 <translate> Leonardo da Vinci designed what appeared to be a helicopter, but did not fly it. So, the answer is no. <yor> Leonardo da Vinci ṣe ohun kan tó dà bí ọkọ̀ òfuurufú tó ń fò, àmọ́ òun fúnra rẹ̀ kò wakọ̀ ọ́. Nítorí náà, ìdáhùn mi ni pé rárá. 