The relationship between thrust and RPM cannot be directly calculated without additional parameters. The formula provided, T = ct * 0.5 * ρ * v² * S, indicates that thrust (T) depends on the coefficient of thrust (ct), air density (ρ), velocity (v), and rotor blade area (S). To calculate thrust with fixed angle of attack and rotor blade area, one must know the specific values for these variables. The discussion emphasizes the importance of understanding these parameters to derive accurate thrust calculations. Accurate calculations require a comprehensive understanding of the involved factors beyond just RPM.