Struct FinGeometry 

#[non_exhaustive]
pub struct FinGeometry {
    pub span_m: f64,
    pub area_m2: f64,
    pub midchord_sweep_rad: f64,
    pub leading_edge_sweep_rad: f64,
    pub trailing_edge_sweep_rad: f64,
    pub mac_length_m: f64,
    pub mac_leading_edge_m: f64,
    pub mac_span_m: f64,
}

A fin’s aerodynamic geometry.

Fields (Non-exhaustive)

Non-exhaustive structs could have additional fields added in future. Therefore, non-exhaustive structs cannot be constructed in external crates using the traditional Struct { .. } syntax; cannot be matched against without a wildcard ..; and struct update syntax will not work.

span_m: f64

Span from the root (body surface) to the tip, m.

area_m2: f64

Area of one side of one fin, m²; the area in the normal-force slope.

midchord_sweep_rad: f64

Mid-chord sweep Γ_c, rad, positive with the tip aft.

leading_edge_sweep_rad: f64

Leading-edge sweep Γ_L, rad, positive with the tip aft; the span average of the edge’s angle when it is curved or kinked (Niskanen 2009 eq. 3.91).

trailing_edge_sweep_rad: f64

Trailing-edge sweep, rad, positive with the tip aft; the span average of the edge’s angle when it is curved or kinked. Negative for a trailing edge that sweeps forward to the tip.

mac_length_m: f64

Length of the mean aerodynamic chord c̄, m.

mac_leading_edge_m: f64

Leading edge of the mean aerodynamic chord, m aft of the root leading edge.

mac_span_m: f64

Spanwise station of the mean aerodynamic chord, m from the root.

Implementations

impl FinGeometry

pub fn from_planform(planform: &FinPlanform) -> Result<Self, AeroError>

The geometry of a planform (Niskanen 2009 eq. 3.30–3.34; see the module docs).

Errors

The planform’s own validation errors, and AeroError::Domain for a fin without area.

pub fn center_of_pressure_m(&self) -> f64

Center of pressure at the quarter mean aerodynamic chord, m aft of the root leading edge (Niskanen 2009, X_f = x_MAC,LE + 0.25 c̄; Barrowman 1966 eq. 76a for a trapezoid).

pub fn single_fin_slope( &self, reference_area_m2: f64, mach: f64, ) -> Result<f64, AeroError>

Normal-force slope of one fin, per radian of the angle between the flow and the fin (Barrowman 1967 eq. 3-6; Niskanen 2009 eq. 3.40).

Errors

AeroError::Mach outside [0, 1), and AeroError::Domain for a non-positive reference area.

Trait Implementations

impl Clone for FinGeometry

fn clone(&self) -> FinGeometry

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Copy for FinGeometry

impl Debug for FinGeometry

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for FinGeometry

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl PartialEq for FinGeometry

fn eq(&self, other: &FinGeometry) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Serialize for FinGeometry

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for FinGeometry