A simple graphical solution for rocket wake boundaries

Assuming a simple conical ‘aerodynamic’ wake extending downstream from any point on the surface of a sounding rocket of typical configuration, equations are given to calculate whether a boom-mounted probe is within the wake, for varying wake angles. The calculation is straightforward for wake angles 0° and 90°. For the general case, as an alternative to solving quartic equations, a simple graphical method of solution is provided, affording quick solutions in generalized coordinates applicable to a wide range of rocket and boom configurations.