osteomalacia
For my science project, I have chosen to research, test, and show how model rockets work and how high up they go. I am trying to find out what all the inside parts of a rocket engine do, how a rocket works, and how high the A8-3, B6-4, and C6-5 engines go, and what the difference in altitude between them are. I think that each engine will have about a 250 ft. difference between it and the next biggest in size (example, A will be 400ft., B will be 650ft., and C will be 900ft.). After research, I have found out how model rocket engines work. There are three main parts of the engine. First is the “propellant”, the propellant, when ignited, provides the power of the rocket, when the propellant is burned up, the second part comes in, this is called the “delay” the delay, when ignited by the propellant, kind of “kills time” while the rocket uses up the rest of its momentum. The delay also causes a long stream of smoke to come out of the end of the rocket to look like a jet trail. This helps the visibility factor, and makes a very cool effect. When the rocket is “out of momentum”, and the delay has used up its “delay ness”, the last part of the engine comes into play, the “ejection” charge. The ejection charge is powder that ignites and makes the capsule and parachute-or the “recovery system”- pop out of the body tube of the rocket. I have also learned what the letters and numbers (code) mean on the engines. (Example: A8-3, B6-4, C6-5 etc.) The first letter means total impulse power. This means the total amount of power the engine produces. Total impulse is measured in Newton Seconds.