Struct Drag 

pub struct Drag {
    pub density: AtmDensity,
    pub frame: Frame,
    pub estimate: bool,
}

Drag implements all three drag models.

Fields

density: AtmDensity

Density computation method

frame: Frame

Frame to compute the drag in

estimate: bool

Set to true to estimate the coefficient of drag

Implementations

impl Drag

pub fn earth_exp(almanac: &Almanac) -> Result<Arc<Self>, DynamicsError>

Constructs a standard exponential drag model for Earth orbiters.

Configured with nominal LEO reference parameters at $h_0 = 700\text{ km}$:

• $\rho_0 = 3.614 \times 10^{-13}\text{ kg/m}^3$
• $H = 88.667\text{ km}$ ($88,667\text{ m}$)

pub fn std_atm1976(almanac: &Almanac) -> Result<Arc<Self>, DynamicsError>

Constructs a U.S. Standard Atmosphere 1976 drag model for Earth orbiters.

Valid for altitudes up to $1,000\text{ km}$ ($1,000,000\text{ m}$). Suitable for general trajectory analysis where space weather data ($F_{10.7}$, $A_p$) is unavailable.

Trait Implementations

impl Clone for Drag

fn clone(&self) -> Drag

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Drag

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

Formats the value using the given formatter.

impl DerefToPyAny for Drag

impl<'de> Deserialize<'de> for Drag

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Display for Drag

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

Formats the value using the given formatter.

impl ForceModel for Drag

fn gradient( &self, ctx: &Spacecraft, almanac: &Almanac, ) -> Result<(Vector3<f64>, Matrix4x3<f64>), DynamicsError>

This model uses central differencing for gradient computation instead of hyperdual numbers. This is required given the complexity of the NRLMSISE00 model.

fn estimation_index(&self) -> Option<usize>

Returns the state-vector index of an estimable parameter associated with this model, if configured.

fn eom( &self, ctx: &Spacecraft, almanac: &Almanac, ) -> Result<Vector3<f64>, DynamicsError>

Evaluates the force vector $\mathbf{F}$ at the provided state and epoch. Must be in kg*km/s^2 (or kN).

impl<'a, 'py> FromPyObject<'a, 'py> for Drag

where Self: Clone,

type Error = PyClassGuardError<'a, 'py>

The type returned in the event of a conversion error.

fn extract( obj: Borrowed<'a, 'py, PyAny>, ) -> Result<Self, <Self as FromPyObject<'a, 'py>>::Error>

Extracts Self from the bound smart pointer obj.

impl<'py> IntoPyObject<'py> for Drag

type Target = Drag

The Python output type

type Output = Bound<'py, <Drag as IntoPyObject<'py>>::Target>

The smart pointer type to use.

type Error = PyErr

The type returned in the event of a conversion error.

fn into_pyobject( self, py: Python<'py>, ) -> Result<<Self as IntoPyObject<'_>>::Output, <Self as IntoPyObject<'_>>::Error>

Performs the conversion.

impl PyClass for Drag

const NAME: &str = "Drag"

Name of the class.

type Frozen = False

Whether the pyclass is frozen.

impl PyClassImpl for Drag

const MODULE: Option<&str> = ::core::option::Option::None

Module which the class will be associated with.

const IS_BASETYPE: bool = false

#[pyclass(subclass)]

const IS_SUBCLASS: bool = false

#[pyclass(extends=…)]

const IS_MAPPING: bool = false

#[pyclass(mapping)]

const IS_SEQUENCE: bool = false

#[pyclass(sequence)]

const IS_IMMUTABLE_TYPE: bool = false

#[pyclass(immutable_type)]

const RAW_DOC: &'static CStr = /// `Drag` implements all three drag models.

Docstring for the class provided on the struct or enum.

const DOC: &'static CStr

Fully rendered class doc, including the text_signature if a constructor is defined.

type Layout = <<Drag as PyClassImpl>::BaseNativeType as PyClassBaseType>::Layout<Drag>

Description of how this class is laid out in memory

type BaseType = PyAny

Base class

type ThreadChecker = NoopThreadChecker

This handles following two situations:

type Inventory = Pyo3MethodsInventoryForDrag

type PyClassMutability = <<PyAny as PyClassBaseType>::PyClassMutability as PyClassMutability>::MutableChild

Immutable or mutable

type Dict = PyClassDummySlot

Specify this class has #[pyclass(dict)] or not.

type WeakRef = PyClassDummySlot

Specify this class has #[pyclass(weakref)] or not.

type BaseNativeType = PyAny

The closest native ancestor. This is PyAny by default, and when you declare #[pyclass(extends=PyDict)], it’s PyDict.

fn items_iter() -> PyClassItemsIter

fn lazy_type_object() -> &'static LazyTypeObject<Self>

fn dict_offset() -> Option<PyObjectOffset>

Used to provide the dictoffset slot (equivalent to tp_dictoffset)

fn weaklist_offset() -> Option<PyObjectOffset>

Used to provide the weaklistoffset slot (equivalent to tp_weaklistoffset

impl PyClassNewTextSignature for Drag

const TEXT_SIGNATURE: &'static str = "(density, frame, estimate=True)"

impl PyTypeInfo for Drag

const NAME: &str = <Self as ::pyo3::PyClass>::NAME

👎Deprecated since 0.28.0:

prefer using ::type_object(py).name() to get the correct runtime value

Class name.

const MODULE: Option<&str> = <Self as ::pyo3::impl_::pyclass::PyClassImpl>::MODULE

👎Deprecated since 0.28.0:

prefer using ::type_object(py).module() to get the correct runtime value

Module name, if any.

fn type_object_raw(py: Python<'_>) -> *mut PyTypeObject

Returns the PyTypeObject instance for this type.

fn type_object(py: Python<'_>) -> Bound<'_, PyType>

Returns the safe abstraction over the type object.

fn is_type_of(object: &Bound<'_, PyAny>) -> bool

Checks if object is an instance of this type or a subclass of this type.

fn is_exact_type_of(object: &Bound<'_, PyAny>) -> bool

Checks if object is an instance of this type.

impl Serialize for Drag

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

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StaticType for Drag

where AtmDensity: StaticType, Frame: StaticType, bool: StaticType,

fn static_type() -> SimpleType

Return the Dhall type that represents this type.