanes in 1916.
The rockets were launched when the airplane pilot pressed an electronic ignition switch in the plane, and then the rockets would shoot off one by one.
They were mostly used to shoot down balloons that the enemy was using to spy on them.
(from: wikipedia - le prieur rocket)
Kid Facts - Blast from the past: Tsunami Earthquake
