Theoretical determination of the speed and number of revolutions of the grain grinder hammer propellerFakhridin U. Karshiev, Makhmatmurod Kh. Shomirzaev, Shokir Ch. Tursunov and Yigitali J. ShamaevE3S Web of Conf., 390 (2023) 03030DOI: https://doi.org/10.1051/e3sconf/202339003030