There are many ways to build a Level 3 rocket. Some people like to build rockets that get the most out of every newton, reaching for high altitude or fast speeds. Others like to build very large rockets. The rocket we’ll look at in this chapter (Figure 13-1) is a bit of a compromise. It’s a fairly standard design, but it’s packed into a roomy 4”-diameter fiberglass airframe so you have plenty of room to work. It will stay below 15,000 feet on an AeroTech M1297W, but it will also do about Mach 1.5.