Answer
Nka soko yumuraba ifunitse kuva muburebure bwayo bwubusa kugeza murwego rwo hejuru, imiraba irasibangana, bigatuma kwiyongera kwa diameter yo hanze ($ O.D. $). Uku kwaguka kwinshi $ \ Delta D $ birashobora kugereranywa na formula $ \ Delta D = 0.02 \ cdot \ frac {(W_f - W_h) \ cdot N ^ 2} {D_m} $, aho $ W_f $ ari uburebure bwubusa naho $ W_h $ nuburebure bwakazi. Niba amasoko ashyizwe mu mwobo ufite ibihagije bidahagije, bizahambira ku rukuta, bitera igicucu kidafite umurongo ku gipimo cy’imvura no kwambara. Abashushanya bagomba kwemeza ko $ Bore_ {min}> O.D ._ {max} + \ Delta D $. Mubushyuhe bwo hejuru cyane ukoresheje $ 17-7PH $ ibyuma bitagira umwanda, coefficente yo kwagura amashyanyarazi $ \ alpha $ nayo igomba kongerwaho kubara kwaguka rya radiyo kugirango hirindwe ingaruka ziterwa nubushyuhe bwo gukora $ T_ {op} $.
