pub fn joint_pressure_drag_coefficient(
joint_angle_rad: f64,
) -> Result<f64, AeroError>Expand description
Pressure drag at rest of a nose cone or shoulder, (C_D•)_p,0 = 0.8 sin² φ on its frontal
area (a nose’s base area, or a shoulder’s increase in area), with φ the joint angle between
the surface and the body axis at the aft joint (Niskanen 2009 eq. 3.86, after NAVWEPS 1488
p. 237). A smooth joint (φ = 0) has none; a bare step (φ = π/2) has 0.8.
It holds “only at low subsonic velocities”; eq. 3.87 carries it to the transonic method
(crate::nose_drag).
§Errors
AeroError::Domain for a joint angle outside [0, π/2].