The High Speed Anti-radiation Demonstrator is a follow-on replacement for the HARM missile and is planned for carriage on the F/A-18C aircraft. A wind tunnel test was conducted to generate the data necessary to clear HSAD for a launch from the F/A-18C parent aircraft at a Mach number of 0.8 and a pressure altitude of 30,000 feet. It was subsequently decided that the first HSAD launch would occur from the QF-4 aircraft. Due to cost and time limitations, it was not possible to conduct a wind tunnel test for the HSAD missile in the QF-4 flowfield. CFD tools were used to generate the QF-4 flowfield data necessary to conduct HSAD trajectory simulations.