INTERCEPT PROCEDURES TEXTBOOK
Calculating Aspect Angle
Target aspect and aspect angle are two ways to view similar relationships. Aspect angle is how
the bogey sees the fighter measured to the tail of the bogey.
AA = 180° - (180° - HCA - AO)
= 180° - TA
While Navy and Marine Corps weapons systems use target aspect, the Air Force uses aspect
angle. At VT-86, aircrew will use target aspect to control intercepts.
Once aircrew establish the bogey and fighter positions on their respective flight paths, a
triangle is formed by the flight paths and the bearing line between aircraft.