Struct BatesGrains 

pub struct BatesGrains {
    pub count: u32,
    pub density_kg_m3: f64,
    pub outer_radius_m: f64,
    pub initial_inner_radius_m: f64,
    pub initial_height_m: f64,
    pub separation_m: f64,
    pub center_m: f64,
    pub inhibited_ends: bool,
}

A stack of identical BATES grains.

Fields

count: u32

Number of grains N, at least 1.

density_kg_m3: f64

Propellant density ρ, kg/m³.

outer_radius_m: f64

Grain outer radius R, m.

initial_inner_radius_m: f64

Initial bore radius r₀, m, positive.

initial_height_m: f64

Initial grain height (length) h₀, m.

separation_m: f64

Gap between adjacent grains s, m.

center_m: f64

Center of the grain stack along the motor axis, m from the nozzle exit.

inhibited_ends: bool

Whether the grain ends are inhibited, so only the bores burn (RocketPy’s only_radial_burn).

Implementations

impl BatesGrains

pub fn validate(&self) -> Result<(), MotorError>

Checks the geometry.

Errors

MotorError::Domain for a value that is not finite or out of range (including no bore), and MotorError::Inconsistent for no grains, a bore at least as wide as the grain, or a propellant mass that isn’t a positive finite number (geometry so small or dense that it underflows or overflows).

pub fn initial_mass_kg(&self) -> f64

The total propellant mass before ignition, N ρ π (R² − r₀²) h₀, kg.

pub fn web_m(&self) -> f64

The largest web the grains can burn, m: where the bore reaches the outer radius or, with burning ends, the height reaches zero.

pub fn shape(&self, mass_kg: f64) -> GrainShape

One grain’s shape when mass_kg of propellant is left in the stack. Masses at or above the initial mass give the initial shape, and masses at or below zero the burned-out shape.

pub fn mass_element(&self, mass_kg: f64) -> MassElement

The grains, with mass_kg of propellant left, as one mass element about the stack center.

Trait Implementations

impl Clone for BatesGrains

fn clone(&self) -> BatesGrains

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for BatesGrains

impl Debug for BatesGrains

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for BatesGrains

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl JsonSchema for BatesGrains

fn schema_name() -> Cow<'static, str>

The name of the generated JSON Schema.

fn schema_id() -> Cow<'static, str>

Returns a string that uniquely identifies the schema produced by this type.

fn json_schema(generator: &mut SchemaGenerator) -> Schema

Generates a JSON Schema for this type.

fn inline_schema() -> bool

Whether JSON Schemas generated for this type should be included directly in parent schemas, rather than being re-used where possible using the $ref keyword.

impl PartialEq for BatesGrains

fn eq(&self, other: &BatesGrains) -> 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 BatesGrains

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 BatesGrains