#[non_exhaustive]pub struct AftFlow {
pub surface_mach: f64,
pub angle_rad: f64,
pub pressure_ratio: f64,
pub gradient_p0_per_m: f64,
pub loading_per_rad: f64,
pub free_stream_mach: f64,
pub radius_m: f64,
}Expand description
The surface flow the march delivers to a body’s aft end
(ShockExpansionBody::aft_flow): what a corner behind that body (the juncture of a flare,
say) turns.
Fields (Non-exhaustive)§
This struct is marked as non-exhaustive
Struct { .. } syntax; cannot be matched against without a wildcard ..; and struct update syntax will not work.surface_mach: f64The Mach number on the surface at the aft end, from the pressure the last element’s decay has reached there (TN 3527 eq. 8) expanded back through the march’s total pressure.
angle_rad: f64The surface’s angle to the axis there, rad; zero on a cylinder, negative on a boattail.
pressure_ratio: f64p₁/p₀, the surface pressure there over the free stream’s.
gradient_p0_per_m: f64(∂p/∂s)₁, the pressure gradient the last element carries to there, in units of the free
stream’s pressure per m of axial distance, not of distance along the surface
(TN 3527 eq. 10). Positive where the pressure is still climbing.
loading_per_rad: f64Λ₁, the loading the last element carries to there, per radian of angle of attack
(TN 3527 eq. 19): what a corner behind the body carries on through λ₂/λ₁.
free_stream_mach: f64The free-stream Mach number the march was run at, so that a corner behind this flow can be
read without being told it again (flare_reduction_turns_rad).
radius_m: f64The body’s radius there, m: eq. 4’s r at a corner behind it. This is the profile’s
radius at the aft end, so where the tangent body’s last corner is not at the aft end (a
body that ends in a curve, or one whose last tangency point was merged as nearly parallel),
it sits a little off the element’s own corner radius, as Self::angle_rad does. On a
body that ends in a cylinder or a cone, which is every body a flare joins in a flight
today, the two are the same.