Using airflow is distinguished from touching the target with the aircraft's wingtip. The technique developed toward the use of airflow, although some early attempts are described as involving more direct contact. This qualifies the earlier discussion of wing stresses.
Notable Point · 2:10:14-2:10:29
Airflow in the V-1 wing-tipping follow-up
A brief clarification distinguishes airflow from direct wingtip contact.