CHÍNH. SURVEY RESULTS ON THE VERTICAL LANDING AERODYNAMIC CHARACTERISTICS OF THREE JOINTS HELICOPTER ROTOR AND DETERMINES THE VORTEX RING STATE. Journal of Military Science and Technology, [S. l.], n. 72, p. 3–9, 2021. Disponível em: https://online.jmst.info/index.php/jmst/article/view/73. Acesso em: 22 nov. 2024.