"The key enabling technology that will make suborbital spaceflight possible for the F-106 is the MIPCC (Mass Injection Pre-Compressor Cooling). This involves spraying water just in front of the J-75 engine's compressor blades as the plane approaches Mach 3. This cools the superheated air in the engine inlet, tricking the engine into thinking it is operating at a lower Mach number. It also increases the density of the flow through the engine, as well as its volume. The result is that the engine produces more thrust the faster it goes. Increased thrust levels of 100%, 200% and 300% are possible, depending on the amount of water being used. This technique also allows the J-75 to operate at much higher altitudes than it was designed for."
