Mfundo Yofunika: Ndiwophatikiza zochitika mwachindunji ndi mfundo yoyendetsa ndege, ngati palibe kusiyana pakati pa kolowera ndi kutulutsa, mphamvu yamagetsi yotsekedwa, valavu imatsegulidwa.
Pamene cholowa ndi chiletso choyambitsa kusiyana, pambuyo pa mphamvu, mphamvu yamagetsi yopukutira ya valavu yayikulu imakwera, kuti igwiritse ntchito kusiyana kwamiyala, kuti mugwiritse ntchito kusintha kwa valavu yayikulu m'mwamba; Mphamvu ikayamba, valavu yoyendetsa ndege imagwiritsa ntchito mphamvu ya kasupe kapena sing'anga kuti ikanthe gawo lotseka, limasunthika, kuti valavu yatsekedwa.
