Struct Nozzle 

pub struct Nozzle {
    pub exit_radius_m: f64,
    pub throat_radius_m: Option<f64>,
    pub reference_pressure_pa: Option<f64>,
}

A nozzle, for the ambient-pressure correction of thrust.

Fields

exit_radius_m: f64

Exit radius, m.

throat_radius_m: Option<f64>

Throat radius, m, when known (informational: the thrust curve already carries its effect).

reference_pressure_pa: Option<f64>

The ambient pressure the thrust curve was measured at, Pa: the static test site’s. The thrust is then corrected to the ambient pressure in flight.

None flies the curve as it is at every ambient pressure, with no correction. That is RocketPy’s default (Motor(reference_pressure=None), whose pressure_thrust is then zero, motor.py:1188-1189), so a RocketPy input transcribed into hpr says None.

Which to give: motor files don’t record where the curve was measured. For a motor tested near sea level, STANDARD_SEA_LEVEL_PRESSURE_PA adds the thrust a higher site gains (16 kPa × A_e at 1,400 m); None leaves it out. A design must say which: the field is required, as null for None, so leaving it out is an error rather than a silent choice. Motors read from .eng or .rse files, or from the catalog, carry no nozzle and so no correction.

Implementations

impl Nozzle

pub fn exit_area_m2(&self) -> f64

The exit area A_e = π r_e², m².

Trait Implementations

impl Clone for Nozzle

fn clone(&self) -> Nozzle

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for Nozzle

impl Debug for Nozzle

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for Nozzle

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl JsonSchema for Nozzle

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 Nozzle

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

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 Nozzle