In terminal ballistics, the yaw angle of a bullet significantly influences the size of the temporary cavity and the severity of the wound track. At what angle of yaw relative to the flight path does the bullet present its maximum cross-section to the tissues, resulting in the largest temporary cavity?
- A 0 degrees
- B 45 degrees
- C 90 degrees ✓
- D 180 degrees
Correct answer: C. 90 degrees
Explanation
Yaw is the angle between the bullet's long axis and its flight path. At 0 degrees, the bullet is flying point-first, creating a small permanent cavity. As yaw increases, the bullet presents a larger cross-section to the tissue. Maximum energy transfer and temporary cavity formation occur at 90 degrees yaw. At 180 degrees, the bullet is flying base-first, which is a form of tumbling.
Reference: Spitz and Diaz, Medicolegal Investigation of Death, 5th ed.
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Written and medically reviewed by the StethoPrep medical team.