pub fn prandtl_meyer_angle(mach: f64) -> Result<f64, AeroError>Expand description
The Prandtl–Meyer function ν(M) = √((γ + 1)/(γ − 1)) atan √((γ − 1)(M² − 1)/(γ + 1)) − atan √(M² − 1), rad: the angle through which a flow at Mach 1 turns, expanding, to reach M
(NACA Report 1135, 1953, eq. 171c, p. 626).
§Errors
AeroError::Domain below Mach 1 or for a non-finite Mach number.