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Intro Sep 16th

A rocket is a vehicle that uses jet propulsion to accelerate without using any surrounding air - wikipedia

Newtons third law some thrust

Types of propulsion

Liquid Engine

  • very complex
  • Lots of tubing
  • pumps, pressure regulation, etc

Solid Engine

  • Very simple
  • We will focus on this one
  • Cyclinder with a hole in the center, thse 4 things are called grains, and are basically what burns
  • the design of the nozzle and spacing, all are made to control the explosion.
  • You'll have an igniter, which will go all the way to the igniter
  • reations starts from the top, so you gotta make sure the reaction is happening through the casing, all the way through
  • as the grain is burned through, the internal radius increases, so the surface area increases, increasing the pressure on the casing
  • any solid motors are purchased, so not as difficult to acquire
  • yeah its, they never leave the atmosphere, 90% will be in the lower atmosphere
  • it will becaome more about the rambleing of legal stuff.
  • 2 orgs are created in the us will rent out fields or have permit from FAA for the airspace.
    • TRIPOLI (Rocketry association)
    • NAR (national association of rocketry)
    • FAR (Friends of Amateur Rocketry)
      • this is the one that STAR launches with
      • lets you do the most things (lets you fly liquid engines)

Two types of rockets

  • Model (A-G)
  • High Power (H-O)
  • Letter determines the total thrust of the rockets
  • Different letters to characterize them
  • H motors are tiny, O motors are huge, each letter doubles total thrust

High Power Rockets

  • Three categories
    • L1 (H-I)
    • L2 (J-K-L)
    • L3 (M-N-O)
  • depends on the type of problem that you do
  • this system of counting was implemented by Tripoli and NAR
  • to be able to fly L1 rockets, you need L1 Certification
  • and so on
  • need mentors 2 or more to walk you through to make sure you know what your doing, so you can upload your L3 cert

Software

Required - Discord - Openrocket

Optional - Rocketpy - rasaero - solidworks/f360

Extra - Ansys

How OpenRocket works

  • Follow instructions onscreen